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Thermal pollution reduces water quality through any process that leads to a change in the water’s ambient temperature. Karun is one of the most relevant sources of water supply in Iran, and its pollution, created by industrial, urban, and agricultural issues, has been one of the most critical challenges throughout the last few years. As the water temperature rises, the amount of dissolved oxygen in it decreases, thereby affecting the entire ecosystem associated with it. Drainage of urban and industrial runoff into surface water sources can increase the water temperature. Dams also constitute a significant part, modifying spatial patterns of temperature along river routes and causing thermal contamination. In this paper, the thermal pollution of the Karun River was assessed, and regions along this river with unusually raised water temperatures were identified and compared over 20 years. By analyzing the results, it can be found that the thermal pollution from dams has a significant impact on the downstream river environment and ecology that is considerably relevant during summer periods, showing average decreases of 3 degrees Celsius immediately beyond the dams’ locations (from 41 degrees Celsius upstream dams to 38 degrees Celsius beyond them) or even bigger (reductions of 13 degrees Celsius in one of the studied dams). Hence, our results showed that water temperature is colder downstream in the hot seasons of the year than upstream of the dams. The results suggest that the usage of remote sensing data effectively could complement collected data from ground-based sensors to estimate water temperature and to identify pollution areas. It provides experts with spatially extensive and highly synchronized data.

In the ever-evolving landscape of job markets and career opportunities, the importance of a successful interview cannot be overstated. Whether you are a seasoned professional seeking a new challenge, a recent graduate embarking on your career journey, or someone re-entering the workforce, the interview process remains a pivotal step toward securing your desired position. With competition at an all-time high, how can you ensure that you stand out from the crowd and leave a lasting impression on your potential employer? Welcome to "The Ultimate Countdown: Your 30-Day, 30-Hour, and 30-Minute Guide to Interview Success." This book is designed to be your comprehensive companion, offering a structured and strategic approach to interview preparation. Through this carefully crafted guide, you will embark on a journey that breaks down the daunting task of interview preparation into manageable, actionable steps spread over 30 days, 30 hours, and 30 minutes. The concept of this book is rooted in the belief that thorough preparation is the key to confidence and success. We understand that preparing for an interview can be overwhelming, especially when faced with the myriad of tasks involved—from researching the company to practicing your responses to common interview questions. Our goal is to demystify this process by providing you with a clear roadmap, ensuring that you are well-prepared, poised, and ready to impress. The 30-Day Countdown sets the foundation for your preparation. Over the course of four weeks, you will engage in activities designed to enhance your understanding of the industry, company, and role for which you are applying. This period will also focus on self-assessment, helping you identify your strengths, weaknesses, and unique selling points. By dedicating time each day to specific tasks, you will build a solid knowledge base and gain the confidence needed to articulate your fit for the role. The 30-Hour Countdown intensifies your preparation as the intervie

Several investigations worldwide have focused on studying the impact of water pollution on human health, and evidence suggests potential public health issues and adverse effects on the environment. Anthropogenic factors have been recognized as one of the main causes of water resource pollution, particularly excessive pesticide use, identified as chemical compounds used in agricultural activities to keep crops free of weeds and insects, counteracting the growing demand for food production. Jalisco state is the largest agri-food producer in Mexico just recently, the purpose of the research was the monitoring and determination of 17 pesticides in 13 different points of the Ayuquila River during the years 2015, 2016, and 2017. The results of this study demonstrate the occurrence of pesticides in the entirety of sampling points with detection frequencies in a range of 10 - 100%, being malathion the pesticide most detected during the three years of the study. Finally, the risks to the environment (RQi) and human health (HQ) were calculated, evidencing that the concentrations detected for diazinon, dimethoate, emamectin, and malathion reached significant values (≥1) to represent a risk. The relatively high concentrations found in this study suggest that the presence and high prevalence rate of these pollutants in the water of the Ayuquila River could be derived from an intensive increase in the use of pesticide mixtures in the agricultural areas of the region., Recientemente un gran número de investigaciones a lo largo del mundo se han enfocado en estudiar el impacto de la contaminación del agua en la salud humana, evidenciando potenciales problemas de salud pública y efectos adversos al medio ambiente. Los factores antropogénicos han sido identificados como una de las principales causas de la contaminación de los recursos hídricos, en especial, el uso excesivo de plaguicidas, compuestos químicos utilizados en actividades agrícolas para mantener libres de maleza e insectos los cultivos, contrarrestando la creciente demanda de producción de alimentos. Siendo el estado de Jalisco el mayor productor agroalimentario de México en los últimos años, el objetivo de la presente investigación fue el monitoreo y determinación de 17 plaguicidas en 13 puntos diferentes de la cuenca del río Ayuquila, Jalisco durante los años 2015, 2016 y 2017. Entre los principales hallazgos se encontró la presencia de plaguicidas en todos los puntos de muestreo con frecuencias de detección en un rango del 10 – 100%, siendo el malatión el pesticida mayormente detectado durante los tres años del estudio. Finalmente, se calcularon los riesgos al medio ambiente (RQi) y la salud humana (HQ) demostrando que las concentraciones detectadas para diazinon, dimetoato, emamectina y malatión alcanzaron valores significativos (≥1) para representar un potencial riesgo a la población. Las concentraciones relativamente altas que fueron encontradas en este estudio sugieren que la presencia y alta tasa de prevalencia de plaguicidas en agua del río Ayuquila podría ser derivado de un intensivo aumento en el uso de mezclas de estos en las zonas agrícolas de la región.

Adsorption, a highly efficient water purification method and tool for pollution control, utilizes materials like clay. Compared to other commercial adsorbents, clay offers notable advantages including affordability, large specific surface area, accessibility, high ion exchange capacity, excellent adsorption properties, and non-toxicity. Pyrophyllite, among abundant natural clays, stands out due to its layered structure without interlayer cations or water molecules, offering favorable physical and chemical attributes. This study specifically examines the characterization of natural pyrophyllite ore treated with ultrasonic waves for 30 minutes and 6h. Analysis of samples using X-ray diffraction (XRD) technique indicates the removal of hard phases such as quartz and calcite from both treated samples in comparison to the raw ore. Energy dispersive X-ray spectroscopy (EDS) analysis, conducted as part of SEM-EDS analysis, revealed a significant reduction in the weight % of silicon. Specifically, the Si content decreased from 35.1 weight % in the raw ore to 28.7 after half an hour of treatment. Subsequently, after 6 hours, the most effective purification was achieved, with the Si content reaching only 18.6 weight %. Furthermore, UV-VIS analysis testing the sorption of a methylene blue solution in water reveals that ultrasonically treated pyrophyllite for 30 minutes achieves 97% efficiency after 24 hours, surpassing the 89% efficiency of the raw ore. Notably, after 6 hours of ultrasonic treatment, efficiency reaches nearly 98% after just 1 hour, confirming high efficacy of ultrasonic treatment on adsorption ability of pyrophyllite.

Andean and Bolivian Indigenous Communities of Titicaca often depend on their natural resources to ensure their food security, making them especially vulnerable to environmental fluctuations and changes in the ecosystem. Under this criterion, this study applies a qualitative methodology to analyze the relationship between the food security of the communities of the Cohana Bay region (taking the Chojasivi community as a case study) and water pollution in the Katari basin. The results reveal that such contamination has generated a potential effect on access, availability, use and stability over time of the food that makes up the basic food basket of the community., Las comunidades Indígenas Andino-bolivianas del Titicaca dependen a menudo de sus recursos naturales para garantizar su seguridad alimentaria, lo que las hace especialmente vulnerables a fluctuaciones ambientales y cambios en el ecosistema. Bajo ese criterio, el presente estudio aplica una metodología cualitativa para analizar la relación existente entre la seguridad alimentaria de las comunidades de la región de la bahía de Cohana (tomando como caso de estudio a la comunidad de Chojasivi) y la contaminación hídrica presente en la cuenca Katari. Los resultados revelan que dicha contaminación ha generado un efecto potencial en el acceso, disponibilidad, uso y estabilidad en el tiempo de los alimentos que componen la canasta básica de los comunarios.

