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Recultivated landfills, despite remedial actions, may pose a threat to human health and the environment, and therefore require long-term monitoring. The aim of the work was to investigate the impact of recultivation treatments on changes in the physical and chemical properties of soils in the vicinity of a landfill for waste other than hazardous and neutral. In order to carry out the work, drillings were made around the tested landfill, from which samples were taken and selected physical and chemical properties were determined, including substances causing risks that are particularly important for the protection of the earth's surface. The tested soils were characterized by a neutral and alkaline reaction and a high degree of saturation of the sorption complex with exchangeable basic cations after the use of dust and ash as a recultivation material. Leaks and leachate accumulation were found in the northern part of the facility. The permissible metal contents for industrial areas (group IV) and forest areas (group III) were not exceeded. In the northern part of the landfill area, the permissible content of cadmium was exceeded, while in the southern part, the permissible content of zinc, lead and cadmium was exceeded for agricultural areas (group II). The use of dust and ashes for the recultivation of the landfill in its southern part limited the migration of pollutants deeper into the profile and resulted in an improvement in the physical and chemical properties of the tested soils. The conclusion stated that there is a need to undertake further remediation activities and monitoring studies in order to minimize potential migration of pollutants into the soil and water environment, posing a threat to human health and the environment.

Landfills for disposing of solid waste are designed, located, managed, and monitored facilities expected to comply with government regulations to prevent contamination of the surrounding environment. After the average life expectancy of a typical landfill (30 to 50 years), a large investment in the construction, operation, final closure, and 30-year monitoring of a new site is needed. In this case study, we provide a holistic explanation of the unexpected development of elevated temperature landfills (ETLFs), such as that in the city of Bristol (United States) on the border of the states of Virginia and Tennessee, including the initial role played by coal ash. Despite the increasing frequency of ETLF occurrence, there is limited knowledge available about their associated environmental problems. The study uses mixed (qualitative, quantitative, and mapping) methods to analyze (1) the levels of odoriferous reduced sulfur compounds, ammonia, and volatile organic compounds (VOCs) emitted, (2) the ratio of methane to carbon dioxide concentrations in five locations, which dropped from unity (normal landfill) to 0.565, (3) the location of gas well heads with gradients of elevated temperatures, and (4) the correlation of the filling rate (upward of ~12 m y−1) with depth for registered events depositing coal ash waste. The work identifies spatial patterns that support the conclusion that coal ash served as the initiator for an ETLF creation. The case of the city of Bristol constitutes an example of ETLFs with elevated temperatures above the regulatory United States Environmental Protection Agency (EPA) upper threshold (65 °C), having alongside low methane emissions, large production of leachate, land subsidence, and a large production of organic compounds. Such landfills suffer abnormal chemical reactions within the waste mass that reduce the life expectancy of the site. Residents in such communities suffer intolerable odors from fugitive emissions and poor air quality becomes prominent, affecting the well-being and economy of surrounding populations. Conclusive information available indicates that the Bristol landfill has been producing large amounts of leachate and hazardous gases under the high pressures and temperatures developed within the landfill. A lesson learned, which should be used to prevent this problem in the future, is that the early addition of coal ash into the landfill would have catalyzed the process of ETLF creation. The work considers the public health risks and socioeconomic problems of residents exposed to emissions from an ETLF and discusses the efforts needed to prevent further incidents in other locations.

Objective: Physical and mental health concerns and symptoms, including sleep problems, low mood, extreme tiredness, and appetite loss are prevalent among people living near waste sites. This research examines differences in health symptoms among residents living near municipal solid waste sites in the Ashanti Region, Ghana. Methods: The study used cross-sectional data from 827 residents living near three municipal waste sites, including Besease, Asokore, and Dompoase sites in the Ashanti Region, Ghana. Descriptive statistics, Pearson's chi-square, and binary logistic regressions were performed to examine the differences and associations between the variables. Results: Health symptoms, including sleep problems/insomnia, frequent extreme tiredness, low mood, loss of appetite, stress, anxiety, and depression, were reported by the majority of the participants. Residents near open dumpsites (Besease and Asokore) exhibit significantly higher likelihoods of experiencing various health symptoms such as extreme fatigue, depression, psychological disorders, thinking and concentration problems, low mood, loss of appetite, and anxiety compared to those near the engineered Oti landfill in Dompoase. Conclusion: While emphasizing the importance of proper landfill design and management in Ghana, this study underscores the need for further longitudinal and clinical investigations. Clinically establishing the link between dumpsites and health symptoms is imperative for informed public health interventions and policy decisions aimed at mitigating the potential adverse health effects of landfills on residents' well-being. [ABSTRACT FROM AUTHOR]

Sustainable consumption of construction materials is an important segment of sustainable development goals towards reducing climate change. Since the consumption of natural aggregates raises environmental concerns, there is an increasing demand for use of recycled aggregates (RAs), as it enhances social and environmental benefits and creates a market opportunity. This paper presents the practice of using recycled construction and demolition waste (CDW) in the Belgrade city area (Serbia) as a resource. Two groups of CDW from Vinča landfill site near Belgrade are analyzed: raw material before, and RAs after, construction of a recycling facility on site. Comprehensive characterization is performed (including particle size distribution, density, water and organic pollutants content, various mechanical resistances, flakiness index, etc.) and compilation of samples analyzed and compared to show a holistic overview. The test outputs in both groups show acceptable values and meet required standards, indicating that recycled CDW generated in the Belgrade area can be used as a substitute to natural aggregates. In addition to that, the environmental and economic benefits from this use as a substitute are analyzed and discussed, proving the substantial income from sold Ras and the landscaping benefits, as well as ecological and economic benefits from energy savings. [ABSTRACT FROM AUTHOR]

The landfill is a cheap way of solid waste management in developing countries. The majority of landfills are non-sanitary and work as open garbage dumping sites and pose threats to public and environmental health. Therefore, an indepth understanding of the chemistry and microbiology of landfills is imperative to develop the right policies for landfill management. In the current study, we investigated the chemistry and microbiology of three Indian landfill sites using culture-based and culture-independent molecular approaches. Our data indicate that the nature of landfills varies from site to site in terms of chemistry, pollutants, and pathogens. We also enriched and cultivated three methanogens using an optimized medium and constructed two high-quality draft genomes from enriched microbiomes using metagenome-assembled genome approaches. The phylogenomic study of one draft genome showed the highest 93% sequence similarity with members of Methanomassiliicoccaceae and was always enriched with Acholoplasma and Anaerohalosphaera lusitana. Despite all the efforts, we did not isolate it in pure culture and hypothesized that for the cultivation of some not-yet-cultured methanogen, the presence of other organisms plays an important role, and their syntrophic interaction must be discerned for its successful cultivation in the future. Co-cultivation of amino acid-degrading organisms indicates that their co-culture can assist in boosting the growth of methanogens. In addition, our data indicated that landfill leachate contains a heavy load of pollutants and treatment is a must before discharge in nature or use in irrigation or biofertilizer. [ABSTRACT FROM AUTHOR]

