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Frontiers of Environmental Science & Engineering

ISSN 2095-2201

ISSN 2095-221X(Online)

CN 10-1013/X

Postal Subscription Code 80-973

2018 Impact Factor: 3.883

Front.Environ.Sci.Eng.    2009, Vol. 3 Issue (3) : 313-319    https://doi.org/10.1007/s11783-009-0025-4
Research articles
Modified landfill gas generation rate model of first-order kinetics and two-stage reaction
Jiajun CHEN , Hao WANG , Na ZHANG ,
State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Beijing Normal University, Beijing 100875, China;
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Abstract This investigation was carried out to establish a new domestic landfill gas (LFG) generation rate model that takes into account the impact of leachate recirculation. The first-order kinetics and two-stage reaction (FKTSR) model of the LFG generation rate includes mechanisms of the nutrient balance for biochemical reaction in two main stages. In this study, the FKTSR model was modified by the introduction of the outflow function and the organic acid conversion coefficient in order to represent the in-situ condition of nutrient loss through leachate. Laboratory experiments were carried out to simulate the impact of leachate recirculation and verify the modified FKTSR model. The model calibration was then calculated by using the experimental data. The results suggested that the new model was in line with the experimental data. The main parameters of the modified FKTSR model, including the LFG production potential (L0), the reaction rate constant in the first stage (K1), and the reaction rate constant in the second stage (K2) of 64.746 L, 0.202 d−1, and 0.338 d−1, respectively, were comparable to the old ones of 42.069 L, 0.231 d−1, and 0.231 d−1. The new model is better able to explain the mechanisms involved in LFG generation.
Keywords landfill gas (LFG)      generation rate model      first-order kinetics      two-stage reaction      outflow function      
Issue Date: 05 September 2009
 Cite this article:   
Jiajun CHEN,Na ZHANG,Hao WANG. Modified landfill gas generation rate model of first-order kinetics and two-stage reaction[J]. Front.Environ.Sci.Eng., 2009, 3(3): 313-319.
 URL:  
https://academic.hep.com.cn/fese/EN/10.1007/s11783-009-0025-4
https://academic.hep.com.cn/fese/EN/Y2009/V3/I3/313
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