Wastewater pollution of water resources takes a heavy toll on humans and on the environment. In highly polluted water bodies, self-purification is impaired, as the capacity of the riverine microbes to regenerate the ecosystem is overwhelmed. To date, information on the composition, dynamics and functions of the microbial communities in highly sewage-impacted rivers is limited, in particular in arid and semi-arid environments. In this year-long study of the highly sewage-impacted Al-Nar/Kidron stream in the Barr al-Khalil/Judean Desert east of Jerusalem, we show, using 16S and 18S rRNA gene-based community analysis and targeted qPCR, that both the bacterial and micro-eukaryotic communities, while abundant, exhibited low stability and diversity. Hydrolyzers of organics compounds, as well as nitrogen and phosphorus recyclers were lacking, pointing at reduced potential for regeneration. Furthermore, facultative bacterial predators were almost absent, and the obligate predators Bdellovibrio and like organisms were found at very low abundance. Finally, the micro-eukaryotic predatory community differed from those of other freshwater environments. The lack of essential biochemical functions may explain the stream's inability to self-purify, while the very low levels of bacterial predators and the disturbed assemblages of micro-eukaryote predators present in Al-Nar/Kidron may contribute to community instability and disfunction.

El objeto de este proyecto es definir las obras necesarias para la ejecución del tanque anti DSU (Descarga al Sistema Unitario) del Palmar para que genere laminación, retenga parte de la contaminación y diluya el resto, antes del vertido al cauce del Canal del Reguerón. Las obras contempladas en este proyecto se justifican principalmente por la obligatoriedad de cumplir con el RD 1290/2012.

Water pollution presents a substantial environmental challenge with extensive implications for water resources, ecosystem sustainability, and human health. Using a South African catchment, this study aimed to provide watershed managers with a framework for selecting best management practices (BMPs) to reduce pollution and the related risk to river users, while also including the perspectives of key catchment stakeholders. The framework encompassed the identification of and consultation with key stakeholders within the catchment. A Multi-Criteria Decision Analysis (MCDA) methodology using the Simple Multi-Attribute Rating Technique for Enhanced Stakeholder Take-up (SMARTEST) was used to identify and prioritise suitable BMPs in a case study. Decision alternatives and assessment criteria as well as their weights were derived based on stakeholder responses to a two-stage survey. Stakeholders included those utilising the river for domestic and recreational purposes, municipal representatives, scientists, NGOs, and engineers. The assessment of decision alternatives considered environmental, economic, and social criteria. The aggregated scores for decision alternatives highlighted the significance of involving stakeholders throughout the decision process. This study recommends the pairing of structural and non-structural BMPs. The findings provide valuable insights for catchment managers, policymakers, and environmental stakeholders seeking inclusive and effective pollution mitigation strategies in a catchment.

Water pollution presents a substantial environmental challenge with extensive implications for water resources, ecosystem sustainability, and human health. Using a South African catchment, this study aimed to provide watershed managers with a framework for selecting best management practices (BMPs) to reduce pollution and the related risk to river users, while also including the perspectives of key catchment stakeholders. The framework encompassed the identification of and consultation with key stakeholders within the catchment. A Multi-Criteria Decision Analysis (MCDA) methodology using the Simple Multi-Attribute Rating Technique for Enhanced Stakeholder Take-up (SMARTEST) was used to identify and prioritise suitable BMPs in a case study. Decision alternatives and assessment criteria as well as their weights were derived based on stakeholder responses to a two-stage survey. Stakeholders included those utilising the river for domestic and recreational purposes, municipal representatives, scientists, NGOs, and engineers. The assessment of decision alternatives considered environmental, economic, and social criteria. The aggregated scores for decision alternatives highlighted the significance of involving stakeholders throughout the decision process. This study recommends the pairing of structural and non-structural BMPs. The findings provide valuable insights for catchment managers, policymakers, and environmental stakeholders seeking inclusive and effective pollution mitigation strategies in a catchment.

Water pollution presents a substantial environmental challenge with extensive implications for water resources, ecosystem sustainability, and human health. Using a South African catchment, this study aimed to provide watershed managers with a framework for selecting best management practices (BMPs) to reduce pollution and the related risk to river users, while also including the perspectives of key catchment stakeholders. The framework encompassed the identification of and consultation with key stakeholders within the catchment. A Multi-Criteria Decision Analysis (MCDA) methodology using the Simple Multi-Attribute Rating Technique for Enhanced Stakeholder Take-up (SMARTEST) was used to identify and prioritise suitable BMPs in a case study. Decision alternatives and assessment criteria as well as their weights were derived based on stakeholder responses to a two-stage survey. Stakeholders included those utilising the river for domestic and recreational purposes, municipal representatives, scientists, NGOs, and engineers. The assessment of decision alternatives considered environmental, economic, and social criteria. The aggregated scores for decision alternatives highlighted the significance of involving stakeholders throughout the decision process. This study recommends the pairing of structural and non-structural BMPs. The findings provide valuable insights for catchment managers, policymakers, and environmental stakeholders seeking inclusive and effective pollution mitigation strategies in a catchment.

In a national park in Northeast Thailand, agricultural land has been converted from natural forest by small-scale farmers for cassava agriculture. We hypothesise that long-termed cassava monoculture leads to the degradation of soil properties. To test the hypothesis, we conducted a five-year (2016–2020) study on the physical and chemical properties of soil in cassava farmland, and also examined the soil properties of its adjacent natural forests, as a control. The examined cassava farmland was converted from the natural forest during the five years from 2011 to 2015. The significant decrease in organic carbon and the increases in exchangeable potassium and bulk density were found in 2016, indicating that these soil properties varied quickly following the farmland conversion. On the other hand, the significant increase in soil nitrogen and the decrease in pH were found later in 2020, indicating that these soil properties were gradually altered by repeated agricultural activities, such as fertilizer application and trampling. In contrast, there were no significant differences in available phosphate, electrical conductivity, cation exchange capacity, and the soil texture (the fractions of sand, silt, and clay) among the forest and farmland soils. The cation exchange capacity was positively correlated to the fraction of clay, the organic carbon, and pH. The use of glyphosate and paraquat herbicides is prohibited within national parks in Thailand. However, in 2020, glyphosate was detected in farmland soil (up to 5.0 mg kg⁻¹) during both the rainy and dry seasons, and glyphosate (up to 2.5 mg l⁻¹) was detected in stream water from the farmland during the dry season at least in 2020. Soil degradation and herbicide pollution may carry a high risk of causing irreversible changes in terrestrial ecosystems. We discuss the root causes of this issue from perspectives of agricultural production, economy, and the environmental impact, and propose effective policy measures.

Water pollution presents a substantial environmental challenge with extensive implications for water resources, ecosystem sustainability, and human health. Using a South African catchment, this study aimed to provide watershed managers with a framework for selecting best management practices (BMPs) to reduce pollution and the related risk to river users, while also including the perspectives of key catchment stakeholders. The framework encompassed the identification of and consultation with key stakeholders within the catchment. A Multi-Criteria Decision Analysis (MCDA) methodology using the Simple Multi-Attribute Rating Technique for Enhanced Stakeholder Take-up (SMARTEST) was used to identify and prioritise suitable BMPs in a case study. Decision alternatives and assessment criteria as well as their weights were derived based on stakeholder responses to a two-stage survey. Stakeholders included those utilising the river for domestic and recreational purposes, municipal representatives, scientists, NGOs, and engineers. The assessment of decision alternatives considered environmental, economic, and social criteria. The aggregated scores for decision alternatives highlighted the significance of involving stakeholders throughout the decision process. This study recommends the pairing of structural and non-structural BMPs. The findings provide valuable insights for catchment managers, policymakers, and environmental stakeholders seeking inclusive and effective pollution mitigation strategies in a catchment.

