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Introduction: According to Barros (2017), Bentonite is a mixture of clays, generally impure, very fine grained, formed mainly by 60 to 80% of montmorillonite and also Kaolinite, Calcite and Pyrite. At the operational base of Petromoc Maputo Company, there is a set of tanks for fuel storage, that from a complex of tanks with coupled pipelines for the entry and withdrawal of fuels and effluent disposal. Objective: To evaluate the use of bentonite in the removal of toxic cations from the effluents generated at Petromoc Company. Materials and Methods: Bentonite samples were collected at the Industrial Minerals company. The effluent and influent samples were collected in the separator box of the operational base. The physicochemical experiments were carried out at the Analytical Chemistry Laboratory of the Eduardo Mondlane University. For the physical characterization of the bentonite, the pycnometric density, porosity (P) and specific surface area were determined. The mineralogical characterization was performed by X-ray diffraction analysis. The chemical characterization of the effluent and influent was performed by Inductively Coupled Plasma Atomic Emission Spectroscopy. Results and Discussion: Mineralogical characterization showed the presence of bentonite minerals. The pH of the effluent before interacting with the bentonite was 3.22, after interaction the pH is between 5.8 and 9. High concentrations of Cadmium (Cd), Chromium (Cr), Copper (Cu), Titanium (Ti) and Zinc (Zn) were determined in the effluent before the interaction with the bentonite. After the interaction, a removal of toxic elements is verified. Conclusions: The bentonite showed high efficiency in the removal of toxic cations. [ABSTRACT FROM AUTHOR]

Copyright of Revista Colombiana de Biotecnología is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Catalana de Dret Ambiental is the property of Universitat Rovira I Virgili and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Anaerobic digestion to obtain biogas is considered a technology for producing energy from a wide variety of waste and byproducts of industrial processes. This research is aim to determine the production potential of biomethane generated through the anaerobic co-digestion of the distillery stillage and filter cake as a mixture product to increase the energy potential. Continuous operating equipment was chosen, for which up flow anaerobic reactors (UASB) were selected. The pre-treatment of the filter cake was established through the simultaneous use of alkaline and thermal treatment, an aspect without precedent in specialized literature and considered a contribution to research. A post-treatment stage was designed to increase the specific production of biogas, which constitutes a contribution to the design this kind of facilities in the country. [ABSTRACT FROM AUTHOR]

Copyright of Opuntia Brava is the property of Universidad de Ciencias Pedagogicas de Las Tunas, Centro de Documentacion e Informacion Pedagogica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Opuntia Brava is the property of Universidad de Ciencias Pedagogicas de Las Tunas, Centro de Documentacion e Informacion Pedagogica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cuadernos del Centro de Estudios de Diseño y Comunicación is the property of Cuadernos del Centro de Estudios de Diseno y Comunicacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Cuadernos del Centro de Estudios de Diseño y Comunicación is the property of Cuadernos del Centro de Estudios de Diseno y Comunicacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study evaluated the response of anamorphic fungi and biofilm algae to changes in physicochemical variables of water quality. Samples were taken at five sites of the Gutiérrez stream, located in the vicinity of Luján city (Buenos Aires Province, Argentina), a system affected by effluents from textile industries. The samples were taken at five sampling sites: two upstream sites and three sites downstream the effluent. Samples for the study of physicochemical variables (dissolved oxygen, temperature, pH, conductivity, nitrates, ammonium, chlorides, BOD, COD), as well as samples of algal biofilms developing on submerged substrates, and fungi developing on litter were collected from each site. In the case of the algae, fluorometric measurements were done to estimate biomass, production and photosynthetic efficiency. The relative and total abundances of the groups present were evaluated through microscopic observations. Regarding fungi, the species present in the different sites were determined and the sporulation rate and activities of three enzymes were evaluated. These indicators were useful to point out polluted areas, and in particular the biological indicators also showed recovery areas. The most important chemical variables indicating contaminated areas were ammonia, phosphates and COD concentration. The species of aquatic fungi were very indicative, particularly the abundance of species compared to the first site. Regarding algae, the highest sensitivity to contamination was detected through chlorophyll and minimum fluorescence (Fo). Other indicators such as sporulation rates, enzymatic activities and algae groups, provided complementary information to evaluate the state of the stream, and were sensitive to diffuse and point contamination. The application of chemical and biological indicators is recommended to increase the sensitivity of water quality analyses and to evaluate the effects of pollution. [ABSTRACT FROM AUTHOR]

