Title: The modelling of biochemical-thermal coupling effect on gas generation and transport in MSW landfill

Authors: Liu Lei; Liang Bing; Xue Qiang; Zhao Ying; Yang Chun

Addresses: State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; Key Lab of Biogeology and Environmental Geology of Ministry of Education, China University of Geosciences, Wuhan, China. ' Department of Mechanics and Engineering Sciences, Liaoning Technical University, Fuxin Liaoning 123000, China. ' State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China. ' State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China. ' China University of Geosciences, Wuhan 430074, China

Abstract: The landfill gas generation was investigated based on the theories of the thermodynamics, microbial dynamics and chemical dynamics. The coupling model was developed for describing the gas transport and heat release. And the relationship between the gas generation rate and the temperature was proposed. The parameters in the gas generation model were obtained by bioreactor test in order to evaluate the volume of gas production of the Erfeishan landfill in China. The simulation results shown that the operating life of the landfill will be overestimated if the model does not consider the thermal effect during degradation of the solid substrate.

Keywords: landfill gas generation; gas transport; biochemical-thermal coupling; modelling; municipal solid waste; MSW; thermodynamics; microbial dynamics; chemical dynamics; heat release; China; simulation; temperature.

DOI: 10.1504/IJEP.2011.045480

International Journal of Environment and Pollution, 2011 Vol.46 No.3/4, pp.216 - 233

Received: 09 Jun 2010
Accepted: 07 Mar 2011

Published online: 13 Feb 2012 *

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