The presence of pesticides in aquatic ecosystems poses significant risks to non-target organisms, necessitating monitoring and environmental risk assessment. This study aimed to evaluate the dynamics and environmental risk of pesticides in a hydro-agricultural area with intensive agricultural practices, in the Mediterranean region (South of Portugal). Seasonality and location influenced pesticide numbers and concentrations, with the highest levels observed during the dry season. Triazines, phenylureas, and organophosphates were the predominant pesticide classes, with terbuthylazine, bentazone, terbutryn, diazinon, and metolachlor exhibiting the highest detection frequencies (68 % to 72 %). Notably, 44 % of the quantified pesticides are no longer authorized in Portugal, with 33 % posing a high environmental risk. Some insecticides, including imidacloprid, methiocarb, and malathion, were occasionally detected at concentrations that posed high risks to the aquatic ecosystem (RQ ≥ 1). Irgarol, an algicide used in irrigation canals, presented a high risk in 91 % of the analysed samples. The study's distribution profile of pesticides revealed a significant transportation of these compounds from reservoirs to irrigation hydrants, establishing them as a secondary source of crop and environmental contamination. Additionally, the assessment of spatial distribution and environmental risk allowed for the identification of specific pollutants in different locations, prioritizing them based on their ecotoxicological risk to aquatic ecosystems. These findings reinforce the importance of implementing management measures at the level of hydro-agricultural areas, helping to stop the cycle of pesticide contamination. Only this type of strategy will make it possible to protect water quality, biodiversity and the health of citizens, contributing to the European Union's objectives of improving the condition of freshwater bodies and promoting the sustainable use of pesticides.

In this study, we assessed clean-water scaricty for >10,000 sub-basins worldwide. To do this, we developed clean-water scarcity indicators including a water quantity-based indicator and a water quality-based indicator. To quantify these indicators, we combined the MARINA-Nutrients (Model to Assess River Inputs of pollutaNts to seAs), MAgPIE (Model of Agricultural Production and its Impact on the Environment), and VIC (Variable Infiltration Capacity) models into an integrated modelling framework (in Figure 1 of the publication).

Schiff bases (SBs) are important ligands in coordination chemistry due to their unique structural properties. Their ability to form complexes with metal ions has been exploited for the environmental detection of emerging water contaminants. In this work, we evaluated the complexation ability of three newly proposed SBs, 1-3, by complete conformational analysis, using a combination of Molecular Dynamics and Density Functional Theory studies, to understand their ability to coordinate toxic heavy metal (HMs) ions. From this study, it emerges that all the ligands present geometries that make them suitable to complex HMs through the N-imino moieties or, in the case of 3, with the support of the oxygen atoms of the ethylene diether chain. In particular, this ligand shows the most promising coordination behavior, particularly with Pb2+.

Designed on a desktop in Pittsburgh, PA, without boots on the ground or any sort of analysis of topography and geology, Equitrans took the shortest, least politically powerful route for its Mountain Valley Pipeline (MVP) to the purported energy need in the Southeast. Paying over $5m in mitigation money up front to Virginia’s political leaders for the environmental damage it knew it could cause, it was free and clear to proceed. Except we fought back. We became Mountain Valley Watch. And for eight years we held MVP to starts and stops because of their failure to adequately limit environmental damage, causing their costs to double and their timetable to languish. And there, but for an act of Congress and votes sold, we would be stalling them still to protect our resources from the environmental damage still to come, and we just might have won. However, the MVP project was authorized to proceed and the environmental damages were allowed to continue. In this presentation we will provide an overview of the Mountain Valley saga and the environmental damages that have continued to occur and be mostly ignored by the Virginia Department of Environmental Quality.

There are many challenges associated with microplastics (MPs), highlighting their presence and detrimental effects on both human health and the environment. This work presents a possible solution proposed by Captoplastic S.L (Captoplastic), a technology for the capture and control of MPs in any aqueous medium based on the agglomeration and magnetic separation of particles, achieving a high removal efficiency. Also, a proprietary method patented by Captoplastic for the control of MPs in any water sample is described, addressing current limitations in existing analytical techniques, such as analysis in complex samples. The study aims to determine the presence and concentration of MPs in a waste water treatment plant (WWTP). The methodology used is detailed, from sample preparation to experimental results, demonstrating the effectiveness of the method in the detection and quantification of MPs in real wastewater samples, validating the recovery of these pollutants in 96 %. This technological advance is presented as an effective and promising answer to face the global challenge of MPs contamination., Son muchos los desafíos asociados a los microplásticos (MPs), destacando su presencia y efectos perjudiciales tanto en la salud humana como en el medio ambiente. Este trabajo presenta una posible solución propuesta por Captoplastic S.L (Captoplastic), una tecnología de captura y control de MPs en cualquier medio acuoso que se basa en la aglomeración y separación magnética de las partículas, logrando una alta eficacia de eliminación. También, se describe un método propio patentado por Captoplastic para el control de los MPs en cualquier muestra de agua, abordando las limitaciones actuales en las técnicas analíticas existentes, como el análisis en muestras complejas. Este estudio también determina la presencia y concentración de MPs en el vertido de una estación depuradora de agua residual urbana (EDAR). Se detalla la metodología utilizada, desde la preparación de muestras hasta los resultados experimentales, demostrando la efectividad del método en la detección y cuantificación de MPs en muestras reales de aguas residuales, validando la recuperación de estos contaminantes en un 96 %. Este avance tecnológico se presenta como una respuesta efectiva y prometedora para enfrentar el desafío global de la contaminación por MPs., São muitos os desafios associados às microplásticos (MPs), destacando-se a sua presença e os seus efeitos prejudiciais tanto para a saúde humana como para o ambiente.Este trabalho apresenta uma possível solução proposta pela Captoplastic, uma tecnologia de captura e controlo de MPs em qualquer meio aquoso baseia-se na aglomeração e separação magnética das partículas, alcançando uma elevada eficiência de remoção. Além disso, é descrito um método patenteado pela Captoplastic S.L. (Captoplastic) para o controlo de MPs em qualquer amostra de água, abordando as limitações actuais das técnicas analíticas existentes, tais como a análise em amostras complexas. O estudo tem como objetivo determinar a presença e a concentração de MPs numa estação de tratamento de águas (ETAR). A metodologia utilizada é detalhada, desde a preparação da amostra até aos resultados experimentais, demonstrando a eficácia do método na deteção e quantificação de MPs em amostras reais de águas residuais, validando a recuperação destes poluentes em 96 %. Este avanço tecnológico é apresentado como uma resposta eficaz e promissora ao desafio global da poluição por MPs.