The objective is to analyze solid waste management in municipal management from a systemic review. The methodology was congruent with the quantitative, exploratorybibliometric approach. The studies reviewed aim to diagnose and evaluate the impact of solid waste generated by various cities and economic sectors on the environment, ecotourism activities, public health; also in this process it is possible to identify the most common domestic waste and determine the properties of materials in landfills and industrial waste deposits. [ABSTRACT FROM AUTHOR]

Copyright of Revista de la Sociedad Química del Perú is the property of Sociedad Quimica del Peru and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tesla Revista Científica is the property of Puerto Madero Editorial Academica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista: Módulo Arquitectura CUC is the property of Corporacion Universidad de la Costa, CUC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bistua: Revista de la Facultad de Ciencias Básicas is the property of Facultad de Ciencias Basicas de la Universidad de Pamplona and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The discharge of domestic and industrial effluents into the oceans is one of the main forms of marine pollution. The impact of these effluents on the marine environment can be studied through the responses at different levels of biological organization within the ecosystem. The objective of this work was to evaluate biochemical (amylases, alkaline proteases, lipases, phenoloxidase and pyrogallol peroxidases activity) and ecological responses (abundance, size and population structure) of Boccardia proboscidea polychaetes to sewage environmental exposure, and to explore the relationship among them. The intertidial zone exposed to two sewage effluents with different characteristics were selected for the study: an intertidal effluent without previous treatment (Quequén) and a submarine outfall with primary treatment (Mar del Plata), both with their corresponding control areas. The results showed that no significant differences were found in the activity of digestive enzymes, nor of the pyrogallol-peroxidases of B. proboscidea. In contrast, phenoloxidase activity presented the highest values in the impacted area from Quequén. In turn, the highest population density of B. proboscidea was recorded there. On the other hand, the individuals in the control area from Quequén were longer than those from the rest of the areas. Regarding the frequency of age classes (larvae, juvenile and adult), in the impacted area from Quequén, the highest value of adults individuals was recorded. The relationship between the biochemical and ecological responses and the environmental variables showed that the total organic matter in sediments and density of B. proboscidea presented a positive linear correlation with the activity of phenoloxidase. Our results suggest that exposure to the Quequén sewage effluent would induce physiological changes in B. proboscidea, reflected by the high activity of the enzyme phenoloxidase, which in turn showed a positive relationship with the population density of this species. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos del Centro de Estudios de Diseño y Comunicación is the property of Cuadernos del Centro de Estudios de Diseno y Comunicacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

—The discharge of industrial wastewater, especially from industrial food processing, contributes to the contamination of natural water bodies because of high content of organic and inorganic substances. To avoid this action, wastewater treatment plants are designed and built to remove pollutants presence. However, for different reasons, many of these systems can fail, causing discharges of pollution agents, directly affecting environment. The main objective of this research was evaluate the operation of the preliminary units of a dairy product industry wastewater treatment plant, located in Táchira, Venezuela. To carry out this evaluation, a methodology integrated by the following stages was applied: description of the pre-treatment units, quantitative and qualitative characterization of the liquid effluents, and description of the pre-treatment system actual conditions. Being able to determine that pre-treatment does not ensure the physical-chemical conditions for the optimal functioning of the subsequent units. [ABSTRACT FROM AUTHOR]

Microplastics are present in the environment, especially in aquatic ecosystems, and are of priority interest due to their level of risk. This problem arises from poorly managed plastic waste which mostly ends up in dumps, rivers, lakes, and oceans, generating microplastics through physical and chemical degradation. Likewise, the discharges of domestic and industrial effluents increase the presence of microplastics in rivers. This research is the first study on microplastics developed in the lower basin of the Rímac river in the years 2017 and 2018 in the Lima region, Peru. The results show 97 microplastic particles collected in November 2017 and 2982 microplastic particles in August 2018. The predominant forms of microplastics correspond to fragments, films, filaments, and spherules. Microplastics present in sediments are associated with solid wastes found in the riverbed and the discharge of effluents into the river. These results are worrying because the Rimac river would be contaminated by microplastics, moreover knowing that this river is an important source of freshwater for the different activities in the great city of Metropolitan Lima. [ABSTRACT FROM AUTHOR]

