The Experts below are selected from a list of 267 Experts worldwide ranked by ideXlab platform
Yunmin Chen - One of the best experts on this subject based on the ideXlab platform.
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Storage Capacity and Slope Stability Analysis of Municipal Solid Waste Landfills
Journal of Performance of Constructed Facilities, 2018Co-Authors: Wu Gao, Xuecheng Bian, Yunmin ChenAbstract:AbstractLandfill storage capacity and slope stability are among the most significant engineering concerns in municipal solid waste (MSW) Landfill Operation. Factors that affect the Landfill storage...
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contaminant transport in the sub surface soil of an uncontrolled Landfill site in china site investigation and two dimensional numerical analysis
Environmental Science and Pollution Research, 2016Co-Authors: Haijian Xie, Yunmin Chen, Hywel Rhys Thomas, Majid Sedighi, Shakil A Masum, Qihua RanAbstract:A field investigation of contaminant transport beneath and around an uncontrolled Landfill site in Huainan in China is presented in this paper. The research aimed at studying the migration of some chemicals present in the Landfill leachate into the surrounding clayey soils after 17 years of Landfill Operation. The concentrations of chloride and sodium ions in the pore water of soil samples collected at depths up to 15 m were obtained through an extensive site investigation. The contents of organic matter in the soil samples were also determined. A two-dimensional numerical study of the reactive transport of sodium and chloride ion in the soil strata beneath and outside the Landfill is also presented. The numerical modelling approach adopted is based on finite element/finite difference techniques. The domain size of approximately 300 × 30 m has been analysed and major chemical transport parameters/mechanisms are established via a series of calibration exercises. Numerical simulations were then performed to predict the long-term behaviour of the Landfill in relation to the chemicals studied. The lateral migration distance of the chloride ions was more than 40 m which indicates that the advection and mechanical dispersion are the dominant mechanism controlling the contaminant transport at this site. The results obtained from the analysis of chloride and sodium migration also indicated a non-uniform advective flow regime of ions with depth, which were localised in the first few metres of the soil beneath the disposal site. The results of long-term simulations of contaminant transport indicated that the concentrations of ions can be 10 to 30 times larger than that related to the allowable limit of concentration values. The results of this study may be of application and interest in the assessment of potential groundwater and soil contamination at this site with a late Pleistocene clayey soil. The obtained transport properties of the soils and the contaminant transport mechanisms can also be used for the design of engineered barriers for the control of the long-term pollution of the site.
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Development Of A Computer Software For Predicting Landfill Settlement and Its Storage Capacity
Advances in Environmental Geotechnics, 2010Co-Authors: Yao-shang Wang, Tony L. T. Zhan, Xue-chen Bian, Yunmin ChenAbstract:Settlement is one of the most obvious phenomenon of MSW Landfills. The prediction of settlement is very important for Landfill Operation, management and post-closure reclamation. This paper gives a brief introduction to the development of a computer software for predicting Landfill settlement and capacity throughout the Landfill life. The overall structure and main features of the computer software are presented. An illustrative analysis is used to demonstrate the functions of the software.
Ioannis M. Dokas - One of the best experts on this subject based on the ideXlab platform.
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Early warning and emergency response of Landfill
2009Co-Authors: Ioannis M. Dokas, Dimitrios A. Karras, Demetrios PanagiotakopoulosAbstract:In this paper we argue that early warning systems for engineering facilities can be developed by combining and integrating existing technologies and theories. As example, we present an efficient integration of fuzzy expert systems, fault tree analysis and World Wide Web technologies to their application in the development of the Landfill Operation Management Advisor (LOMA), a novel early warning and emergency response system for solid waste Landfill Operations. The aim of LOMA is to provide assistance to Landfill managers on their efforts in preventing accidents and Operational problems and to help them to develop emergency response plans if these Operational problems shall occur. Additional aim is to disseminate information and knowledge to the public on Landfill
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Early warning and emergency response of Landfill Operations
2009Co-Authors: Ioannis M. Dokas, Dimitrios A. Karras, Demetrios PanagiotakopoulosAbstract:In this paper we argue that early warning systems for engineering facilities can be developed by combining and integrating existing technologies and theories. As example, we present an efficient integration of fuzzy expert systems, fault tree analysis and World Wide Web technologies to their application in the development of the Landfill Operation Management Advisor (LOMA), a novel early warning and emergency response system for solid waste Landfill Operations. The aim of LOMA is to provide assistance to Landfill managers on their efforts in preventing accidents and Operational problems and to help them to develop emergency response plans if these Operational problems shall occur. Additional aim is to disseminate information and knowledge to the public on Landfill
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fault tree analysis and fuzzy expert systems early warning and emergency response of Landfill Operations
Environmental Modelling and Software, 2009Co-Authors: Ioannis M. Dokas, Dimitrios A. Karras, Demetrios PanagiotakopoulosAbstract:In this paper we argue that Early Warning Systems for engineering facilities can be developed by combining and integrating existing technologies and theories. As example, we present an efficient integration of fuzzy expert systems, fault tree analysis and Worldwide Web technologies to their application in the development of the Landfill Operation Management Advisor (LOMA), a novel early warning and emergency response system for solid waste Landfill Operations. The aim of LOMA is to provide assistance to Landfill managers on their efforts in preventing accidents and Operational problems and to help them to develop emergency response plans if these Operational problems shall occur. Additional aim is to disseminate information and knowledge to the public on Landfill Operational problems and their adverse effects. This aim is related to solid waste organizations that have to accord with legislations which are similar to the European Union's EC Directive (2003/4/EC) on Public Access to Environmental Information. When using LOMA, the user first describes the working conditions at the Landfill. Then, based on this description, LOMA informs user about the potential Operational problems. Afterwards, it analyzes the Operational problems in more detail and it estimates the possibility of their occurrence. Finally, it provides advice on how to prevent them and how to respond if any of them occurs. This paper thoroughly investigates LOMA development as well as its integral methodologies and validates it by outlining its performance in test cases that were performed by experts during the Operation of a real Landfill as well as in test cases extracted from a specially constructed database with synthetic events.