Only 1% of the surface water in the Netherlands has been classified as ‘good’, making it the EU member state with the worst quality of surface water (Didde, 2022). Polluted rivers cause problems such as worsened human health, reduced biodiversity, and poor soil fertility. To comply with the Water Framework Directive, there is an urgent need to transform water management in the Netherlands. This report adopts a research-by-design approach to address the issue of water pollution on a pilot project scale, specifically the river Eem in the Netherlands. The policies and interventions implemented in the river Eem area are categorised according to their transferability to different programming areas, namely urban, industry, or agriculture, creating a toolbox that can be used to upscale the same approach in various parts of the Eurodelta. The report answers the following research question: How can the transformation of the Eem Valley turn the river Eem into the healthiest river in Europe as a pilot for the Eurodelta? It catalyses rethinking pollution flows from human activities, industries, and agricultural practices. The goal is to develop sustainable practices for the land surrounding the river and create a synergy between improved soil and water quality. Finally, the report concludes with a toolbox of interventions and policies that contribute to improving river water quality. The toolbox forms the basis for implementing this small-scale approach on a larger scale, AR2U086 R&D Studio – Spatial Strategies for the Global Metropolis, AR2U088 R&D Methodology for Urbanism, Architecture, Urbanism and Building Sciences

Plastic pollution in aquatic environments poses significant concerns due to its potential to serve as a refuge for aquatic pathogens. However, the role of plastic surfaces and microbial biofilm interfaces in facilitating pathogen development remains poorly understood. In this study, a microcosm setup was employed to investigate the interactions between plastics and the microbial community and examine the differences in bacterial community composition and potential pathogen occurrences between the plastisphere-biofilm and surrounding seawater. Community composition analysis combined with SEM observations over time indicated that biofilm extracellular polymeric substance formation over 14 days had a link with the relative abundance and succession patterns of pathogen taxa. Colony clusters were observed on biofilms from day 7 and coincided with higher bacterial pathogen dominance. On day 14, pathogen abundance overall decreased with a potentially degrading biofilm. Pseudomonas and Pseudoalteromonas were the dominant potential pathogen groups observed in the microcosm. When further subjected to chemical treatment as an imposed environmental stress over time, biofilm-associated Psuedoalteromonas sharply increased in abundance after three days of exposure, but quickly diminished by 14 days in favor of genera such as Acinetobacter, Pseudomonas, and Staphylococcus. These results suggest that environmental plastisphere-biofilms can promote the early selection, enrichment, and spread of pathogenic bacteria in the aquatic environment and could be later worsened under chemical and long-term pressure. This study provided new insights into the succession of pathogens in plastisphere biofilms, contributing to the understanding of pathogen risks involved in emerging plastisphere biofilms in light of global plastic pollution.

In addition to introducing some "basic" international accounting standards, Financial Accounting-I and II covers the fundamentals of accounting. Additionally, this textbook is excellent for accounting modules in non-accountancy courses. The book follows a step-by-step approach and provides numerous practical examples to help explain concepts. Complete chapters on Suspense Accounts, Control Accounts, and Incomplete Records—topics that are not usually covered in other textbooks but present challenges for students—are also included.Presenting this updated version of the Financial Accounting textbook to the students and instructors of the Bachelor of Management programme, which was initiated by the University of Chennai, gives me immense pleasure.This book is written along the lines of the university's established syllabus. The book uses clear, persuasive language to convey its subject. This book offers a distinct and well-organized presentation of the subject matter. This book is suitable for students to use as a home tutor. We sincerely hope that this book will be of great assistance to the academic community and teaching staff.We are extremely grateful to Mrs Rajani Adam of Kripa Drishti Publications, Pune for their devoted and untiring personal attention accorded by them to this publication.

Water pollution presents a substantial environmental challenge with extensive implications for water resources, ecosystem sustainability, and human health. Using a South African catchment, this study aimed to provide watershed managers with a framework for selecting best management practices (BMPs) to reduce pollution and the related risk to river users, while also including the perspectives of key catchment stakeholders. The framework encompassed the identification of and consultation with key stakeholders within the catchment. A Multi-Criteria Decision Analysis (MCDA) methodology using the Simple Multi-Attribute Rating Technique for Enhanced Stakeholder Take-up (SMARTEST) was used to identify and prioritise suitable BMPs in a case study. Decision alternatives and assessment criteria as well as their weights were derived based on stakeholder responses to a two-stage survey. Stakeholders included those utilising the river for domestic and recreational purposes, municipal representatives, scientists, NGOs, and engineers. The assessment of decision alternatives considered environmental, economic, and social criteria. The aggregated scores for decision alternatives highlighted the significance of involving stakeholders throughout the decision process. This study recommends the pairing of structural and non-structural BMPs. The findings provide valuable insights for catchment managers, policymakers, and environmental stakeholders seeking inclusive and effective pollution mitigation strategies in a catchment.

(English) This thesis is focused on analysing the impact produced by washwater discharges from exhaust gas cleaning systems fitted on ships on the pH level of Barcelona port waters. These systems are being used on board the ships in order to be in compliance with Regulation 14 “Sulphur oxides and particulate matter” of Annex VI “Regulations for the prevention of air pollution from s hips ” of MARPOL Convention. Firs t of all, it has been carried out a deep analys is of the regulatory framework where exhaust gas cleaning systems are settled. Then, the hybrid, closed-loop and open-loop exhaust gas cleaning systems operation and its composition have been carefully studied, with a particular focus on the open-loop systems due to these systems are discharging continuously the residual washwater generated during the scrubbing process of exhaust gases from ship. In addition, it is set out in detail the methodology followed on this thesis for analysing the effect caused by exhaust gas cleaning systems washwater discharges over the Barcelona port water acidity level. During the research development a Barcelona port area was selected for being the main scenario to study the pH level of its water, analysing its evolution during the sampling and investigation period and considering its progress until beginnings of 2026. The Barcelona port area selected to carry out sampling and the subsequent pH analysis was the south basin of the Port. This Barcelona port area was s elected due to in this area there are s everal s hip’s calls in regular s ervices carrying vehicles (car carriers) which are berthing on these quays (30A, 30B, 30C) and using the open-loop exhaust gas cleaning systems during their manoeuvring in port and in some cases, during the complete call in port. To determine the acidity level of south basin water several laboratories were approached and the Institute of Environmental Assessment and Water Research (IDAEA) laboratory belonging to the Spanish National Research, (Català) Aques ta tes is s ’ha centrat en analitzar l’impacte que tenen les descàrregues d'aigües residuals procedents dels sistemes de depuració dels gas os d’es capament s obre el nivell d’acides a (pH) de les aig ües del port de Barcelona. Aquests sistemes estan sent utilitzats a bord dels vaixells per a donar compliment a la Regla 14 “ Òxids de sofre i matèria particulada” de l’Annex VI “Regles per a prevenir la contaminació atmosfèrica causada per els vaixells ” del Conveni MARPOL. En primer lloc, s’ha analitzat en profunditat el marc normatiu on es troben regulats aquests sistemes . Així mateix, s ’ha estudiat amb deteniment la composició i operativa dels sistemes de depuració dels gasos d’escapament de cicle obert, cicle tancat i híbrid, focalitzant la investigació sobre els de primer tipus, per la principal característica que els defineix, la descàrrega continuada d’aigües residuals generades durant el procés de depuració dels gas os d’es capament del vaixell. A continuació s ’exposa amb deteniment la metodologia seguida en aquesta tesis per a dur a terme l’anàlisi del efecte causat per les descàrregues de les aigües residuals d’aquests sistemes sobre el nivell d’acidesa de les aigües del port de Barcelona. Durant el desenvolupament de la investigació es va seleccionar un àrea del port de Barcelona per a estudiar el nivell d’acidesa de les seves aigües, analitzant la seva evolució fins a l’any 2026. L’àrea seleccionada del port de Barcelona per a dur a terme la presa de mostres d’aigua i el posterior anàlisis de pH va ser la dàrsena sud del Port. Es va seleccionar aquesta àrea del port perquè existeixen diverses escales de vaixells en línia regular que transporten carga rodada (carcarriers) que atraquen als molls que composen aquesta dàrsena (30A, 30B, 30C) i que durant les maniobres d’entrada i sortida inclús en determinats casos , durant tota l’escala del vaixell fan servir els sistemes de depuraci ó dels gasos d’escapament de cicle obert. Per a dur a term, (Español) Esta tesis se ha centrado en analizar el impacto que tienen las descargas de las aguas residules procedentes de los sistemas de limpieza de los gases de escape sobre el nivel de acidez (pH) de las aguas del puerto de Barcelona. Estos sistemas están siendo empleados a bordo de los buques para dar cumplimiento a la Regla 14 " Óxidos de azufre y materia particulada" del Anexo VI "Reglas para prevenir la contaminaci ón atmosférica ocasionada por los buques" del Convenio MARPOL. En primer lugar, se ha analizado en profundidad el marco normativo donde se encuentran regulados estos sistemas. Asimismo, se ha estudiado con detenimiento la composición y operativa de los sistemas de limpieza de los gases de escape de ciclo abierto, ciclo cerrado e híbrido, focalizando la investigación a los del primer tipo, por la principal característica que los define, la descarga continuada de las aguas residuales generadas durante el proceso de depuración de los gases de escape del buque. A continuación, se expone con detalle la metodología seguida en esta tesis para analizar el efecto causado por las descargas de las aguas de residuales de estos sistemas sobre el nivel de acidez de las aguas del puerto de Barcelona. Durante el desarrollo de esta investigación se seleccionó un área del puerto de Barcelona para estudiar el nivel de acidez de sus aguas, analizando su evolución durante el período de muestreo e investigación, con vista de su evolución hasta el año 2026. El área seleccionada del puerto de Barcelona para llevar a cabo la toma de muestras de agua y el posterior análisis de pH fue la dársena sur del Puerto. Se seleccionó esta área del puerto de Barcelona porque existen varias escalas de buques en línea regular y que transportan carga rodada (car carriers) que atracan en los muelles que componen esta dársena (30A, 30B y 30C) y que durante las maniobras de entrada y salida e incluso en algunos casos, durante todas sus escalas hacen uso de los sistemas de limpieza de los ga, Postprint (published version)