The textile industry represents a decisive figure due to the negative impacts generated by its production processes on the quality of water, air, soil, and waste management. In particular, there is great concern about water resources, due to the quantities and types of chemicals used by this industry. For this reason, this article reviews the problems of wastewater from the textile industry and the technological advances for its treatment. As a result, it is found that small and medium-sized companies correspond to the most vulnerable sector in terms of their capacity to face the growing social, regulatory, and fiscal pressure in environmental matters, with needs for environmental goods and services that are increasing due to the informality of many companies, which, therefore, are not subject to any type of control by the environmental authorities. Different textile wastewater treatment methodologies were identified, including combined techniques such as electrocoagulation and electro-oxidation, advanced oxidation processes (PAO), Fenton (H2O/Fe2+) or photo-Fenton (UV/H2O2/Fe2+), among others, which guarantee high performance in the elimination, for example, of parameters such as chemical oxygen demand (COD), biochemical oxygen demand (BOD), and color. In addition, the use of titania nanomaterials as good adsorbents of metals such as lead (Pb), cadmium (Cd), copper (Cu), zinc (Zn), and nickel (Ni) and, as a low-cost alternative for small companies, waste materials, and minerals as good adsorbents of dyes, which can be reused with high efficiencies in several cycles. [ABSTRACT FROM AUTHOR]

Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Galicia Clínica is the property of Sociedad Gallega de Medicina Interna and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: Alkaline wastewater is a by-product of many textile industries. A pH adjustment is required by the addition of acidic products. By determining the kinetics of the neutralization reaction between these waters and CO2, the conceived treatment system will be more efficient. Objective: Define the rate law for the reaction between textile wastewater and carbon dioxide in the UB "Desembarco del Granma". Materials and Methods: Residual water from the textile process and CO2 were used. Experiments were carried out in a batch reactor. The integral method of kinetic data analysis and non-parametric hypothesis tests were used. Results and Discussion: The basic pH of the effluent to the mill is due to the use of NaOH in textile processes. Two non-parametric hypothesis tests for the values of the reaction-specific rate constants (k) reflected standard deviations of 0.171 and 0.76 respectively, higher than 0.05, so there are no significant differences between the four groups considered for each temperature. With the non-parametric hypothesis test for k at 50 and 30 °C, the level of significance (0.001) corroborated the dependence of each k with temperature. Conclusions: The specific rate constants for the temperatures of 30°C and 50°C determined are 57.98 and 105.94 L/(mol s) respectively for the neutralization reaction of the textile wastewater with CO2. The reaction is of order 2 presents an activation energy value of 24.5 kJ/mol. [ABSTRACT FROM AUTHOR]

The treatment of wastewater is a necessary and legally required reality, which has a direct impact on the benefit of water quality, by avoiding its environmental and landscape deterioration. The country has been installing different urban and industrial liquid waste treatment systems to deal with the degradation of marine, coastal, river and urban environmental systems, caused by the direct discharge of wastewater into the environment. Currently there are several technologies that are applied, depending mainly on the volumes of wastewater to be treated. Among the installed technologies, there are the biodiscs, which are installations of discs with a surface covered with biomass under aerobic conditions that, continuously, consume the organic matter present in the influent wastewater and the lamellar settlers, which have the function of separating the semi-heavy and heavy elements in suspension, which contain wastewater. In the present work, the dynamic behavior patterns of these two technologies installed in a wastewater treatment plant with the use of radiotracers are determined. [ABSTRACT FROM AUTHOR]

