Modeling and simulation of landfill gas production from pretreated MSW landfill simulator

doi:10.1007/s11783-014-0685-6

Front. Environ. Sci. Eng.

2016, Vol. 10

Issue (1) : 159-167 https://doi.org/10.1007/s11783-014-0685-6

RESEARCH ARTICLE

Modeling and simulation of landfill gas production from pretreated MSW landfill simulator

Rasool Bux MAHAR¹(

), Abdul Razaque SAHITO², Dongbei YUE³, Kamranullah KHAN⁴

¹. Institute of Environmental Engineering & Management, Mehran University of Engineering & Technology Jamshoro, Sindh 76062, Pakistan
². Department of Mechanical Engineering, Mehran University of Engineering & Technology Jamshoro, Sindh 76062, Pakistan
³. School of Environment, Tsinghua University, Beijing 100084, China
⁴. Pakistan Institute of Engineering and Applied Sciences, P.O. Nilore, Islamabad 76132, Pakistan

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Abstract

The cumulative landfill gas (LFG) production and its rate were simulated for pretreated municipal solid waste (MSW) landfill using four models namely first order exponential model, modified Gompertz model, single component combined growth and decay model and Gaussian function. Considering the behavior of the pretreated MSW landfill, a new multi component model was based on biochemical processes that occurring in landfilled pretreated MSW. The model was developed on the basis of single component combined growth and decay model using an anaerobic landfill simulator reactor which treats the pretreated MSW. It includes three components of the degradation i.e. quickly degradable, moderately degradable and slowly degradable. Moreover, the developed model was statistically analyzed for its goodness of fit. The results show that the multi components LFG production model is more suitable in comparison to the simulated models and can efficiently be used as a modeling tool for pretreated MSW landfills. The proposed model is likely to give assistance in sizing of LFG collection system, generates speedy results at lower cost, improves cost-benefit analysis and decreases LFG project risk. It also indicates the stabilization of the landfill and helps the managers in the reuse of the landfill space. The proposed model is limited to aerobically pretreated MSW landfill and also requires the values of delay times in LFG productions from moderately and slowly degradable fractions of pretreated MSW.

Keywords combine growth and decay model pretreated municipal solid waste (MSW) multi component landfill gas (LFG) model

Corresponding Author(s): Rasool Bux MAHAR

Online First Date: 11 April 2014 Issue Date: 03 December 2015

Cite this article:

Rasool Bux MAHAR,Abdul Razaque SAHITO,Dongbei YUE, et al. Modeling and simulation of landfill gas production from pretreated MSW landfill simulator[J]. Front. Environ. Sci. Eng., 2016, 10(1): 159-167.

URL:

https://academic.hep.com.cn/fese/EN/10.1007/s11783-014-0685-6
https://academic.hep.com.cn/fese/EN/Y2016/V10/I1/159

Fig.1 Composition of untreated MSW of Beishenshu landfill Beijing, China (% TS)

Tab.1 Characteristics of pretreated MSW by natural convection of air

Fig.2 Sectional view of ALSR

Fig.3 Combined growth and decay function (A = 1.7?kg·day⁻² and k = 0.07?year⁻¹)

Fig.4 Cumulative LFG and its production rate through ALSR

Fig.5 Cumulative LFG production (a) first order exponential model and (b) modified Gompertz model

Fig.6 LFG production rate (a) combined growth and decay model and (b) Gaussian function

Fig.7 Multi component combined growth and decay LFG production model versus experimental data

Tab.2 Model parameters and statistical analysis of LFG production models of pretreated MSW

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