Qualitative, Quantitative, and Mixed Methods Research Design Approaches offers precise guidance on how to create research projects and research proposals. Readers are guided through the research methods process in this approachable text, which includes reading through relevant literature, formulating research questions and hypotheses, and designing the study. Authors John W. and J. David Creswell encourage readers to select the approach that best suits the research question by outlining qualitative, quantitative, and mixed methods approaches at each stage of the process. With the help of exercises, real writing samples, and walkthrough experiences, Research Design is an approachable and helpful book that engages students. This book helps students understand when to use mixed methods by modelling the kinds of problems that work best for various approaches. Moreover, the way in which theory and paradigms are emphasised aids students in understanding their significance. The book then discusses the essential components of conducting research, including developing methods and procedures for data collection and analysis, identifying research questions and hypotheses, stating a purpose for the study, and writing an introduction. Students and faculty who need help creating a plan or proposal for an academic journal article, dissertation, or thesis will find the book helpful. Key components include: a glossary of terms at the end of the book to give readers a working language for understanding research; an abundance of examples from a variety of disciplines and from books, journal articles, dissertation proposals, and dissertations; and a companion website with a wealth of resources for both students and teachers to use for independent study.

Cyanobacterial blooms in water bodies are a problem of a great concern among the community, because of the production of toxic metabolites, called cyanotoxins. Cyanobacteria are made up of many genera and species, with various mechanisms of intoxication; therefore, they constitute a serious environmental problem with detrimental repercussions on the health of living beings and humankind. Additionally, the high production of cyanotoxins associated with the presence of cyanobacteria has increased in extent and frequency throughout the world, which increases the concern of authorities and public service providers. On the other hand, it is important to point out that the conventional processes water treatment facilities are operating with are inefficient for their elimination and/or degradation, since cyanotoxins are soluble in water and persistent. In this regard, applying alternative technologies to traditional purification treatment systems is required to obtain water of quality that is suitable for human consumption. In this work, the use of ultrasound in the treatment of water contaminated with cyanobacteria and cyanotoxins is described, with special emphasis on the influence of the variation of significant parameters that intervene in the efficiency of elimination and inactivation of cyanobacteria, and the degradation of its toxins through the sonication process. With this, it is intended to position low-frequency ultrasound as an advanced technology that allows controlling the alteration of cyanobacteria and their toxins and avoiding the reduction of the quality of the water bodies that will supply the drinking water treatment plants., Las floraciones cianobacterianas en cuerpos de agua son un problema de gran interés entre la comunidad científica, debido a la producción de metabolitos tóxicos, denominados cianotoxinas. Las cianobacterias están formadas por un amplio número de géneros y especies, con diversos mecanismos de intoxicación; por lo que constituyen un grave problema ambiental con serias repercusiones en la salud de los seres vivos y del hombre. Adicionalmente, la alta producción de cianotoxinas asociada a la presencia de cianobacterias ha crecido enormemente en frecuencia y extensión en todo el mundo, lo cual aumenta la preocupación por parte de las autoridades y los prestadores de servicios públicos. Por otro lado, es importante señalar que los procesos convencionales con los que operan las instalaciones de tratamiento de agua son ineficientes para su eliminación y/o degradación dado que las cianotoxinas son solubles en agua y persistentes. En este sentido, se hace necesaria la aplicación de tecnologías alternativas a los sistemas de tratamiento tradicionales de potabilización con el fin de obtener un agua de calidad apta para el consumo humano. En el presente trabajo, se describe el uso de ultrasonido en el tratamiento de aguas contaminadas con cianobacterias y cianotoxinas, haciendo especial hincapié en la influencia de la variación de parámetros significativos que intervienen en la eficiencia de eliminación e inactivación de las cianobacterias, y la degradación de sus toxinas a través del proceso de sonicación. Con ello, se pretender posicionar el ultrasonido de baja frecuencia como tecnología de oxidación avanzada que permita controlar la proliferación de las cianobacterias y sus toxinas, y evitar la reducción de la calidad de los cuerpos de agua que abastecen las plantas de producción de agua potable.

The community's disposal of various types of waste leads to a high level of water pollution, which in turn causes a decline in both water quality and quantity. Pollution is the entry or containment of living things through human activities, resulting in a decrease in quality to a certain level, which leads to the environment not operating as specified. Various types of waste contribute to pollution, creating chemical and organic compounds that pose a threat to living organisms. This study aims to record and provide information on the effect of river water pollution on the population of tinhead fish (Aplocheilus panchax) in the river Jl. Purworejo, Central Java. The research methodology was carried out on the river Jl. Purworejo, Central Java, with the tools and materials used in the form of GPS smartphones, cameras, stationery (field books, pens), fish, and garbage in the research location. We conducted descriptive exploratory research, literature reviews, and library studies. We once collected data from a garbage-covered river. Observations confirmed that there were as many as seven species of tinhead fish in river waters. The findings indicate that the presence of organic and inorganic waste in polluted waters has an impact on the quantity of tinhead fish inhabiting clean waters with lush vegetation. This report is the first piece of information regarding the influence of river water quality on Jl. Purworejo, Central Java. Other parts of the river require research and cleanup efforts., The community's disposal of various types of waste leads to a high level of water pollution, which in turn causes a decline in both water quality and quantity. Pollution is the entry or containment of living things through human activities, resulting in a decrease in quality to a certain level, which leads to the environment not operating as specified. Various types of waste contribute to pollution, creating chemical and organic compounds that pose a threat to living organisms. This study aims to record and provide information on the effect of river water pollution on the population of tinhead fish (Aplocheilus panchax) in the river Jl. Purworejo, Central Java. The research methodology was carried out on the river Jl. Purworejo, Central Java, with the tools and materials used in the form of GPS smartphones, cameras, stationery (field books, pens), fish, and garbage in the research location. We conducted descriptive exploratory research, literature reviews, and library studies. We once collected data from a garbage-covered river. Observations confirmed that there were as many as seven species of tinhead fish in river waters. The findings indicate that the presence of organic and inorganic waste in polluted waters has an impact on the quantity of tinhead fish inhabiting clean waters with lush vegetation. This report is the first piece of information regarding the influence of river water quality on Jl. Purworejo, Central Java. Other parts of the river require research and cleanup efforts.