Objectives] This study was conducted to explore the occurrence levels of endocrine disruptors ( EDCs) in rural areas around a county landfill in Tongren City. [Methods] The water around the landfill was sampled and analyzed. A solid-phase extraction and high performance liquid chromatography-tandem mass spectrometry ( SPE-UPLC-MS/MS) method was established for the determination of 27 ED Cs. After the HLB solid-phase extraction column was activated, a water sample, which was adjusted with phosphoric acid to a pH of 2 ( ± 0. 5) and added with 500 mg of disodium EDTA, was loaded, and 5 ml of water and 20% methanol water was added for washing. Next, 10 ml of elution solution was added for elution, and the collected eluate was evaporated under reduced pressure at 40 oC to near dryness, and 10 ml of reconstitution solution was added to a constant volume. An ACQUITY UPLC BEH C18 (100 x2.1 mm, 2.6μm) chromatographic column was adopted for LC separation by gradient elution with pure water solution-acetonitrile as the mobile phase. For MS detection, the MRM mode was adopted for collection, and the positive and negative ion modes were switched for simultaneous determination, and the internal standard method was used for quantification. [Results] The correlation coefficient R2 was greater than 0. 99 in the linear range of each target substance. The limits of quantitation in the method were between 0.05 and 2.00 ng/L, and the recoveries ranged from 75.3% to 105. 7%. [Conclusions] The method has high sensitivity, good accuracy and strong practical value. [ABSTRACT FROM AUTHOR]

The increase of the urban population in the world and the associated economic expansion have accelerated municipal solid waste (MSW) production. About 40% of the world's waste is disposed of inappropriately in open dumps and/or only partially controlled landfills. Many types of waste are mixed and disposed without treatment in illegal dumpsites or non-sanitary landfills, especially in developing countries such as Brazil. This research aims to identify areas for the implementation of landfills in the tropical climate of the Metropolitan Region of Salvador (MRS), Brazil, which generates approximately 4900 tons of MSW per day. In a first step, geographic information system (GIS) is used to apply Boolean logic to 15 restrictive criteria based on Brazilian legislation. In a second step, locations found to be legally appropriate are ranked with the analytic hierarchy process (AHP) in a multi-criteria decision approach using 11 non-restrictive criteria based on technical knowledge and literature. Results show that 6% of the areas are classified as highly suitable, 16% as suitable, 9% not suitable, and 69% with legal restrictions. The result of this study serves as a guide for suitably siting landfills in the MRS and similar regions in the world, reducing costs and biased assessments potentially implied by empirical methods. [ABSTRACT FROM AUTHOR]

Copyright of Environmental & Social Management Journal / Revista de Gestão Social e Ambiental is the property of Environmental & Social Management Journal 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.)

Landfills play a crucial role in waste management, but the age of a landfill can have a substantial effect on the composition and characteristics of the waste contained within it. This study seeks to examine the waste characteristics, including microbes, at the Piyungan landfill in Yogyakarta, Indonesia, using the landfill's age as a determinant. The research methodology is exhaustive, incorporating both qualitative and quantitative analyses. A representative sampling method is used to collect waste samples from various sections of the landfill, taking into account the varying ages of the waste. 0-6 months, 1-2 years, 3-4 years, and >5 years are used to determine location points based on the age variation of the garbage pile. Using techniques such as physical separation, chemical analysis, and microbe characterization, the collected samples are then classified and analyzed. Based on the age of the landfill, the analysis reveals dynamic variations in waste characteristics. Mixed methods in landfill operations affected the characteristics of waste. The results highlight the importance of proper waste management strategies that evolve with the changing composition of waste and microbe characteristics over time. Effective waste segregation, recycling, and resource recovery initiatives can be implemented to minimize the environmental impact of landfills and maximize resource utilization. In conclusion, this study emphasizes the significance of considering the age of a landfill when assessing waste characteristics. By understanding how waste evolves over time within landfills, sustainable waste management practices can be implemented, leading to reduced environmental impact and improved resource efficiency. [ABSTRACT FROM AUTHOR]

To localize high-density polyethylene membrane leakage in operating landfills, a leakage localization method based on the wave velocity inversion model is proposed in this study. A double-layer acceleration sensor and elastic wave generator are placed under the high-density polyethylene membrane. First-arriving wave extraction is performed using a short-time average/long-time average method and an Akaike information criterion joint algorithm. When a high-density polyethylene membrane breakage signal is received, parameter information is extracted. An elastic wave with the same frequency as the breakage signal is emitted by the generator. The mean value of the wave velocity of the clay layer is calculated as the time-difference positioning wave velocity to determine the breakage point location. If no breakage signal is received, the generator emits a fixed-frequency elastic wave to invert the wave velocity of the leakage area, and a wave velocity tomography map is generated for leakage point localization. Leaky point shapes are identified in combination with soil moisture migration principles. The experimental results demonstrate that the error between the actual leakage coordinates and positioning coordinates meets the engineering requirements and that the inversion model can effectively identify block and slit leakage points. [ABSTRACT FROM AUTHOR]

Presently, India is in the stage of installation of solar photovoltaic panels and no focus is being given towards the impending problem of handling solar waste. The absence of adequate regulations, guidelines and operational infrastructure for photovoltaic waste in the country may lead to waste being inappropriately landfilled or incinerated in a manner that may be detrimental to human health and the environment. Business as usual projection estimates 6.64 million tonnes and 5.48 million tonnes of waste generation due to the early and regular losses using the Weibull distribution function, respectively by 2040 in India. The current study also systematically investigates various policies and legislation developments on the end-of-life of photovoltaic modules in various regions of the world, to identify gaps for further assessment. Using life cycle assessment methodology, this paper compares the environmental impacts of landfilling end-of-life crystalline silicon panels with avoided burden approach due to the recycling of materials. It has been demonstrated that solar photovoltaic recycling and reusing the recovered materials will result in impact reduction in the forthcoming production phase by as high as 70%. Further, the outcomes of carbon footprint, single score indicator with the application of Intergovernmental Panel on Climate Change also predicts lower values for avoided burden approach due to recycling (15,393.96 kgCO2 eq) in comparison to landfill approach (19,844.054 kg CO2 eq). The outcomes of this study aim to illuminate the importance of the sustainable management of photovoltaic panels at end-of-life. [ABSTRACT FROM AUTHOR]

