Modeling biogas production from organic fraction of MSW co-digested with MSWI ashes in anaerobic bioreactors.
This study aims at investigating the effects of MSW incinerator fly ash (FA) and bottom ash (BA) on the anaerobic co-digestion of OFMSW with FA or BA. It also simulates the biogas production from various dosed and control bioreactors. Results showed that suitable ashes addition (FA/MSW 10 and 20 g L(-1) and BA/MSW 100 g L(-1)) could improve the MSW anaerobic digestion and enhance the biogas production rates. FA/MSW 20 g L(-1) bioreactor had the higher biogas production and rate implying the potential option for MSW anaerobic co-digestion. Modeling studies showed that exponential plot simulated better for FA/MSW 10 g L(-1) and control bioreactors while Gaussian plot was applicable for FA/MSW 20 g L(-1) one. Linear and exponential plot of descending limb both simulated better for BA/MSW 100 g L(-1) bioreactor. Modified Gompertz plot showed higher correlation of biogas accumulation than exponential rise to maximum plot for all bioreactors.
Lo
H M
HM
Department of Environmental Engineering and Management, Chaoyang University of Technology, Taichung County, Taiwan, ROC. hmlo@cyut.edu.tw
Kurniawan
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Sillanpää
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Pai
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Chiang
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Chao
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Liu
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Chuang
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Banks
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Wang
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Lin
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Lin
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Liu
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Cheng
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Chen
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Chiu
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Wu
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D000693:Anaerobiosis; D056804:Biofuels; D019149:Bioreactors; D009930:Organic Chemicals / Q000737:chemistry*
D056804:Biofuels; D009930:Organic Chemicals