The community's disposal of various types of waste leads to a high level of water pollution, which in turn causes a decline in both water quality and quantity. Pollution is the entry or containment of living things through human activities, resulting in a decrease in quality to a certain level, which leads to the environment not operating as specified. Various types of waste contribute to pollution, creating chemical and organic compounds that pose a threat to living organisms. This study aims to record and provide information on the effect of river water pollution on the population of tinhead fish (Aplocheilus panchax) in the river Jl. Purworejo, Central Java. The research methodology was carried out on the river Jl. Purworejo, Central Java, with the tools and materials used in the form of GPS smartphones, cameras, stationery (field books, pens), fish, and garbage in the research location. We conducted descriptive exploratory research, literature reviews, and library studies. We once collected data from a garbage-covered river. Observations confirmed that there were as many as seven species of tinhead fish in river waters. The findings indicate that the presence of organic and inorganic waste in polluted waters has an impact on the quantity of tinhead fish inhabiting clean waters with lush vegetation. This report is the first piece of information regarding the influence of river water quality on Jl. Purworejo, Central Java. Other parts of the river require research and cleanup efforts., The community's disposal of various types of waste leads to a high level of water pollution, which in turn causes a decline in both water quality and quantity. Pollution is the entry or containment of living things through human activities, resulting in a decrease in quality to a certain level, which leads to the environment not operating as specified. Various types of waste contribute to pollution, creating chemical and organic compounds that pose a threat to living organisms. This study aims to record and provide information on the effect of river water pollution on the population of tinhead fish (Aplocheilus panchax) in the river Jl. Purworejo, Central Java. The research methodology was carried out on the river Jl. Purworejo, Central Java, with the tools and materials used in the form of GPS smartphones, cameras, stationery (field books, pens), fish, and garbage in the research location. We conducted descriptive exploratory research, literature reviews, and library studies. We once collected data from a garbage-covered river. Observations confirmed that there were as many as seven species of tinhead fish in river waters. The findings indicate that the presence of organic and inorganic waste in polluted waters has an impact on the quantity of tinhead fish inhabiting clean waters with lush vegetation. This report is the first piece of information regarding the influence of river water quality on Jl. Purworejo, Central Java. Other parts of the river require research and cleanup efforts.

Nontarget mass spectrometry has great potential to reveal patterns of water contamination globally through community science, but few studies are conducted in low-income countries, nor with open-source workflows, and few datasets are FAIR (Findable, Accessible, Interoperable, Reusable). Water was collected from urban and rural rivers around Dhaka, Bangladesh, and analyzed by liquid chromatography high-resolution mass spectrometry in four ionization modes (electrospray ionization +/-, atmospheric pressure chemical ionization +/-) with data -independent MS2 acquisition. The acquisition strategy was complementary: 19,427 and 7365 features were unique to ESI and APCI, respectively. The complexity of water pollution was revealed by >26,000 unique molecular features resolved by MS-DIAL, among which >20,000 correlated with urban sources in Dhaka. A major wastewater treatment plant was not a dominant pollution source, consistent with major contributions from uncontrolled urban drainage, a result that encourages development of further wastewater infrastructures. Matching of deconvoluted MS2 spectra to public libraries resulted in 62 confident annotations (i.e., Level 1-2a) and allowed semiquantification of 42 analytes including pharmaceuticals, pesticides, and personal care products. In silico structure prediction for the top 100 unknown molecular features associated with an urban source allowed 15 additional chemicals of anthropogenic origin to be annotated (i.e., Level 3). The authentic MS2 spectra were uploaded to MassBank Europe, mass spectral data were openly shared on the MassIVE repository, a tool (i.e., MASST) that could be used for community science environmental surveillance was demonstrated, and current limitations were discussed.

Esta monografía se realizó con el objetivo de describir ampliamente las técnicas actuales para el tratamiento de aguas contaminadas por hidrocarburos con el fin de consolidar la información disponible y mostrar que la industria del sector oil and gas trabaja constantemente en generar el menor impacto ambiental posible en sus actividades y con el compromiso de preservación de la biodiversidad. Para abarcar este tema se comenzó con una contextualización del concepto de hidrocarburos, tipos de hidrocarburos, sus principales características y todas las generalidades de la industria del sector petrolero. Posteriormente se realizó una revisión bibliográfica sobre contaminación por hidrocarburos en aguas, las técnicas y/o tecnologías utilizadas y los impactos ambientales que se pueden generar.

Water plays an important role in the main processes occurring in nature, as well as in human life. In industry, water is used as a raw material and energy source, as a cooling or heating agent, as a solvent, as an extractant, as a medium for transporting raw materials and materials, and for a number of other purposes.

Water plays an important role in the main processes occurring in nature, as well as in human life. In industry, water is used as a raw material and energy source, as a cooling or heating agent, as a solvent, as an extractant, as a medium for transporting raw materials and materials, and for a number of other purposes.

Urban rivers in Asian developing countries are becoming increasingly polluted due to industrialization and lacking treatment of wastewater. We investigated toxicity and likely sources of pollutants for the urban Shitalakshaya River, Bangladesh. Physiochemical variables and heavy metals were examined in water and sediment of an urban river section in Narayanganj City. The spatial distribution of quality indices and cluster groups indicates that the river’s downstream urban-affected areas are the most contaminated. Water and sediment quality guidelines indicate that COD, TSS, Fe, Pb, Zn in water, and Pb, Co, Ni, Cu, Zn, and particularly Pb and Cu in sediment, pose a serious threat to the aquatic ecosystem and human health in the area. Correlation, principal component (PCA), and cluster analysis (CA) indicate that the sources of Mn and Cd are geogenic, COD, TSS, Pb, Zn, Cu anthropogenic, and Fe, Ni, Co both geogenic and anthropogenic. The main anthropogenic pollution sources of the study area are municipal and industrial wastewater, boat and car traffic, runoff from agricultural areas, and stormwater runoff., Environmental Earth Sciences, 82(6), art. no. 140; 2023

Roughly half of the human population lives near the coast, and coastal water pollution (CWP) is widespread. Coastal waters along Tijuana, Mexico, and Imperial Beach (IB), USA, are frequently polluted by millions of gallons of untreated sewage and stormwater runoff. Entering coastal waters causes over 100 million global annual illnesses, but CWP has the potential to reach many more people on land via transfer in sea spray aerosol (SSA). Using 16S rRNA gene amplicon sequencing, we found sewage-associated bacteria in the polluted Tijuana River flowing into coastal waters and returning to land in marine aerosol. Tentative chemical identification from non-targeted tandem mass spectrometry identified anthropogenic compounds as chemical indicators of aerosolized CWP, but they were ubiquitous and present at highest concentrations in continental aerosol. Bacteria were better tracers of airborne CWP, and 40 tracer bacteria comprised up to 76% of the bacteria community in IB air. These findings confirm that CWP transfers in SSA and exposes many people along the coast. Climate change may exacerbate CWP with more extreme storms, and our findings call for minimizing CWP and investigating the health effects of airborne exposure.

The etiologies of Parkinson's disease (PD) remain unclear. Some, such as certain genetic mutations and head trauma, are widely known or easily identified. However, these causes or risk factors do not account for the majority of cases. Other, less visible factors must be at play. Among these is a widely used industrial solvent and common environmental contaminant little recognized for its likely role in PD: trichloroethylene (TCE). TCE is a simple, six-atom molecule that can decaffeinate coffee, degrease metal parts, and dry clean clothes. The colorless chemical was first linked to parkinsonism in 1969. Since then, four case studies involving eight individuals have linked occupational exposure to TCE to PD. In addition, a small epidemiological study found that occupational or hobby exposure to the solvent was associated with a 500% increased risk of developing PD. In multiple animal studies, the chemical reproduces the pathological features of PD.Exposure is not confined to those who work with the chemical. TCE pollutes outdoor air, taints groundwater, and contaminates indoor air. The molecule, like radon, evaporates from underlying soil and groundwater and enters homes, workplaces, or schools, often undetected. Despite widespread contamination and increasing industrial, commercial, and military use, clinical investigations of TCE and PD have been limited. Here, through a literature review and seven illustrative cases, we postulate that this ubiquitous chemical is contributing to the global rise of PD and that TCE is one of its invisible and highly preventable causes. Further research is now necessary to examine this hypothesis.