Heavy metal contamination is a public and environmental health problem, lead (Pb) and cadmium (Cd) contamination cause serious damage to human health and ecosystems, especially aquatic. In view of this problem, the study aimed to search the literature for relevant research on adsorption technologies for Cd (II) and Pb (II) ions, in surface water and industrial effluents. The search for works took place in the databases Scopus, Web of Science, CAB, ScienceDirect and Engineering Village, using the terms "Adsorptive Technologies", "Cd (II)", "Pb (II)", "Ion adsorption", "Means of influence" and "Adsorption of Cd (II) and Pb (II)", and analyzed with the help of Rayyan and Microsoft Excel software. The analysis of the studies showed an extensive diversity of materials with adsorbent capacity, such as nanocomposites, application of microorganism, and plant biomasses. Among the adsorbent materials highlighted the use of bacteria of the genus Bacillus sp. and application of chitosan freely or associated, nanocomposites based on chitosan showed adsorptive capacity of up to 98% for Pb ion (II). The use of the macrophyte Potamogeton malaianus allows to obtain high results in the adsorption of cadmium in water, through phytoremediation, adsorption occurs quickly (2 h) and achieves a dynamic equilibrium in less than 72 h. The average adsorption for Cd (II) ions is 94%, with an equilibrium adsorption capacity of 6.29-6.97 mg/kg. Among the means of influence, pH, temperature, adsorbent dosage, contact time and ion concentration are the main factors that interfere in adsorbent activity. [ABSTRACT FROM AUTHOR]

The presence of heavy metals in domestic and industrial effluents is a worldwide problem and its solution is a challenge for the environmental sanitation. For the elimination of metallic species from contaminated effluents, biological systems such as microorganisms constitute an ecological and efficient alternative. In the present research the ability of rhizobacteria to remove Pb2+ present in aqueous solutions, the effect of contact time and pH in the process was determined. Twenty-four bacterial strains isolated from the rhizosphere of the plants Heliconia rostrata and Cyperus sp. planted in artificial wetlands and Typha dominguensis, a plant belonging to natural wetlands, were used. All the bacterial biomasses showed capacity to remove lead and the 84.61 % of them achieved to uptake concentrations greater than 20 mg.g-1 of the metal. In three of the most promising rhizobacteria the speed of the process was evident, being enough 0.5h to reach uptake percentages between 36.8 and 85.5 %. In addition, they presented at pH 6.0 the highest Pb2+ removal with values from 29 to 35.8 mg.g-1. These results indicate the potential of rhizobacteria to be use in the elimination or reduction of lead contamination in wastewater. [ABSTRACT FROM AUTHOR]

In Mexico, the use of rivers as recreational centers drives the regional economy, however, most of these do not comply with the safety and quality of the water, therefore the microbiological risk derived from poor hygiene practices and discharges of industrial and urban waste increases every day, leaving public health exposed due to the deficiency in the monitoring of pathogens associated with infectious outbreaks. Escherichia coli (E. coli) and Salmonella Typhimurium (S. Typhimurium) have a high prevalence in rivers of Sinaloa, they are considered indicators of contamination and are of the main causes of gastrointestinal infections worldwide, due to their ability to survive in numerous natural environments. Therefore, in this research, the survival of both bacteria in recreational water from the Fuerte River, San José de Ahome, Sinaloa, Mexico, was evaluated. To determine bacterial survival, water samples from two river locations were used, before and after the 2019 Easter holiday period. The concentration of total dissolved solids was determined for each sample, and these were inoculated with E. coli and S. Typhimurium independently, at a concentration of 6 Log10 CFU mL-1, simulating river conditions in the laboratory. For this, both bacteria were evaluated every 48 h using the plate extension technique. The results obtained showed that both bacteria prior to the Easter period survived 12 days, with 6.2X101 CFU mL-1 and 4.5 X101 CFU mL-1 of E. coli at sampling points 1 and 2, respectively and, 4.66X101 CFU mL-1 and 5.4 X101 CFU mL-1 of S. Typhimurium at sampling points 1 and 2, respectively; likewise, after the holiday period they survived 1.2X102 CFU mL-1 until day 16 and 4 CFU mL-1 until day 20 of E. coli at sampling points 1 and 2, respectively, also 1.65 X102 CFU mL-1 until day 16 and 22 CFU mL-1 until day 22 of S. Typhimurium, at sampling points 1 and 2, respectively. By comparison of means with the Tukey test showed that, there are significant differences between the survival of E. coli and S. Typhimurium in the sampling dates, which could be attributed to the capacity to use nutrients, derived from the organic waste generated by human influx. [ABSTRACT FROM AUTHOR]