In this study, the spatiotemporal variation of water pollution near a municipal solid waste landfill in Chorzow (southern Poland) was investigated. For this purpose, analyses of electrolytic conductivity, sulfates, chlorides, nitrates, ammonium ion, and boron were performed. The landfill water pollution index (LWPI) and Nemerow Pollution Index (NPI) were calculated on the basis of groundwater monitoring results for the study area. The results indicated very high pollution in each piezometer. The value of the LWPI index for the piezometer located at the groundwater outflow from the landfill exceeded 320, and values exceeding five indicate a high risk to groundwater. In the case of the NPI index, the value reached nearly 44, which also indicates a high risk. The structure of both indices allows for the assessment of the level of threat to groundwater in areas of pollution sources. However, the NPI index highlights the contribution of parameters other than main ions to total water pollution. The use of indexes in assessing the quality of groundwater around pollution hotspots is very helpful in waste management, as it allows for determining the degree of threat to water, and thus can help in implementing additional preventive solutions. [ABSTRACT FROM AUTHOR]

Introduction. Domestic waste management is an extremely important issue for all countries of the world, especially for the countries of the former Soviet Union, as the current state of solid waste disposal in Ukraine is extremely unsatisfactory. According to the European Commission, the amount of waste in the European Union has increased in recent years to more than 2.5 billion tons per year. The results of the Waste Atlas report on the world's 50 largest landfills show that 64 million people are affected by the 50 largest landfills every day. Ukraine has a total of 6045 landfills and dumpsites. The general trend in Ukraine, in contrast to European countries, is a low level of recycling and utilization of solid waste and a high rate of landfill disposal. The vast majority of landfills (80 to 90%) operate in overload mode. Landfills, in particular solid waste landfills, are the main pollutants of the atmosphere, hydrosphere and soil. Therefore, determining the level of environmental hazard of heavy metals in the soil as a result of the impact of landfills and solid waste dumps is very important. Objective. The purpose of the article is to determine the impact of solid waste landfills on public health due to soil contamination with heavy metals. Methodology. In order to determine the level of environmental hazard of household waste storage at landfills and dumps, the paper assesses the risk to public health from soil contamination in the area of the Hrybovychi landfill (Lviv oblast), Rohan landfill (Kharkiv oblast), and Novovodolazhske landfill (Kharkiv oblast). The risk to public health from soil contamination at solid waste landfills was assessed using the traditional US EPA method and a new method for determining the potential risk to public health from soil contamination with heavy metals. Results. The article compares two fundamentally different methodological approaches to determining the level of environmental hazard of soil contamination with heavy metals. The risk to public health from soil contamination on the territory of solid waste landfills according to the US EPA method corresponds to hazard class 5 (extremely high hazard level) according to all calculations. The results of the assessment of the potential risk to public health from soil contamination using the new method at solid waste landfills correspond to hazard classes 2-4. Comparison of methodological principles for assessing the risk to public health from soil pollution has shown the advantages of using the new method of potential risk assessment. The use of the new method of assessing the potential risk to public health from soil pollution will help improve science-based management of household waste and direct financial resources to reduce the environmental hazard of soil and land pollution in Ukraine. Scientific novelty. The article presents an improved method for assessing the risk to public health from soil pollution, which represents the scientific novelty of the work Practical significance. Determining the environmental hazard of soil pollution due to the impact of landfills and solid waste dumps makes it possible to prioritize the implementation of environmental protection measures and will contribute to the implementation of environmentally sound environmental management, so the research is of practical importance. [ABSTRACT FROM AUTHOR]

The self-potential (SP) method investigated leachate distribution near Rawa Kucing. Rawa Kucing is the main landfill in Tangerang that burned almost the entire area. A total of 78 SP data points were scattered throughout the study area. The SP values range from -20 to 16 millivolts, dominated by negative values attributed to electrokinetic processes. The results suggest that a highly conductive zone in the study area may have been caused by high contamination from leachate. The possible direction of leachate flow is towards the Cisadane stream, located west of the landfill. On the other hand, a quantitative interpretation of SP was conducted for two profiles, AA' and BB'. The result shows that the vertical spreading of leachate was found at a depth of h 6,59 and 3,53 meters and H 8,10 and 4,34 meters for AA' and BB', respectively, with an angle of 28,810. Additionally, groundwater samples were collected from four sites near the landfill to assess groundwater quality using physical and chemical analysis. Based on the Indonesian Ministry of Health Regulation, most parameters indicated low contamination. Statistical analysis revealed that the groundwater near the landfill was worthy of consumption. Based on the results, rainfall during the study significantly reduced the concentrations of contaminants in leachate due to dilution. [ABSTRACT FROM AUTHOR]

In three different projects photographer Laura Van Severen has approached (or is still approaching) the landscape in three distinctively different ways. For the images that became her book Land. On the brink of some formidably complex matter, Van Severen photographed the landscape from her childhood memories with no preconceived subject or idea, using the practice of landscape photography as a method (a way of working), rather than a goal (a way of gathering information about a place). Experiencing a lot of freedom in this photographic investigation, the resulting images offered abstraction, geometry and fragmentation - and not much for a viewer to hold on to in terms of depth and scale. The book, then, became an invitation for a reader to take these fragments and design his own (visual) landscape. Just one of many human interventions, it were landfills and the way they altered the landscape that caught her eye and interest next. This could not be merely addressed photographically Van Severen felt, - although the question of the 'realness' of a hill or mound in the landscape comes into play - as it comes with ecological, global and as result of that also political implications. A very concrete subject now, it meant that photographs alone were not enough to comprehend this issue; data and further research into the global connections and implications of landfills were now also needed. The third project discussed here focusses on women in a rural environment, and turns the roles around. Now it is not about the (invisible) human and his impact on the land, but about the impact of the land on these women, and about how they inhabit it. [ABSTRACT FROM AUTHOR]

Landfill leachate, due to its high total pollution, and above all due to their high organic pollution, represents a significant environmental problem. This study investigated the impacts of the Tilić ada landfill on ground and surface waters. The location of the landfill Tilić ada is extremely sensitive due to the fact that it is located right next to the Drina river bed on the border with the Republic of Serbia, and especially because the source of drinking water Tilić ada is located at a distance of approx. 500 meters. Therefore, analyses of impact of leachate from the landfill were carried out, which indicated that the groundwater is at risk even 5 years after the landfill was closed. At the same time, water analyses from the Drina River were also carried out, which showed that the water quality was not impaired in relation to the defined water class. [ABSTRACT FROM AUTHOR]