Water is the source of all life, but unfortunately, the water quality is getting only worse due to many factors like overuse, contamination, indifference and even by nature itself. By identifying the problem, we are one step closer to solving the problem, and that is why an intelligent water quality device is required to examine water and detect impurities within it. In this project, we are developing a device that uses an entirely new method to measure water quality. Even though the theory behind the device is very advanced, the device is still primitive in its functions and needs development to increase the usefulness and accuracy of the measurements!, Vatten är grunden till allt liv, men tyvärr blir vattenkvaliteten bara sämre på grund av många faktorer som överanvändning, förorening, likgiltighet och till och med av naturen själv. Genom att identifiera problemet är vi ett steg närmare att lösa problemet, och detta är därför en intelligent vattenkvalitetsenhet behövs för att undersöka vattnet och hitta orenheter i det. I detta projekt utvecklar vi en apparat som använder en helt ny metod för att mäta vattenkvaliteten. Även om teorin bakom apparaten är väldigt avancerad så är apparaten fortfarande primitiv i sina funktioner och behöver utveckling för att öka användbarheten och noggrannheten i mätningarna!

Esta monografía se realizó con el objetivo de describir ampliamente las técnicas actuales para el tratamiento de aguas contaminadas por hidrocarburos con el fin de consolidar la información disponible y mostrar que la industria del sector oil and gas trabaja constantemente en generar el menor impacto ambiental posible en sus actividades y con el compromiso de preservación de la biodiversidad. Para abarcar este tema se comenzó con una contextualización del concepto de hidrocarburos, tipos de hidrocarburos, sus principales características y todas las generalidades de la industria del sector petrolero. Posteriormente se realizó una revisión bibliográfica sobre contaminación por hidrocarburos en aguas, las técnicas y/o tecnologías utilizadas y los impactos ambientales que se pueden generar.

Water is the source of all life, but unfortunately, the water quality is getting only worse due to many factors like overuse, contamination, indifference and even by nature itself. By identifying the problem, we are one step closer to solving the problem, and that is why an intelligent water quality device is required to examine water and detect impurities within it. In this project, we are developing a device that uses an entirely new method to measure water quality. Even though the theory behind the device is very advanced, the device is still primitive in its functions and needs development to increase the usefulness and accuracy of the measurements!, Vatten är grunden till allt liv, men tyvärr blir vattenkvaliteten bara sämre på grund av många faktorer som överanvändning, förorening, likgiltighet och till och med av naturen själv. Genom att identifiera problemet är vi ett steg närmare att lösa problemet, och detta är därför en intelligent vattenkvalitetsenhet behövs för att undersöka vattnet och hitta orenheter i det. I detta projekt utvecklar vi en apparat som använder en helt ny metod för att mäta vattenkvaliteten. Även om teorin bakom apparaten är väldigt avancerad så är apparaten fortfarande primitiv i sina funktioner och behöver utveckling för att öka användbarheten och noggrannheten i mätningarna!

Las aguas superficiales próximas a áreas urbanas suelen presentar trazas de compuestos orgánicos de naturaleza recalcitrante o no biodegradables, tales como productos farmacéuticos, pesticidas, químicos industriales, etc. Esto se debe a la ineficiente eliminación de estas sustancias en estaciones de depuración convencionales. Tecnologías como los Procesos de Oxidación Avanzados (AOPs) son una alternativa para la eliminación de estas sustancias. Dentro de los AOPs, la fotocatálisis heterogénea ha demostrado es una opción de tratamiento viable. Como en el resto de AOPs se producen unas especies muy reactivas, los radicales OH∙, capaces de oxidar la materia orgánica. La fotocatálisis heterogénea con fotocatalizadores de dióxido de titanio (TiO2) presenta una alternativa interesante y permite su aplicación con energía solar. El reactor solar tipo Race Pond se ha seleccionado para este estudio por ser fácilmente fabricado a mayores escalas y transportable debido a su modesto nivel tecnológico. El fotocatalizador de dióxido de titanio será revestido a lo largo del reactor garantizando la activación de éste con la luz solar. La evolución de la degradación del compuesto estudiado durante el proceso fotocatalítico se realizará mediante cromatografía líquida de alta eficiencia y la determinación del carbono orgánico total. Además, se monitoreará la energía solar recibida en cada experimento. Con el objetivo de conocer y simular la degradación fotocatalítica del paracetamol como compuesto orgánico de interés, se ajustarán varios modelos cinéticos a partir de los datos experimentales recogidos y se compararán sus resultados., Les aigües superficials pròximes a àrees urbanes solen presentar traces de compostos orgànics de naturalesa recalcitrant o no biodegradables, com ara productes farmacèutics, pesticides, químics industrials, etc. Això es deu a la ineficient eliminació d'aquestes substàncies en estacions de depuració convencionals. Tecnologies com els Processos d'Oxidació Avançats (AOPs) són una alternativa per a l'eliminació d'aquestes substàncies. Dins dels AOPs, la fotocatálisis heterogènia ha demostrat és una opció de tractament viable. Com en la resta de AOPs es produeixen unes espècies molt reactives, els radicals OH∙, capaços d'oxidar la matèria orgànica. La fotocatálisis heterogènia amb fotocatalizadores de diòxid de titani (TiO2) presenta una alternativa interessant i permet la seva aplicació amb energia solar. El reactor solar tipus Race Pond s'ha seleccionat per a aquest estudi per ser fàcilment fabricat a majors escales i transportable a causa del seu modest nivell tecnològic. El fotocatalizador de diòxid de titani serà revestit al llarg del reactor garantint l'activació d'aquest amb la llum solar. L'evolució de la degradació del compost estudiat durant el procés fotocatalítico es realitzarà mitjançant cromatografia líquida d'alta eficiència i la determinació del carboni orgànic total. A més, es monitorarà l'energia solar rebuda en cada experiment. Amb l'objectiu de conèixer i simular la degradació fotocatalítica del paracetamol com a compost orgànic d'interès, s'ajustarà uns models cinètics a partir de les dades experimentals recollits i se'n compararan els resultats., Surface water near urban areas often contains traces of recalcitrant or non-biodegradable organic compounds such as pharmaceuticals, pesticides, industrial chemicals, etc. This is due to the inefficient removal of these substances in conventional wastewater treatment plants. Technologies such as Advanced Oxidation Processes (AOPs) are an alternative for the removal of these substances. Within AOPs, heterogeneous photocatalysis has proven to be a viable treatment option. As in other AOPs, highly reactive species, OH∙ radicals, are produced, which are capable of oxidising organic matter. Heterogeneous photocatalysis with titanium dioxide (TiO2) photocatalysts presents an interesting alternative and allows its application with solar energy. The Race Pond type solar reactor has been selected for this study because it is easily manufactured on a larger scale and transportable due to its modest technological level. The titanium dioxide photocatalyst will be coated throughout the reactor to ensure its activation by sunlight. The evolution of the degradation of the compound under study during the photocatalytic process will be monitored by high-performance liquid chromatography and the determination of total organic carbon. In addition, the solar energy received in each experiment will be monitored. In order to understand and simulate the photocatalytic degradation of paracetamol as the organic compound of interest, various kinetic models will be fitted on the basis of the experimental data collected and the comparison between them will be performed.

The Apatlaco River is a body of water of great state and even regional importance, since the life of a large part of the po-pulation of Morelos depend on it, as well as its climate and even its economic activities. However, despite being one of the main water resources, it is considered one of the most po-lluted at national level, so the government, academic institu-tions, civil society and private organizations have been making efforts to reduce the environmental impact on it. The purpose of this article is to briefly summarize six publications, with the aim of making pollution visible and safeguarding the health of the population and the ecosystems that depend on the well-being of this river., El río Apatlaco es un cuerpo de agua de gran importancia esta-tal e incluso regional, pues de él depende la vida de gran parte de la población morelense, su clima e incluso sus actividades económicas. Sin embargo, a pesar de ser uno de los principales recursos hídricos, es considerado como uno de los más conta-minados a nivel nacional, por lo que el gobierno, instituciones académicas, sociedad civil y organismos privados han realiza-do esfuerzos para disminuir el impacto ambiental en él. Este artículo tiene como propósito hacer una breve recapitulación de seis publicaciones, con la finalidad de visibilizar la contaminación y salvaguardar la salud de la población y los ecosistemas que dependen del bienestar de este río.