Introduction: Constructed wetlands are simple, affordable, and efficient “green” technologies for the treatment of various types of wastewater that, compared to conventional systems, offer an environmentally friendly approach, have low costs, and high potential for application preferably in developing countries. Objective: To evaluate the efficiency of horizontal subsurface flow wetlands bioactivated with efficient microorganisms in the removal of organic matter and other contaminants present in wastewater from the Chichí Padrón slaughterhouse. Materials and Methods: Four wetland systems were constructed, planted with Cyperus Alternifolius, using combinations of brown soil, limestone gravel, zeolite, and river sand as substrates. A 23 factorial design was used to evaluate the influence of hydraulic retention time, activation with microorganisms, and the type on pollutant removal efficiency. Results and Discussion: The waste from the production process were characterized, and the historical values of the last decade were studied. The maximum removal efficiency was achieved in the bioactivated S2 systems, for 96 hours, i.e. 96% for COD, 96.4% for BOD5, and 94% for fats and oils. Mathematical models describing the variable input-response variable relationship were also obtained, with high correlation coefficients (0.95-0.99). Conclusions: The use of subsurface flow wetland systems can be considered an efficient method for the treatment of wastewater generated in slaughterhouses, achieving high levels of pollutant removal and effluents compatible with the Cuban environmental regulations. [ABSTRACT FROM AUTHOR]

Contextualization: The textile industry makes use of large quantities of water and various chemicals that are part of the different stages of the cloth processing, including painting and finishing. As a result of the use of these chemicals, wastewater from the textile industry has high concentrations of chemical oxygen demand (COD), total organic carbon (TOC), total dissolved solids (TDS) and low biodegradability. Knowledge gap: Currently, the different industries in Colombia have failures in the final disposal of wastewater, since it has been identified that some industries do not comply the regulations that establish the maximum permissible values of some pollutants in their discharges. Specifically, the textile industry consumes large volumes of water and contributes considerably to the pollutant loads in the water bodies, which is why searching for alternatives to improve the treatment of this type of effluent is a matter of particular interest. On the other hand, current techniques for the treatment of these waters require the use of different chemical inputs, so the evaluation of electrocoagulation with graphite electrodes and UV radiation represents an alternative that allows reducing the consumption of inputs and reducing the concentration of pollutants present in these effluents. Purpose: This research aims to evaluate the electrocoagulation process in water treatment, using graphite electrodes and intensified by UV radiation, to determine the percentage of removal of COD, TOC, and TDS in the wastewater of the textile industry. Methodology: Experimental research was carried out to evaluate the technique of electrocoagulation, intensified by radiation from a submersible UV lamp. For methodological development, some physical and chemical parameters were measured before and after each test. A factorial-type experimental design was carried out, with two factors in three levels 32), specifically 9 trials; all of which were performed in triplicate for a total of 27 experiments. The factors or variables selected were the initial pH of the wastewater (6, 7 and 8) and the electric current intensity applied (0.5 A, 1 A, and 1.5 A). The response variables selected were the percentage of removal of COD, TOC, and TDS. After all the trials, the results were evaluated by analysis of variance to determine the effect or influence of each factor on each of the response variables. Results and conclusions: The tests determined that the most favorable experimental conditions for the electrocoagulation process were pH 8 at a electric current intensity of 0.5 amperes. The process has high efficiency in the percentage of removal of COD, TOC, and TDS for each of the tests, which is consistent with the use of inert electrodes that have greater chemical resistance than other electrodes, which facilitates the oxidation and reduction process in conjunction. Besides, the use of UV radiation intensifies the process by giving rise to the formation of ozone and OH* radicals in water, specially having an alkaline pH. These factors combined allow that higher values can be achieved in the removal of various contaminants present in the wastewater of the textile industry. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos del Centro de Estudios de Diseño y Comunicación is the property of Cuadernos del Centro de Estudios de Diseno y Comunicacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The Santiago bay is considered the second most polluted in the country. Due to Covid-19, the productivity of the industries that surround it, and the port maritime transfer decreased. Therefore, the objective of the work is to identify the influence that the residuals of some industries had on the contamination of the bay in 2020. Eleven parameters indicative of contamination were determined, such as heavy metals, dissolved oxygen, suspended solids and turbidity. It can be ensured that the Fiber Cement, Erasol, Oil Refinery, Soy Processing, and Brewery companies are the ones that contribute the highest concentrations of pollutants to the waters of the bay and that the quality of the waters of the area studied does not meet the requirements for bathing or fishing areas according to current Cuban regulations. [ABSTRACT FROM AUTHOR]