Groundwater contamination due to the leaching of harmful pollutants such as heavy metals, xenobiotic compounds, and other inorganic compounds from solid waste dumping sites has become a major health concern in recent times. Therefore, to assess the effects of the Bandhwari landfill site, groundwater samples from the surrounding region of the dumping site were collected and analyzed for heavy metals and physicochemical properties. The total dissolved solids (TDS) of 67% of samples exceeded the Bureau of Indian Standards (BIS) permissible limits which makes it unfit for drinking purposes. The groundwater samples were also analyzed for iron (Fe), lead (Pb), zinc (Zn), nickel (Ni), copper (Cu), cadmium (Cd), and chromium (Cr) concentrations and results of heavy metal concentration in the groundwater around the Bandhwari landfill follow the concentration trend of Pb.Cd.Ni.Cu.Zn.Fe.Cr. Risk assessment of consumers' health was done using target hazard quotient calculations which were less than unity (threshold value of ,1), indicating that heavy metal concentrations do not pose any serious health effect according to total hazard quotient values. The results of the study made it evident that groundwater is not suitable for drinking purposes due to excess values of water quality parameters but poses no risk due to studied metal concentrations. [ABSTRACT FROM AUTHOR]

Sanitary landfills pose a significant threat to the environment, primarily due to the presence of leachate. The characteristics of leachate and its detrimental impact on the surrounding ecosystem necessitate a comprehensive and rigorous approach to addressing this problem. Accurate estimation of leachate volume is crucial, and one essential factor for such calculations is evapotranspiration. To calculate evapotranspiration at the „Savina Stena“ sanitary landfill, the Thornthwaite method was employed using data sourced from the FAO AQUASTAT Climate Information Tool, spanning the period from 1990 to 2020. These values were then utilized to determine the average quantity of leachate generated at the landfill. The research findings reveal that the maximum daily amount of leachate recorded is 61.82 m³, with the highest levels occurring during winter months. Specifically, the leachate production for December was calculated at 61.82 m³/day, followed by January with 50.52 m³/day and February with 47.09 m³/day. Additionally, the study presents a comparison between the evapotranspiration values derived from the Thornthwaite method and those obtained from the FAO AQUASTAT Climate Information Tool over the same 31-year period. This comparison was performed by calculating the root mean square error (RMSE) and relative error (RE). [ABSTRACT FROM AUTHOR]

In Mexico, municipalities deposit their urban solid waste (USW) in uncontrolled sites or sanitary landfills (SL); therefore, there is a need to improve their conditions and know the existing impact on air, water and soil. The elemental characterization of the leachate, soil and water was carried out, a sample of well water near the SL (1.5 km) and leachate was characterized physicochemically and microbiologically. Air quality and weather conditions were analyzed. The leachate has a high organic load, nitrogenous matter and chlorides, and a low BOD5/COD biodegradability index of 0. The concentration of air pollutants is within the permissible limits because it is an open area and the wind speed favors their dispersion. In the soil there are concentrations of retained metals that prevent their migration to groundwater. [ABSTRACT FROM AUTHOR]

As an attempt to enhance landfill capacity and extend its lifespan, this research explores the effect of slope inclination on landfill storage capacity and its implementation on the safety factors using numerical simulations. A geometric approach was used to determine the capacity change with inclination, and a new probabilistic calculation method, which accounts for the heterogeneity of waste layers, was employed to analyze the safety factor for different slope angles. Over 100 conducted calculations for each inclination were used to investigate the effect of slope variation on landfill safety. The results show that increasing inclination leads to a significant increase in landfill capacity. The safety factor results indicate that the conventional method, assuming homogenous waste, classifies 1:3 and 1:2 slopes as safe, while the new suggested method showed that a 2:3 inclination could be considered safe, especially since the calculation is not considering the safety-enhancing effect of daily cover layers. This study highlights the importance of considering the heterogeneity of waste layers in safety factor analysis, and the use of multi-layered nonhomogeneous calculation method, which provides more flexibility in design parameters. This research presents a significant step forward in constructing safe and cost-effective landfills. The use of a new probabilistic calculation method in designing landfills leads to more accurate and reliable results while maintaining safety standards. This research has important implications for the design and management of landfills and can be used as a guide for future studies in this field. [ABSTRACT FROM AUTHOR]

Copyright of Economics & Environment / Ekonomia i Środowisko is the property of Fundacja Ekonomistow Srodowiska i Zasobow Naturalnych 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.)

Municipal solid waste (MSW) generation in Bangladesh is increasing as the country is accelerating toward ever-increasing urbanization, accompanied by rapid economic expansion and population growth. Bangladesh's energy demand is also rising faster than supply. As a result, the importance of an effective waste management framework is growing in Bangladesh, and the establishment of waste-to-energy (WtE) facilities has become an absolute necessity for ensuring life quality and sustainable economic development. The purpose of this research is to assess the techno-economic viability of two distinct WtE technologies-based biogas power plants under different scenarios of Dhaka city and to encourage the development and implementation. Estimation of biogas extraction from the landfills and sewage treatment plants have been conducted and calculated the energy potential and economic viability based on the population projection of Dhaka. The optimal scenario from an energy and financial standpoint is the combined use of biogas from sewage treatment plants and landfills. This scenario resulted in an installed power generation capacity of 21 MW that is sufficient to power about 7336 residents in Dhaka. In terms of economics, the most profitable option is the isolated use of biogas sewage treatment, attributed to its high profitability index value compared to other scenarios. The findings demonstrate the potential and viability of using biogas in Dhaka, Bangladesh. [ABSTRACT FROM AUTHOR]

Municipal solid waste is one of the primary contributors to Dhaka city's severe air pollution. An investigation was conducted to assess the amount of air pollution caused by the disposal of solid waste at two landfills, six secondary transfer stations (STS), three open-air dumping sites, and one control site (Ramna Park). The average emission amounts of pollutants such as PM10, PM2.5, PM1.0, HCHO, TVOC, NO2, and CO were measured in landfills, STSs, and open-space dumping stations. The concentration of pollutants in landfills was higher than in STSs and open-air dumping sites. The STSs had the most poisonous atmospheres, as evidenced by the fact that the indoor air pollution level was much higher than the outside level. The negative correlation between distance and the pollutants indicates the inverse relationship between distance and pollutants concentrations. Landfills exhibited a PM2.5 toxicity potential of 11, double that of STSs and open-space dumping sites. The result of this study would help the policymakers to effectively design waste treatment facilities to reduce the health risk of humans. [ABSTRACT FROM AUTHOR]

The present study aimed to assess the impact of leachates from the emerging cell on the water quality of the Limón stream in Ecuador. Five sampling points were selected as references using the NTE INEN 2176:2013 standard. Subsequently, these samples were analyzed in a laboratory using the standard methods for the examination of water and wastewater for the respective physicochemical analysis. The analysis results were compared with the Unified Text of Secondary Legislation of the Ministry of the Environment, and the water quality index (WQI) was determined according to the National Sanitary Foundation (NSF). Additionally, an environmental diagnosis was conducted based on the cause-effect matrix by Leopold to propose a strategy for the restoration and ecological recovery of the affected components. According to the obtained results, the sampling points closer to the leachate discharge showed high concentrations of dissolved oxygen, iron, fecal coliforms, biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total suspended solids (TSS), which exceeded the maximum permissible limits according to legislation. This resulted in a "fair" water quality index classification according to the WQI classification. These findings highlight the importance of considering and assessing the environmental impacts. A total of 24 impacts were identified on physical, biotic, and anthropic components, with 4.76% being highly significant, 42.86% significant, and 52.38% negligible. In conclusion, the results indicate a scenario of environmental deterioration at the leachate discharge stations, urging the urgent implementation of corrective measures to address the detected high contamination. [ABSTRACT FROM AUTHOR]