Wetland ecosystems of the Nile Delta face severe threats due to natural climatic changes and anthropogenic activities. Life and death assemblage comparisons can be implemented as a historical record to detect anthropogenic-induced environmental changes in the past few decades. A geometric morphometric approach was applied to quantify the pollution-induced morphological variation between life and death populations of the gastropod Melanoides tuberculata. The results indicated that life populations differ significantly from the death ones, where the first tend to be much smaller, more globular, and with a depressed aperture and whorl section. In addition, the phenetic diversity of the life populations was also decreased, and the allometric growth was shifted. These morphological changes in the life populations are well-known adaptations for reducing the cost of shell maintenance in polluted water. No distinct morphospace was found between life populations from different habitats, suggesting that habitats have no significant role in the current pollution-induced evolution.

Urban rivers in Asian developing countries are becoming increasingly polluted due to industrialization and lacking treatment of wastewater. We investigated toxicity and likely sources of pollutants for the urban Shitalakshaya River, Bangladesh. Physiochemical variables and heavy metals were examined in water and sediment of an urban river section in Narayanganj City. The spatial distribution of quality indices and cluster groups indicates that the river’s downstream urban-affected areas are the most contaminated. Water and sediment quality guidelines indicate that COD, TSS, Fe, Pb, Zn in water, and Pb, Co, Ni, Cu, Zn, and particularly Pb and Cu in sediment, pose a serious threat to the aquatic ecosystem and human health in the area. Correlation, principal component (PCA), and cluster analysis (CA) indicate that the sources of Mn and Cd are geogenic, COD, TSS, Pb, Zn, Cu anthropogenic, and Fe, Ni, Co both geogenic and anthropogenic. The main anthropogenic pollution sources of the study area are municipal and industrial wastewater, boat and car traffic, runoff from agricultural areas, and stormwater runoff., Environmental Earth Sciences, 82(6), art. no. 140; 2023

One of the most significant sources of drinking water is groundwater. Therefore, it is crucial to assess groundwater quality and ascertain potential causes of contamination to address pollution and provide people with clean drinking water. In this paper, groundwater in the Morava River plain is investigated and analyzed for 14 physicochemical parameters, such as pH, EC, HCO3 , NO3 - , PO4 3- , Cl- , SO4 2- , Na+ , K+ , Mg2+, Ca2+, Fe, Mn, and As. To determine groundwater facies and sources of pollution, three multivariate statistical analysis techniques were applied. Hierarchical Cluster Analysis (HCA) was used to group groundwater samples based on their similar chemical characteristics and to determine the dominant hydrochemical groundwater type. According to HCA results, groundwater samples were clustered into three groups, including Cluster 1 (72.3%), Cluster 2 (19.7%), and Cluster 3 (7.9%), and the main groundwater type was Ca-HCO3 type. Factor Analysis (FA) incorporated with Pearson correlation analysis was conducted to determine the main sources of pollution. Water-rock interactions and agricultural practices were identified as primary pollution sources in the investigated area.

The study was designed to assess the water quality based on physico-chemical parameters and phytoplankton communities of eight lentic water bodies of Haryana which are famous for mass bathing and religious rituals taking place here. To evaluate comparative analysis of composition, diversity and distribution of Phytoplankton and physico-chemical factors, water samples were collected seasonally viz., summer, monsoon, post monsoon and in winters from all the eight sites in triplicate. Total 118 phytoplankton taxa were observed at all sites. Among these cyanophyceae group was found most dominant at sites 1, 2, 4, 5, 7, 8 whereas cholorophyceae at site 6, bacillariophyceae at site 1,3,4,7 whereas xanthophyceae was in abundance at site 5. Population density (nos. L-1) wise phytoplankton trend was Cyanophyceae > Chlorophyceae > Bacillariophyceae >Desmidiaceae and Species diversity wise phytoplankton trend observed was Chlorophyceae > Bacillariophyceae > Cyanophyceae >Desmidiaceae. Correlation of different phytoplankton groups with physicochemical factors revealed a significant negative correlation of Cyanophyceae with pH, whereas a significant positive correlation of ortho-phosphate with Desmids and bacillariophyceae wheareas CO2 showed a positive correlation with Xanthophyceae. Appearance of pollution tolerant taxa of phytoplankton Microcystis aeruginosa, Phormidium sp., Scenedesmus spp., Pediastrum spp., Mougeotia sp., Synedra sp., Pediastrum spp. at most of the sites indicated the sign of the more organic pollution and degradation in the water quality of the selected sites due to religious immersion, mass bathing and by other anthropogenic activities. Suitable remedial actions should be adopted by regulatory bodies and policy makers to maintain the water quality of these aquatic systems.

The dumping of wastewater containing the dyes is harmful to the health of aquatic living beings. The colour in water bodies reduces the penetration of light and thereby reduces the concentration of dissolved oxygen (DO) of water bodies. The decreased value of DO is also harmful to aquatic organism. Therefore treatment of wastewater containing dyes becomes essential. Mushrooms have proven to be highly efficient and economical for removing pollutants through bioabsorption. Therefore, in the present study an attempt has been made to study the efficiency of Spent Mushroom Waste (SMW) viz. Agaricus bisporus as biosorbent for the biosorption of Basic Fuchsin Dye (BFD) from aqueous solution. The effects of certain factors such as the dose of adsorbent, temperature, exposure time, and pH were studied on the dye degradation by a given biomass of SMW. The results of the present study revealed that the optimum value of temperature, contact time, adsorbent dose, pH, was 7, 20 minutes, 20 mg, and 30˚C respectively. The biosorption efficiency of the used SMW ranged from good to excellent. The results of the present study revealed that the SMW of Agaricus bisporus is an economically and environmentally sound adsorbent and can be used for the degradation of dyes from water based solutions. Further investigation is required to enhance the adsorption rate of SMW of Agaricus bisporus.

Storm water management plan for Herriman, Utah.

Brick production is a business that benefits many people, such as providing building materials, employment, and interest to the business owners. However, it has been associated with many adverse impacts various components of ecosystem.Thepresent studyaimed to determine the impact of isolated brick kilns onthe pollution levelof water bodies in Fatehgarh Sahib and Rupnagar Districts of Punjab, India. Physicochemical and microbiological parameters of water were evaluated. The results revealed that the isolated brick kilns partially impacted the water bodies, as the concentration of heavy metals waspresent in surface water near the study area. Parameters such as electrical conductivity (EC), Turbidity, total dissolved solids (TDS), Chloride (Cl), alkalinity and chemical oxygen demand (COD) estimated for surface water samples showed high contamination levels, except for pH, which was acidic (6.2) for surface water. The groundwater was alkaline with pH estimated to be 7.6. The alkalinity and COD levels of groundwater were 693.3 mg/l and 12.4,respectively, as the peak values, and both values were beyond the permissible limits for drinking water. Total coliforms were present in all samples at low health risk (13/15), except two surface water ponds, which showed a health risk. One-third of groundwater was highly contaminated by Escherichia coli, whereas only one of the twelve samples was contaminated withE.coli. The changes of all estimated water parameters in groundwater with distance did not follow any spatial pattern. They could partially be attributed to the lithology of the soil and prominent agricultural activities in the region. The WQI was highly influenced by heavy metals, notably arsenic (As) from both lithologic and brick kilns' origins and lead (Pb) from burning fuels in the brick kilns.