The Court of Justice of the European Union (CJEU) annulled a regulation on vehicle emissions and resolved several disputes related to hydrocarbon exploration permits, action plans for environmental noise, unauthorized water extraction, closure of a food waste storage facility, closure of facilities due to waste management deficiencies, an industrial waste treatment project, a building permit for a pig farm, protection of endangered species, opening hours of premises and establishments, creation of a livestock route, livestock confinement, and the liability of an insurance company in the payment of healthcare assistance to a hunter. The article highlights the importance of reducing accidents in hunting and protecting endangered species, as well as the need to implement stricter exams and tests to obtain a firearms permit and hunt in Spain. [Extracted from the article]

Catalytic ozonation (OC) is a promising technology in terms of efficiency and energy cost as a treatment of industrial effluents that have pollutants of emerging concern, since it improves the oxidative capacities of ozone through catalysts that promote its decomposition and the generation of radicals oxidants species. This article studied the status and evolution of OC through a literature review and bibliometric analysis combined with the S curve technique to quantitatively analyze 1714 publications in SCOPUS and Scielo Index from 1973 to 2021. The results showed that (1) the number of publications worldwide started in 1973 to have 189 documents in 2021; (2) China is the country with the highest number of publications and annual citations (958 and 19088, respectively) and it is a central country in international cooperation networks; (3) the analysis of keyword co-occurrence showed that research has prioritized OC reaction mechanisms, kinetic expressions, the catalysts, and since 2016, the pilot scale application with other advanced oxidation technologies; (4) The compound with larger research is oxalic acid and since 1999 ibuprofen and atrazine; (5) in Latin America, Brazil is the country with the most publications (32) and with the largest number of international cooperation networks and (5) Applied Catalysis B: Environmental and The Journal of the Brazilean Chemical Society (Latin America) are the journals with the best quartile that publish on OC. Finally, the S curve indicated that OC is in a growth stage in terms of the scientific maturity, exhibiting great potential in R&D. [ABSTRACT FROM AUTHOR]

The ruling of the High Court of Justice of Extremadura accepts an appeal filed against the modification of the Municipal General Plan (PGM) of Cáceres. The modification aimed to allow the regularization of previously established activities in protected areas, but it is considered that this violates the principle of non-regression. It is emphasized that the modification was driven by the particular interest of a promoting company and is not justified as a general interest. Furthermore, it is pointed out that the PGM already took into account the Plans for Use and Management (PRUG) and it was not necessary to adapt the regulation of protected areas. In summary, the ruling concludes that the modification of the PGM of Cáceres to allow industrial and waste uses in protected areas is unnecessary and contrary to the principle of non-regression in environmental matters. [Extracted from the article]

The article summarizes a sentence from the Superior Court of Justice of Castilla-León (Burgos) dated July 9, 2011, in which the Environmental Authorization granted to the company "Distiller, S.A." for the installation of a waste management and treatment plant in Ólvega (Soria) was challenged. The court determined that the activity required environmental authorization and that the competence to issue the Environmental Impact Statement corresponded to the Territorial Delegation of the Junta de Castilla y León. Furthermore, it was concluded that the Industrial Waste Plan of Castilla y León did not comply with the determinations established in community and national legislation, which compromised waste disposal. The author comments that the lack of waste disposal sites and the lack of adequate plans make it difficult to grant authorizations. [Extracted from the article]