Anaerobic process occurred in landfills emits substantial amount of methane (CH4) to the atmosphere. Methane is a strong greenhouse gas (GHG) as well as an ozone precursor therefore reduction of the emission would provide co-benefits on reduced climate forcing and improved air quality. Emission inventory for the base year of 2019 where the activity data were available was done using both Intergovernmental Panel on Climate Change (IPCC) and Landfill Gas Emissions Model (LandGEM) models. Emission results were compared with the flux rate measurement using close flux chamber at the landfill but for limited period. Two selected measures were proposed: biocover (biosolid) and pipe-flaring system and emission reductions were calculated. Dispersion analysis of base year methane emission was done using the Aermic Model (AERMOD) model with grids size of 0.5 x 0.5 km with a radius of 5 km from the landfill for maximum hourly, daily maximum, and annual average periods. The results of the model analysis showed that the locations exposed to the maximum concentration were within a radius of up to 1 km from the landfill to the eastern part of domain which is dominated by rice fields and residential area. High concentrations of methane over the residential areas potentially triggered the ozone formation as other local ozone precursors such as NOx and CO were potentially emitted. Meteorological factors, especially wind patterns, greatly affected the distribution pattern of CH4 in the study area. Simulations of two measures of bio-cover and pipe-flaring system were also done to investigate the impact on the methane air quality. Emission reduction of the pipe-flaring system yielded higher value as compared to the biocover therefore simulated methane also showed lower concentrations over the domain. In the near future, it is recommended that the pipe-flaring system to be installed in the landfill. [ABSTRACT FROM AUTHOR]

Landfill biogas contains large amounts of toxic and harmful impurities and may be a source of microbiological contamination of both the complex municipal waste landfill itself and adjacent territories. This paper uses modern biotechnologies designed to protect the environment to study the quantitative and qualitative composition of biogas for harmful factors, as well as for harmful substance removal from biogas. An assessment was made of air purification in the premises near landfills and adjacent territories using green plantations and a biological system based on an apparatus–biological complex for purification from microbiological contamination. The data obtained in our laboratory studies show that such apparatus–biological complexes can reduce the negative influence on the personnel and workers at operative points and on the inhabitants of adjacent territories by air purification. [ABSTRACT FROM AUTHOR]

Polycyclic aromatic hydrocarbons (PAHs) as ubiquitous pollutants can pose potential environmental and also human health risks. Therefore, this study was conducted for detecting, identifying the sources and evaluating the health risks of PAHs in topsoils in vicinity of Arad-Kouh processing and disposal complex, Tehran, Iran in 2020. In so doing, a total of 30 surface soil samples were collected from 10 sampling sites adjacent to Arad-kouh complex. After extraction of analytes, the gas chromatography/mass spectrometry (GC–MS) method was used to determine the rates of PAH compounds in surface soil samples. Based on the results obtained, the total concentrations (µg kg−1) of 16 PAHs ranged from 863 to 1384 with a mean of 1123. PAHs with 4–6 rings in their molecules with 65.3% of ∑16PAH mass dominated the PAH profiles. Molecular diagnostic ratios (MDRs) indicated that most of PAH compounds could originate from pyrogenic sources. The total incremental lifetime cancer risks (ILCRs) of PAH compounds with an average value of 4.20E-05 (ranging from 3.02E-05 to 5.23E-05), indicating a low potential carcinogenic risk of PAH compounds in the study area, especially through dermal contact. Although, the ILCRs values showed negligible adverse health effects from direct ingestion and inhalation of PAH compounds in the study area, regular and periodic monitoring of content and sources identification of PAHs in different environments and efforts to mitigate of their pollution for human health maintenance are recommended. [ABSTRACT FROM AUTHOR]

Old landfill leachate is normally rich in colloidal particles, has low organic compound, poor biodegradability and hard to be biologically treated. The suspended particles are generally dispersed, negatively charged and do not settle by gravity due to their instability and repulsion. This paper aimed to evaluate the effectiveness of SnCl4 as a positively charged coagulant in treating concentrated colour and suspended solids (SS) from an old leachate sampled at one of the local landfills in Malaysia (Alor Pongsu Landfill Site, Keria Perak), which may also represent other landfills with similar property. The mechanism and the effect of pH, zeta potential (ZP) and particle size of colloids on the reduction of the pollutants were evaluated through standard coagulation and flocculation experiment with ZP measurement. The standard jar test was examined at a pre-determined SnCl4 dosage and varied from pH 3 to pH 12. The raw leachate was found negatively charged throughout pH 3 to pH 12. Adding a positively charged SnCl4 increased the leachate surface charge to close to the point of zero charges (IEP) at pH 8 with −0.4 mV. Generally, as the pH value increase from acidic to basic condition, the raw leachate becomes more negatively charged as at higher pH values It was also found that the pH of the solution correlated with the size of the particles, where 221.3 d.nm was recorded from pH 4 to pH 11 and improved to the largest size 660 d.nm at pH 3. The highest colour and SS performance were observed at optimum pH 8 with reductions of 98.9% and 100%, respectively The reduction of repulsive forces at this pH promoted the collision of particles and thus made the aggregation possible. ZP measurement in is important as it provides an early estimation of the effective pH for the optimum coagulation and flocculation process of landfill leachate contributed by the colloidal particles. [ABSTRACT FROM AUTHOR]

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In the new hydrogen economy, bio-hydrogen derived from organic material can represent an opportunity to valorise current waste management systems. The present work deals with innovative systems for producing hydrogen from landfill gas combining Power-to-Gas plants and biogas reforming. To do so, Pressure Swing Adsorption (PSA) and Chemical Absorption (CA) have been assessed for biogas upgrading. Furthermore, both high-temperature electrolysis by SOECs (solid oxide electrolysis cell) and low-temperature electrolysis by PEM (proton exchange membrane) and Alkaline electrolysers are presented. The simulation results are compared in terms of Levelized Cost of Hydrogen (LCOH) at stack price and after compression and storage. Assuming a capacity factor equal to 70%, the potential hydrogen production rate in such hybrid configurations ranges between 26 and 28 kg H2 /h. Furthermore, the LCOH turns out to be in a range between 1.9 and 3.3 €/kg H2. Considering 2030 forecast, LCOH below 2 €/kg H2 at stack is feasible. • Green hydrogen production from landfill through power and thermal cogeneration. • Water electrolysis in low and high temperature. • Steam reforming process featuring PSA and CA. • Comprehensive technological and economic survey on the benchmark. • Comparison between ten potential hybrid energy systems in terms of LCOH. [ABSTRACT FROM AUTHOR]

