landfill modeling Articles
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Evaluation of the hazardous waste landfill cap system design and clay layer thickness criteria of the Turkish Regulation on the Control of Hazardous Waste (RCHW) using the Hydrological Evaluation of Landfill Performance (HELP) model
The hazardous waste landfill design criteria of the Turkish Regulation on the Control of Hazardous Waste (RCHW) was evaluated in this study. In the first part of the study, Hydrologic Evaluation of Landfill Performance (HELP) model was used to determine the significance of different components of the hazardous waste landfill cap system as required by the Turkish RCHW. In the second part of the ...
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Modelling methane and vinyl chloride in soil surrounding landfills
Sanitary landfilling is used in many countries as a preferred method for disposal of household wastes for reasons of simplicity and economics. Immediately following its deposition within a landfill, most of the organic fraction of waste will begin to undergo degradation through chemical and bacterial action. Landfill gas (LFG) is a product of biodegradation and consists of primarily methane ...
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Application of partially submerged bioreactor landfill for leachate management in the tropics
This research investigated the effect of leachate recirculation and storage operation in tropical landfill. Four lysimeters were operated under conventional landfill operation, leachate re-circulation, leachate storage with re-circulation and internal storage modes. Organic waste degradation, leachate quantity and characteristics and well as methane gas from each lysimeter were compared. Leachate ...
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Waste management facility expansion planning using simulation–optimisation with grey programming and penalty functions
Simulation–Optimisation (SO) techniques, which incorporate inherent system uncertainties using probability distributions, have been used for optimal waste management planning. While SO can be applied to numerous stochastic problems, its solution times vary considerably from one implementation to the next. In this study, SO has been concurrently combined with both penalty functions and a Grey ...
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Quantitative leachate estimation from a pilot-scale lysimeter study
Sanitary landfilling is the most important component of waste management. One of the main concerns is water contamination by leachate. This paper presents the outcome of the research on the water management of landfill in Nepal. The related leachate production as an effect of climatical factors is assessed. The Hydrologic Evaluation of Landfill Performance (HELP) computer model has been used to ...
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Methane emission potential of open dumps in Chennai: a case study
Monitoring of atmospheric levels of methane and other Greenhouse Gases (GHGs) holds great promise for the mitigation of global warming resulting from increasing radioactive trapping by atmospheric gases. Since, the direct measurements of landfill methane emission found to be difficult, the methane emission potential of the open dumps in Chennai has been estimated using first–order decay models ...
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Analysis of landfill components in estimating the percolated leachate to groundwater using the HELP model
Landfills are one of the groundwater pollution sources in Gaza Strip. This study focuses on two landfills operating in Gaza Strip; the first is Dear Al Balah landfill which has a lining system and the second landfill is Gaza landfill which does not have a lining system. The main objective of the present study is to assess the effect of landfill components on percolated leachate to groundwater ...
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Greenhouse gas emission potential of the municipal solid waste disposal sites in Thailand
Open dumping and landfilling are the prevalent solid waste disposal practices in Thailand. Surveys on the disposal sites revealed the presence of 95 landfills and 330 open dumps. Methane emission potential at these sites was estimated by three methods. Results of the Intergovernmental Panel on Climate Change (IPCC) method, Landfill Gas Emission model (LandGEM), and closed flux chamber technique ...
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Analysis of nanoporous membrane fouling relying on experimental observation and theoretical model for landfill leachate treatment
This paper is focused on the fouling behaviour of the ultrafiltration membrane for landfill leachate treatment. Natural organic matter fouling is considered a critical factor controlling the membrane performance. In this regard, the polyethersulphone nanoporous membrane was fabricated by phase inversion. In order to investigate the effects of operating conditions on fouling, landfilled ...
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Cost-Effective Hydrogen Sulfide Treatment Strategies for Commercial Landfill Gas Recovery: Role of Increasing C&D (Construction and Demolition) Waste
Documento sin título There are more than 350 commercial landfill gas recovery operations in the U.S. which generate electricity on-site, supply industrial gas-fired boilers, or produce substitute natural gas fuels such as CNG. Historically, very few have required H2S treatment. However, many landfills are now accepting large quantities of construction and demolition (C&D) ...
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Formulating LandGem model for estimation of landfill gas under Indian scenario
Mostly in India, solid waste without any segregation is deposited into open dumping sites. Through these sites, there is uncontrolled emission of methane and landfill gas. The landfill gas has tremendous potential in terms of converting and using them as source of fuel. The emission of landfill gas depends on types of wastes, its rate of biodegradability, its methane potential, level of ...
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The environmental impact of people-oriented MSW management
The author's research and practical experience with municipal solid waste management have shown the urgent need for new thinking models. Present paradigms are stalemate. They do not allow for flexible approaches to solving an extremely dynamic problem. This paper discusses the basic flaws in present thinking models of residents, municipal administrators and even scholars. Fundamental arguments ...
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Reduction of economic risks associated with the disposal of hazardous wastes in Hungary
Environmental risks are a growing public concern in Hungary. The threat of contaminated drinking water from abandoned and illegal hazardous waste disposal sites is receiving increased attention from citizens and from the environmental authorities. In respect to the problems of hazardous waste disposal, one of the most important objectives of Hungarian environmental policy is the enhancement of ...
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Dual role of hydrolysis coefficient in modelling of bioreactors
To the authors' knowledge, there is no published work, relating biodegradation and settlement of municipal solid waste (MSW) in bioreactor landfills together. The present mathematical model is developed to simulate the biodegradation of MSW in anaerobic bioreactor landfills and predict the strength of leachate in terms of volatile fatty acid (VFA). The hydrolysis rate constant (kh) has been found ...
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How are landfills benefiting from incorporating community engagement into their odour management strategies? Let’s find out.
First, let’s address some well-established facts related to solid waste management and odour. s widely known that waste generation is increasing at astronomical rates worldwide. Populations are growing closer to waste management operations that were previously isolated. Estimates of the next few decades show no indication of municipal solid waste generation slowing down. By 2050 ...
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