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ITEE - Developing Web Sites For Web Based Expert Systems: A Web Engineering Approach.
2005Co-Authors: Ioannis M. DokasAbstract:This paper presents a developing process for Web based expert systems and specifically focuses on the developing process of their corresponding Web sites. As a case study, the architecture of a Web site/application, which includes the Landfill Operation Management Advisor (LOMA) expert system, will be presented. The Web site/application is available at http://loma.civil.duth.gr since November 2002. Based on the gained experience, useful tips will be given on the construction of such Web sites/applications. Moreover, some explanations will be recorded supporting the assertion that Web based expert systems can be considered as a category of Web engineering applications.
Rasyidah Alrozi - One of the best experts on this subject based on the ideXlab platform.
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An overview of municipal solid waste management and Landfill leachate treatment: Malaysia and Asian perspectives
Environmental Science and Pollution Research, 2017Co-Authors: Mohamad Anuar Kamaruddin, Mohd Suffian Yusoff, Lo Ming Rui, Awatif Md Isa, Mohd Hafiz Zawawi, Rasyidah AlroziAbstract:Currently, generation of solid waste per capita in Malaysia is about 1.1 kg/day. Over 26,500 t of solid waste is disposed almost solely through 166 operating Landfills in the country every day. Despite the availability of other disposal methods, Landfill is the most widely accepted and prevalent method for municipal solid waste (MSW) disposal in developing countries, including Malaysia. This is mainly ascribed to its inherent forte in terms cost saving and simpler Operational mechanism. However, there is a downside. Environmental pollution caused by the Landfill leachate has been one of the typical dilemmas of Landfilling method. Leachate is the liquid produced when water percolates through solid waste and contains dissolved or suspended materials from various disposed materials and biodecomposition processes. It is often a high-strength wastewater with extreme pH, chemical oxygen demand (COD), biochemical oxygen demand (BOD), inorganic salts and toxicity. Its composition differs over the time and space within a particular Landfill, influenced by a broad spectrum of factors, namely waste composition, Landfilling practice (solid waste contouring and compacting), local climatic conditions, Landfill’s physico-chemical conditions, biogeochemistry and Landfill age. This paper summarises an overview of Landfill Operation and leachate treatment availability reported in literature: a broad spectrum of Landfill management opportunity, leachate parameter discussions and the way forward of Landfill leachate treatment applicability.
Demetrios Panagiotakopoulos - One of the best experts on this subject based on the ideXlab platform.