• Effects of age, climate and size were studied in full-scale landfills in Portugal. • Effects of landfill age and size on leachate volume are prevalent over climate. • Ammonia compounds increase with age and size and between wet and dry seasons. • High correlations between macro inorganics and within heavy metals were found. • Two main clusters represent the early and final stages of landfill stabilization. The leachate generated by in urban waste landfills can cause environmental pollution if not controlled and treated. With different proportions of biodegradable waste, urban waste degrades over several phases in anaerobic conditions within a landfill. Using multivariate leachate data from 32 engineered landfills in Portugal, each with a similar waste composition, and all classified as non-hazardous waste landfills receiving urban waste, statistical inference was applied to categorise and deduce significant statistical differences in leachate volume and quality between landfill age, size, and climate, as well as the interactions and effects within these categories. The findings show that the effects of size and age on the leachate volume are prevalent over local, Mediterranean climate conditions; in larger landfills, waste may not be degrading as efficiently as in medium-sized landfills; hotter zones showed higher levels of COD and lower levels of BOD 5 than warmer zones, indicating increased biological activity under higher temperature conditions; TN and NH 4 -N increase significantly with age and size; Cl- also significantly increases with age, showing higher levels, along with SO 4 2-, in hotter zones as well as a concentration effect in the dry season, along with K+; heavy metals maintain levels as landfills age from intermediate to old, with only Cd2+ and Pb2+ showing significant reductions. High correlations between macro inorganics and between heavy metals were found. Cluster analysis showed two main branches, one representing the initial to intermediate stages of anaerobic degradation, and the other the interactions between leaching parameters in the later methanogenic phase of landfill stabilisation. [ABSTRACT FROM AUTHOR]

• Auto-identification proposed for construction and demenlition waste (CDW) landfill. • DeepLabv3 + stands out in semantic segmentation for CDW landfill identification. • Best model boasts 96.20% precision with an IoU of 74.60%. • There were 4 official and 48 suspected CDW landfills in Shenzhen. Dozens of landslide accidents are reported at construction and demolition waste (CDW) landfills worldwide every year. Those accidents could be avoided via timely inspection in which the identification of illegal CDW landfills at a large scale plays a critical role. Traditional field surveys are time-consuming, labor-intensive, which is not effective in large-scale detection of landfills. To address this issue, a methodology is proposed in this study for the automatic identification of CDW landfills in large-scale areas by utilizing semantic segmentation of remote sensing imagery. Deep learning is employed to achieve automatic identification and a case study is conducted to showcase the models. The results shown that: (1) The model proposed in this study can effectively identify CDW landfills, with an accuracy of 96.30 % and an IoU of 74.60 %. (2) DeepLabV3+ demonstrated superior performance over Pspnet and HRNet, though HRNet approached DeepLabV3+ in performance with appropriate optimizations. (3) Case study results indicate the potential existence of 52 CDW landfills in Shenzhen, includng 4 official landfills and 48 suspected illegal CDW landfills, mainly in Longhua, Guangming, and Baoan districts. The method proposed in this study provides an effective approache to identify large-scale illegal CDW landfills and has great significance for supervising CDW landfills. [ABSTRACT FROM AUTHOR]

Massive quantitities of waste generated by rising human population and rapid urbanisation are often disposed of into open dumps or landfills. The leachates released from these dumpsites penetrate the soil and can alter the existing biotic communities of the soil. In soil, the microbial communities are the dominant drivers which undergo changes in community structure and diversity in response to the changes in their biotic and abiotic environment. The heterogeneous waste disposed in a dumpsite or a landfill releases leachate containing nutrients along with toxic chemicals and allochthonous microorganisms in the soil. How the microbial community structure and diversity changes in a landfill or a dumpsite soil receiving leachate from it are some important questions from the perspective of microbial ecology. To unravel the community structure of bacteria inthe soil receiving dumpsite leachate and to assess the disturbance diversity relationship in this site, a comparative metagenomic analysis of the soil receiving dumpsite leachate and that of the soil of an adjacent wetland (conserved under Ramsar convention) not receiving dumpsite leachate used as the reference point was done to observe the effect of waste dumping activity on microbial diversity. The microbial diversity of the soil receiving dumpsite leachate and that of the wetland soil were found to differ significantly. Higher microbial diversity was observed in the dumpsite soil, while the wetland soil showed relative dominance of a few microbial taxa. [ABSTRACT FROM AUTHOR]

Municipal solid waste generation, management, and dumping are economic and ecological concerns that metropolitan areas, particularly those in developing nations, must address. This study intended to ascertain the impacts of solid waste on the quality of groundwater around trash dumps located inside and surrounding landfill sites in the city of Erbil. Samples of groundwater, as well as two samples of leachate, were collected from eight wells situated near landfills during the dry and rainy seasons of August 2021 and February 2022. Several physico-chemical parameters, including pH, EC, NO2, NO3, alkalinity, HCO3, Na, Ca, Mg, Cl, SAR, total hardness, and heavy metals, were evaluated in the samples. During fieldwork, water quality index (z) measurements for summer and winter were combined with longitude (x) and latitude (y) information gathered by GPS. Using the inverse distance weighting approach, integrated xyz data was interpolated in ArcMap GIS software to measure the groundwater quality of the research region. According the CCME Water Quality Index, wells 4 and 8 had WQIs ranging from fair to marginal in both the winter and summer seasons (WQI). According to the data, cadmium contents in summertime were much greater (0.430–2.066 mg. l - ) than the WHO standard (0.003 mg. l -1 ), deeming them unfit for human use. And that the high lead level in the summer (0.843- 2.600 mg. l-1 ) is caused by too many Pb batteries being thrown away. [ABSTRACT FROM AUTHOR]

With the increasing population and urbanization, the amount of municipal solid waste (MSW) is increasing day by day. As a result, problems such as odor, fire, and intense biogas formation originate from landfills. In order to detect and solve these problems, landfills should be monitored regularly. Geographic Information Systems (GIS) and Remote Sensing offer fast and practical solutions for the regular monitoring of landfills compared to field studies. In this study, Kömürcüoda landfill on the Anatolian side of İstanbul is monitored throughout 2022 with open source Landsat8/9 and Sentinel-2 satellite images. In this context, the surface temperature heterogeneity of the landfill was mapped by generating Land Surface Temperature (LST) images for the landfill from the Landsat thermal band. Points with statistically significant high - low LST values were determined with Hot Spot Analysis. The average annual LST for 2022 was calculated as 25.5 °C. It was observed that LST had the highest values during the summer season and the lowest values during the winter season. Additionally, it has been determined that there are persistent hot spots and cold spots in the landfill. This study presents a simple methodology using open source satellite data to monitor LST and detect LST abnormalities on landfills. [ABSTRACT FROM AUTHOR]

