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FIRST ORDER KINETIC GAS GENERATION MODEL PARAMETERS FOR WET LANDFILLS
Citation:
REINHART, D. R., A. A. FAOUR, AND H. YOU. FIRST ORDER KINETIC GAS GENERATION MODEL PARAMETERS FOR WET LANDFILLS. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-05/072 (NTIS PB2006-100879), 2005.
Impact/Purpose:
to publish information
Description:
Landfill gas is produced as a result of a sequence of physical, chemical, and biological processes occurring within an anaerobic landfill. Landfill operators, energy recovery project owners, regulators, and energy users need to be able to project the volume of gas produced and recovered over time from a landfill. Mathematical and computer models for predicting gas yields are widely available. EPA developed a methodology for determining landfill gas generation based on the Scholl Canyon Model. EPA has provided default values for model input parameters; however, the values are based on data obtained from conventional landfills. Waste stabilization can be enhanced and accelerated so as to occur significantly more rapidly if the landfill is designed and operated as a bioreactor, primarily involving moisture addition. Enhanced waste stabilization will result in increased gas production, therefore values will be different from conventional landfills. The objective of this report was to investigate landfill gas collection from wet cells and estimate first-order gas generation model parameters. Wet cells were observed to produce more gas at a faster rate than conventional landfills, particularly after closure and more effective leachate recirculation was practiced.