A decision support tool for landfill methane generation and gas collection

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dc.contributor.authorEmkes, Harriet
dc.contributor.authorCoulon, Frederic
dc.contributor.authorWagland, Stuart Thomas
dc.date.accessioned2016-05-25T08:43:17Z
dc.date.available2016-05-25T08:43:17Z
dc.date.issued2015-07-10
dc.description.abstractThis study presents a decision support tool (DST) to enhance methane generation at individual landfill sites. To date there is no such tool available to provide landfill decision makers with clear and simplified information to evaluate biochemical processes within a landfill site, to assess performance of gas production and to identify potential remedies to any issues. The current lack in understanding stems from the complexity of the landfill waste degradation process. Two scoring sets for landfill gas production performance are calculated with the tool: (1) methane output score which measures the deviation of the actual methane output rate at each site which the prediction generated by the first order decay model LandGEM; and (2) landfill gas indicators’ score, which measures the deviation of the landfill gas indicators from their ideal ranges for optimal methane generation conditions. Landfill gas indicators include moisture content, temperature, alkalinity, pH, BOD, COD, BOD/COD ratio, ammonia, chloride, iron and zinc. A total landfill gas indicator score is provided using multi-criteria analysis to calculate the sum of weighted scores for each indicator. The weights for each indicator are calculated using an analytical hierarchical process. The tool is tested against five real scenarios for landfill sites in UK with a range of good, average and poor landfill methane generation over a one year period (2012). An interpretation of the results is given for each scenario and recommendations are highlighted for methane output rate enhancement. Results demonstrate how the tool can help landfill managers and operators to enhance their understanding of methane generation at a site-specific level, track landfill methane generation over time, compare and rank sites, and identify problems areas within a landfill site.en_UK
dc.identifier.citationHarriet Emkes, Frédéric Coulon, Stuart Wagland, A decision support tool for landfill methane generation and gas collection, Waste Management, Volume 43, September 2015, Pages 307-318en_UK
dc.identifier.issn0956-053X
dc.identifier.urihttp://dx.doi.org/10.1016/j.wasman.2015.07.003
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/9911
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsThis is the author’s version of a work that was accepted for publication in Waste Management. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Waste Management, Volume 43, September 2015, Pages 307-318. DOI:10.1016/j.wasman.2015.07.003
dc.subjectMulti-criteria analysisen_UK
dc.subjectLandfill assessmenten_UK
dc.subjectLandfill gas indicatorsen_UK
dc.subjectMethane generationen_UK
dc.subjectWaste managementen_UK
dc.titleA decision support tool for landfill methane generation and gas collectionen_UK
dc.typeArticleen_UK

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