The landfill is a place used for landfill that can have a negative impact on the environment such as, causing greenhouse gas emissions, soil contamination, and groundwater pollution. Landfill gas content of CH4, CO2 and nonmethane organic compounds (NMOC) is the cause of the greenhouse effect and Global warming potential (GWP). The concentration of CH4 in landfill gas is relatively low, but CH4 causes a greenhouse effect 21 times greater than CO2. The research was conducted at the Talang Gulo landfill in Jambi City. The purpose of this study is to measure and analyze the production and amount of CH4 gas concentration emitted into the atmosphere and assess methane gas emissions as an energy source. The Application to estimate gas using models was with LandGEM-v302 software. The results of LandGEM-v302 simulation of landfill gas show a peak in 2023 of 3,194×104 Mg·year-1 for total landfill gas, methane emissions A6 (8,530×103 Mg·year-1), carbon dioxide (2,341×104 Mg year-1) and NMOC (3,667×102 Mg·year-1). The potential of methane gas as a source of fuel energy is 11,403,693.84 kg·year-1 and electrical energy is 182,862.08 kWh. [ABSTRACT FROM AUTHOR]

Over time, waste buried in landfills produces greenhouse gases (GHG) such as methane (CH4) and carbon dioxide (CO2). It is essential to know and investigate the type and amount of production of these gases from landfills as well as their effects, considering the environment's vulnerability to GHG. In the present study, the gases released from the landfill of Baft county were estimated using the landfill gas emissions model (LandGEM). CH4 production rate (k) and potential CH4 generation capacity (Lo) considering the semi-arid area for Baft county were considered 0.05 year-1 and 170 m3/Mg, respectively. According to the results, in 2054, an amount of 18703819 Mg/year of waste enters the landfill of Baft county. The emissions of landfill gases (LFG), including total landfill gas, CH4, and CO2, remained relatively constant between 2004 and 2044, followed by a period of increasing emissions until 2054. However, from that point onward, there was a decline in gas emissions that continued until 2144. In 2054, the estimated emissions for total landfill gas, CH4, CO2, and non-methane organic compounds (NMOC) are projected to be 3.043E + 05, 8.128E + 04, 2.230E + 05, and 3.493E + 03 Mg/year, respectively. Similarly, in 2144, the estimated emissions for total landfill gas, CH4, CO2, and NMOCs are projected to be 3.380E+03, 9.029E+02, 2.477E+03, and 3.881E+01 Mg/year, respectively. The potential to generate 18.25 MWh/year of electricity exists for the Baft county landfill in 2054. The study showed that a significant amount of CH4 and CO2 gases would be discharged into the atmosphere from the landfill site of Baft county, which can be recycled to help produce energy and improve air quality. [ABSTRACT FROM AUTHOR]

One of the most prevalent and serious issues afflicting developing countries is the lack of adequate space for waste disposal. Al-Gharbia Governorate, located in the middle of the Nile Delta in Egypt, suffers from random selection of sites for solid waste disposal, resulting in significant environmental challenges. The aim of this study is to determine optimal landfill locations within Al-Gharbia Governorate and validate the existing landfill sites. Four techniques of multi-criteria decision-making (MCDM) were applied to generate suitability maps for the Governorate: the analytical hierarchy procedure (AHP), ratio scale weighting (RSW), straight rank sum (SRS), and Boolean method. Eleven effective criteria were considered: groundwater, surface water, elevation, slope, soils, land use, roads, railways, urban areas, villages, and power lines. The suitability maps were categorized into four different classes: suitable, moderately suitable, low suitable, and unsuitable. The latest suitability map was determined by combining the results from the different methods, providing decision-makers with the means to select the optimal landfill site. The suitable zone encompasses a small area (3%), predominantly located in the northeast region (Al-Mahalla), central region (Tanta), and northern region (Kotour). Conversely, the unsuitable area covers a substantial portion (72.7%) due to the agricultural nature of the governorate, high population density, and elevated groundwater levels. Furthermore, all existing landfill sites fall within unsuitable or low suitable areas, inflicting severe impacts on the nearby environment, public health, and groundwater integrity. [ABSTRACT FROM AUTHOR]

Heavy metal contamination poses severe threats to ecosystems and human health, necessitating effective remediation strategies. Phytoremediation, which leverages plants to remove heavy metals, offers a promising solution. However, this approach remains underexplored, particularly in tropical ecosystems like Malaysia. Thus, this study examines the potential of native plant species in addressing heavy metal pollution, at Air Hitam Sanitary Landfill (AHSL). This location was selected due to it being an urban ecosystem that is susceptible to soil heavy metal contamination from municipal waste disposal and atmospheric deposition. Native plant species, namely Pueraria phaseoloides, Dicranopteris linearis, Cyperus rotundus, Acacia spp., and Melastoma malabathricum were found to grow well at AHSL, thus were selected for this study. The phytoremediation potential of these plant species were determined by calculating their translocation (TF) and bioaccumulation factors (BCF). Based on the TF and BCF values of all the plants studied, none of the plant species were potential phytoremediators. However, four plant species were identified as potential bioindicators of Cd. These species were Pueraria phaseoloides, Cyperus rotundus, Acacia spp. and Melastoma malabathricum. In conclusion, this study underscores the importance of understanding phytoremediation potential within challenging environments and its contribution to heavy metal mitigation. By investigating native plant species in AHSL, the research aids in expanding the application of phytoremediation strategies, ultimately fostering ecological restoration, and safeguarding human health. [ABSTRACT FROM AUTHOR]

Cadmium (Cd) is a mobile heavy metal that is highly toxic to almost all lifeforms. Urban eco-systems are susceptible to Cd contamination due to certain anthropogenic activities. Despite being recognised as an acutely toxic element, its biogeochemical behaviour is still poorly studied and understood, especially in urban ecosystems of tropical countries. Therefore, this study was undertaken to address this knowledge gap. This study was conducted at Air Hitam Sanitary Landfill (AHSL) in Puchong, Malaysia. Samples were collected from various abiotic and biotic factors representing the biogeochemical cycle, including soil, flora, arthropods, atmospheric deposition, leachates, and river water samples. Acid digestion using aqua regia was conducted to determine the total Cd concentration in all samples collected. Cd concentrations at AHSL were relatively high in all biotic and abiotic factors with the concentrations showing a range of 0.019 ppm to 1.568 ppm. The bulk of Cd contamination in the ecosystem was found to eventually end up in rivers. The average Cd concentration in the river samples exceeded several environmental guidelines. There was also evidence of Cd entering food chains via soil arthropods and plants. Thus, Cd poses a credible threat to inhabitants of tropical urban ecosystems. [ABSTRACT FROM AUTHOR]