Introduction: One of the most contaminated Cuban ecosystems is Santiago de Cuba's bay, which receives wastewater discharges from various industries such as ERASOL Oil Refining Company, for this reason it is necessary to know the generated pollution by this industry and if the NC 521, 2007 stablished parameters are fulfill. Objective: To evaluate the wastewaters from ERASOL Oil Refining Company of Santiago de Cuba, for knowing whether or not they comply with the current discharge standard. Materials and Methods: Residual samples were taken between march and august 2020. The samples were analyzed at the Quality Department of e "Elio Trincado" Laboratory of the Geominera Oriente Company and at the National Company of Asistance and Technical Services (ENAST, by its acronymic in Spanish) in Santiago de Cuba. The parameters, pH, suspended solids, settleable solids, total nitrogen, total phosphorus, biochemical oxygen demand (BOD5), chemical oxygen demand (COD) and fats and oils were determined. Results and Discussion: The obtained values were compared with the (NC 521, 2007), finding that the parameters, pH, settleable solids and total nitrogen were presented within the norm, while the indicators suspended solids, BOD5, COD, total phosphorus and fats and oils were presented above what is established by Cuban regulations. Conclusions: The ERASOL oil refining industry contributes with the organic load that reaches to Santiago de Cuba's bay, being one of the ecosystem pollutants sources. [ABSTRACT FROM AUTHOR]

Copyright of Observatorio Medioambiental is the property of Universidad Complutense de Madrid and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Colombiana de Biotecnología is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: The conserved factory "Reinado" is an industry that contribute to environment degradation because it is a high water consumer and generates a great amount of effluents and gaseous emissions. Objective: To carry out the Environmental Impact Assessment in "Reinado" factory through the Life Cycle Analysis methodology. Materials and Methods: The Environmental Diagnosis was carried out using the Methodology for the Environmental Diagnosis Execution to obtain the National Environmental Recognition. The SimaPro software was used for the Life Cycle Analysis, with a focusing cradle-togate. The ReCiPe methodology was used for the impact assessment, in the midpoint and endpoint versions. Results and Discussion: Production process has the greatest influence on environmental impacts, including the pollutants emission into the atmosphere (CO2, SO2, NOx and particulate matter) and excessive water consumption. With proposed actions, the company reduces human health damage in 81.6 % and in 67.8 %; to the ecosystem. It reduces impacts in 54 % by global warming and in 88 % by particulate matter formation and land acidification. Conclusions: The production process is the main polluting factor and with the application of the proposed actions, impact reductions of over 50 % can be achieved. [ABSTRACT FROM AUTHOR]

Introduction: In Cuba, an example of a polluted marine ecosystem is Santiago de Cuba's bay, which receives a considerable amount of industrial waste, including those generated by the Precast and Premix Company. Objective: To evaluate the composition of residual liquor from Santiago de Cuba Precast and Premix Company, based on physical-chemical parameters determination of, that constitute pollution indicators. Materials and Methods: Samples were taken from company residual at its final point of discharge, in a period between December 2019 and April 2020. The determined parameters were: heavy metals, pH, biochemical oxygen demand (BOD5), chemical oxygen demand (COD), suspended and settleable solids, total nitrogen and total phosphate. These was selected taken on account the specifications of (NC 521, 2007), for the release of waste waters to coastal zone and marine waters, being a necessity, the fulfillment of it's stablished limits. Results and Discussion: The waste water from the Prefabricated and Premixed Company contributes to the contamination of the Santiago Cuba's bay by suspended solids. Conclusions: The liquid residual from the Santiago de Cuba Precast and Premix Company contributes to the contamination of the Santiago de Cuba bay due to the contribution of suspended solids, despite the fact that they do not always violate the current standard. Other evaluations of this residual liquor and greater control in compliance with the process regulations are necessary. [ABSTRACT FROM AUTHOR]