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Early warning and emergency response of Landfill Operations
2009Co-Authors: Ioannis M. Dokas, Dimitrios A. Karras, Demetrios PanagiotakopoulosAbstract:In this paper we argue that early warning systems for engineering facilities can be developed by combining and integrating existing technologies and theories. As example, we present an efficient integration of fuzzy expert systems, fault tree analysis and World Wide Web technologies to their application in the development of the Landfill Operation Management Advisor (LOMA), a novel early warning and emergency response system for solid waste Landfill Operations. The aim of LOMA is to provide assistance to Landfill managers on their efforts in preventing accidents and Operational problems and to help them to develop emergency response plans if these Operational problems shall occur. Additional aim is to disseminate information and knowledge to the public on Landfill
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Early warning and emergency response of Landfill
2009Co-Authors: Ioannis M. Dokas, Dimitrios A. Karras, Demetrios PanagiotakopoulosAbstract:In this paper we argue that early warning systems for engineering facilities can be developed by combining and integrating existing technologies and theories. As example, we present an efficient integration of fuzzy expert systems, fault tree analysis and World Wide Web technologies to their application in the development of the Landfill Operation Management Advisor (LOMA), a novel early warning and emergency response system for solid waste Landfill Operations. The aim of LOMA is to provide assistance to Landfill managers on their efforts in preventing accidents and Operational problems and to help them to develop emergency response plans if these Operational problems shall occur. Additional aim is to disseminate information and knowledge to the public on Landfill
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fault tree analysis and fuzzy expert systems early warning and emergency response of Landfill Operations
Environmental Modelling and Software, 2009Co-Authors: Ioannis M. Dokas, Dimitrios A. Karras, Demetrios PanagiotakopoulosAbstract:In this paper we argue that Early Warning Systems for engineering facilities can be developed by combining and integrating existing technologies and theories. As example, we present an efficient integration of fuzzy expert systems, fault tree analysis and Worldwide Web technologies to their application in the development of the Landfill Operation Management Advisor (LOMA), a novel early warning and emergency response system for solid waste Landfill Operations. The aim of LOMA is to provide assistance to Landfill managers on their efforts in preventing accidents and Operational problems and to help them to develop emergency response plans if these Operational problems shall occur. Additional aim is to disseminate information and knowledge to the public on Landfill Operational problems and their adverse effects. This aim is related to solid waste organizations that have to accord with legislations which are similar to the European Union's EC Directive (2003/4/EC) on Public Access to Environmental Information. When using LOMA, the user first describes the working conditions at the Landfill. Then, based on this description, LOMA informs user about the potential Operational problems. Afterwards, it analyzes the Operational problems in more detail and it estimates the possibility of their occurrence. Finally, it provides advice on how to prevent them and how to respond if any of them occurs. This paper thoroughly investigates LOMA development as well as its integral methodologies and validates it by outlining its performance in test cases that were performed by experts during the Operation of a real Landfill as well as in test cases extracted from a specially constructed database with synthetic events.
Telemachus C Koliopoulos - One of the best experts on this subject based on the ideXlab platform.
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leachate emissions at mid auchencarroch experimental site environmental impact assessment efficient spatial analysis utilizing remote sensing and digital image processing software for leachate monitoring
2008Co-Authors: Telemachus C KoliopoulosAbstract:This paper combines and analyzes characteristic chemical indexes of the biological waste biodegradation at Landfill sites in terms of Landfill bioreactor leachate emissions, total organic carbon and pH magnitudes, which are produced at Mid Auchencarroch experimental Landfill bioreactor cells with different disposed waste composition and dynamic solid waste management biotechnology techniques. Moreover, in the end is presented a useful and efficient digital image processing computer software for Landfill leachate emissions monitoring; Landfill Operation; and investigation the magnitude of a probable leachate chemical accident next to Landfill boundaries or image processing recognition of uncontrolled sites. This paper examines Landfill gas emissions based on characteristic field data from Mid Auchencarroch experimental site. Useful conclusions are presented for efficient solid waste management units so as to avoid associated risks to any surrounded land uses next to Landfill boundaries.
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A diagnostic model for M.S.W. Landfill Operation and the protection of ecosystems with a spatial multiple criteria analysis—Zakynthos Island, Greece
Ecosytems and Sustainable Development VI, 2007Co-Authors: Telemachus C Koliopoulos, G. KoliopoulouAbstract:Sanitary Landfills remain an attractive disposal route for municipal solid waste, because it is more economical than alternative solutions. The produced Landfill emissions by waste biodegradation could be exploited after treatment as renewable resources. In this paper the experimental design of Mid Auchencarroch Landfill is taken into account, which is a UK Environment Agency and industry funded research facility. The relative magnitudes of pollution load in time by Landfill gas and leachate emissions are considered, making useful conclusions for the Operation of future sustainable integrated waste management systems and associated regional sustainable development protecting ecosystems and public health.
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a diagnostic model for m s w Landfill Operation and the protection of ecosystems with a spatial multiple criteria analysis zakynthos island greece
Sixth International Conference on Ecosystems and Sustainable Development Coimbra Portugal September 2007., 2007Co-Authors: Telemachus C Koliopoulos, G. KoliopoulouAbstract:Sanitary Landfills remain an attractive disposal route for municipal solid waste, because it is more economical than alternative solutions. The produced Landfill emissions by waste biodegradation could be exploited after treatment as renewable resources. In this paper the experimental design of Mid Auchencarroch Landfill is taken into account, which is a UK Environment Agency and industry funded research facility. The relative magnitudes of pollution load in time by Landfill gas and leachate emissions are considered, making useful conclusions for the Operation of future sustainable integrated waste management systems and associated regional sustainable development protecting ecosystems and public health.