Belle Park was established in 1973 in Kingston, Ontario, on a former landfill built on a wetland. Over the past three years, the SSHRC-funded Belle Park Project has been employing Research-Creation and community and interdisciplinary collaboration to engage with this small but highly complex space, whose most prominent feature is a totem pole carved by incarcerated Indigenous men in a local prison. The land is contaminated, but despite this the park is a rich natural habitat, and it is also the location of an encampment of unhoused people. Many existing models of harm and resistance do not capture the frictions and possibilities we experience in this site. "Belle Park Pluriverses" offers poetry and found poetry, along with photographs, to reveal and trouble binaries such as wild v. domestic, dry v. wet, beautiful v. ugly, care v. neglect, garbage v. means of life. Photos by Dorit Naaman and Laura J. Murray. [ABSTRACT FROM AUTHOR]

Waste management is a monumental environmental concern globally especially in developing countries. In Eswatini, a number of factors have prevented the implementation of effective waste management systems. Open dumping is a serious problem in Eswatini, even in regions or cities that have functioning landfills such as Mbabane and Matsapha. For Manzini city, which is the largest city in Eswatini, there is no functioning sanitary landfill; but an open dumping facility. This impairs the countrys' ability for sustainability as the environmental pillar, which is one of three sustainability pillars, is weakened. This necessitates the urgent need for a sanitary landfill, which this paper endeavoured to identify a suitable site. The study based the site selection procedure on Geographic Information System (GIS) integrated with Multi-Criteria Decision Analysis / Making (MCDA/MCDM) using the Analytic Hierarchy Process (AHP) methodology. The identified sites were then scored according to criteria weights to identify the most suitable site for a landfill location around Manzini. The study concluded that Manzini needs a landfill, as well as stating policy implications. [ABSTRACT FROM AUTHOR]

Recultivated landfills, despite remedial actions, may pose a threat to human health and the environment, and therefore require long-term monitoring. The aim of the work was to investigate the impact of recultivation treatments on changes in the physical and chemical properties of soils in the vicinity of a landfill for waste other than hazardous and neutral. In order to carry out the work, drillings were made around the tested landfill, from which samples were taken and selected physical and chemical properties were determined, including substances causing risks that are particularly important for the protection of the earth's surface. The tested soils were characterized by a neutral and alkaline reaction and a high degree of saturation of the sorption complex with exchangeable basic cations after the use of dust and ash as a recultivation material. Leaks and leachate accumulation were found in the northern part of the facility. The permissible metal contents for industrial areas (group IV) and forest areas (group III) were not exceeded. In the northern part of the landfill area, the permissible content of cadmium was exceeded, while in the southern part, the permissible content of zinc, lead and cadmium was exceeded for agricultural areas (group II). The use of dust and ashes for the recultivation of the landfill in its southern part limited the migration of pollutants deeper into the profile and resulted in an improvement in the physical and chemical properties of the tested soils. The conclusion stated that there is a need to undertake further remediation activities and monitoring studies in order to minimize potential migration of pollutants into the soil and water environment, posing a threat to human health and the environment. [ABSTRACT FROM AUTHOR]

Municipal landfills, even when controlled, are potential sources of soil and water pollution in surrounding areas, due to the migration of pollutants through water and air. This research assesses geochemical anomalies of heavy elements and rare earth elements in soils and surface waters in an adjacent area to a controlled municipal landfill near Madrid (Central Spain), under long-term operation. Twenty soil and eighteen water samples were collected in 2017 and 2018 and analyzed for this purpose. Spatial distribution and concentrations of heavy elements (Ag, Cd, Cu, Mn, Ni, Pb, Tl, and Zn) and rare Earth elements (La, Ce, and Gd) are heterogeneous and significantly higher than soil background levels, but below the legal limits to consider intervention. Accumulation of heavy and rare Earth elements in soil nearest the landfill is attributed to occur via wind and wind-driven rain transport, while their accumulation in sediments is attributed to water transport through the creeks. Surface waters show large contamination by organic and inorganic compounds and influence geochemical anomalies in sediments. The water quality is below allowable concentrations for drinking water. The combined evaluation of the soil and water samples performed in the present work is proposed as a pilot study that may be applicable to similar surrounding landfill areas worldwide. [ABSTRACT FROM AUTHOR]

In India, solid waste is deposited mostly in uncontrolled open landfills without proper segregation and handling methods. Organic wastes dumped in a landfill undergo anaerobic decomposition and emit landfill gases like methane and carbon dioxide. Landfill gases are a significant contributor to greenhouse gases and greatly impact climate change. In the interim, reducing gas emissions and controlling and recycling such gasses is important from environmental hygienic, and global perspectives. Landfill gas has tremendous potential to convert as a source of alternative fuel. The present study estimates the CH4 (Methane) and CO2 (Carbon dioxide) emissions and quantifies the renewable energy available and hydrogen production potential using the LandGEM 3.02 empirical models for the Kanuru, Vijayawada landfill. It was observed that methane emission peaked in 2042 with an emission rate according to the model was 2.51E+08 Metric tons CO2 equivalents. The gas-recovery system is an essential component in landfills for extracting energy with 75-80% efficiency; the generation rate of greenhouse gases will reduce to around 1.78E06 Mg of CO2 eq. The predicted methane emissions vary from 1.33E6-9.22E6 cu.m per year for the period of 2010- 2042. It was also estimated that annual energy production from LFG emissions was from 1.8-130 GWh per year, and hydrogen production potential was 0.6-43.3 Gg per year. The study concludes that projected scientific data will assist policymakers in creating sustainable MSW management by bridging the gap between sustainable renewable energy production and protecting the environment. The basic objectives of the study include the quantification of landfill gas production using the LandGEM model for Vijayawada, assessing the electricity generation potential of the landfill methane gas emitted, methane and carbon dioxide recovery from landfills with energy conversion could reduce GHG emissions, and estimation of hydrogen generation potential from the landfill methane emissions. [ABSTRACT FROM AUTHOR]

Landfilling and incineration are the most widely used methods for the management and treatment of fruit and vegetable waste (FVW) in Mediterranean markets, despite their potential environmental impact. A comparative life cycle assessment was conducted in this study to evaluate the environmental improvements from replacing the current landfill disposal method for FVW management and treatment in the wholesale market of Amman (Jordan) with an integrated anaerobic digestion process followed by composting. The proposed FVW treatment scenario is the best treatment option for all the assessed impact categories under the system expansion approach. Significant reductions in global warming and terrestrial ecotoxicity impacts categories would be achieved, reaching up to 322% and 352%, respectively, when compared to the current treatment scenario. Furthermore, the higher production of electrical energy (413%), as well as the production of co-products that would avoid the production of 100 kg/d of inorganic fertilizers, would contribute to such a low value of avoided impacts. [ABSTRACT FROM AUTHOR]