The search of new treatments and technologies for the removal of toxic metals from wastewater has directed attention towards biosorption in the last years. In the present work the results of the first time use of the sugarcane bagasse pith as biosorbent in the removal of lead from aqueous solutions are shown. The physico-chemical and morphological characterization of the bagasse pith and the optimisation of the experimental conditions for the biosorption were performed. The maximum capacity obtained was 22,39 mg/g. The kinetic data were adjusted to the pseudo second order model and the isotherms for equilibrium studies fitted better to Langmuir's model. The results indicate that the bagasse pith is an effective adsorbent for the removal of Pb (II) ions present in aqueous solution, so it could be useful for the treatment of industrial wastes containing this metal. [ABSTRACT FROM AUTHOR]

Copyright of Revista Ambiente e Água is the property of Revista Ambiente e Agua and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista CIENCIA UNEMI is the property of Universidad Estatal de Milagro (UNEMI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Facultad de Ciencias Basicas is the property of Revista Facultad de Ciencias Basicas and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of ESTOA: Revista de la Facultad de Arquitectura y Urbanismo de la Universidad de Cuenca is the property of ESTOA Revista de la Facultad de Arquitectura y Urbanismo de la Universidad de Cuenca and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The objective of this research study is to estimate the energy potential of producer gas obtained from agroindustrial residues of cocoa and oil palm in Peru by using downdraft gasifier technology. This is performed based on the Serrato mathematical model, but applied to gasification processes proposed by Roy's model. The equilibrium constants and the kinetic velocity of the Roy's model are adjusted with multiplicative factors for fragments raging from 3.3 to 5.5 cm. This is validated using experimental data obtained from the literature. The maximum energy potential of the producer gas from the cocoa pod husk and oil palm empty fruit in Peru is estimated to be 4016.4 and 2108.7 TJ / year, respectively, for 3.3cm fragments. It is concluded that gasification using downdraft gasifiers is a good option to generate agro-industrial waste bioenergy to solve electrical and thermal energy shortages in Peruvian remote areas. [ABSTRACT FROM AUTHOR]

Copyright of Geominas is the property of FUNDA-GEOMINAS. (Fundacion de Egresados d Amigos de la Escuela de Ingenieria Geologica y de Minas) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introduction: "Desembarco del Granma" textile factory has a liquid waste treatment system using activated sludge. Fluctuations in these waters flow cause an organic loads deficit. It is necessary to meet microorganism's nutritional needs in process. Objective: To evaluate the feasibility of applying CENTERFOOD XL to improve wastewater treatment system in the textile factory "Desembarco del Granma". Materials and methods: CENTERFOOD XL (1 g/L of wastewater) (COLORCENTER CENTERFOOD XL, 2016) was used as nutrient for wastewater from the textile factory. The treatment effectiveness was evaluated by the suspended volatile solids (SSV). Results were processed with Statgraphics software. Results and Discussion: Dependence between SSV with nutrient concentration, time and production plants working was obtained. After 15 days without working production plants, SSV are 1712.8 and 3068.25 mg/L without and with nutrients addition respectively. The investment is $ 51253.58. Receiving bodies contamination decreases, effluent Chemical Oxygen Demand (COD) values comply with the established in (NC 27, 2012). Conclusions: One gram of CENTERFOOD XL should be added per residual water liter of, in treatment plant, if there are breaks superior to fifteen days, and SSV are above 3000 mg/L. Flow system investment cost is $ 51253.58. Nutrient supply every fifteen days is 1200.19 kg and it costs $ 3360.54. [ABSTRACT FROM AUTHOR]

Quality of surface waters is generally affected by discharges of domestic and industrial waste that alter their physical, chemical and bacteriological properties, rendering them unfit for consumption. The purpose of this study is to evaluate the water quality of Cabaña River (Moa, Holguín) by applying the Surface Water Quality Index proposed by Montoya and Contreras. For analyzing the physical-chemical and bacteriological compositions of water, 20 sampling sites were selected in 2017-2018 stage in two moments: rainy and dry seasons. A water quality index was calculated for each site and sampling date. It was found the water quality decreases as the river travels the path of its channel from the upper zone to the lower zone of the sub-basin. Results show that quality of water decreases in the same sense that river travels its path from the upper zone to the lower zone of the sub-basin. It was determined that a large part of the river's pollutant load comes from industrial and domestic waste and sewer discharges, which cause a decrease in the river's self-purification capacity due to their magnitude. [ABSTRACT FROM AUTHOR]