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	Digestibility improvement of sorted waste with alkaline hydrothermal pretreatment
	Wang Hao ; Wang Hongtao ; Lu Wenjing ; Zhao Yan
	2010-10-12 ; 2010-10-12
关键词	Practical/ biofuel biotechnology waste handling/ sorted municipal solid waste digestibility alkaline hydrothermal pretreatment anaerobic digestion biogas production dilute alkali solution hydrolysis biochemical methane potential mesophilic anaerobic condition chemical oxygen demand concentration kitchen garbage leaves temperature 170 C time 1 h time 6 day temperature 130 C/ E0230 Environmental issues E1525 Industrial processes E3624 Fuel processing industry E3628 Biotechnology industry E1780 Products and commodities E2120 Heat and thermodynamic processes (mechanical engineering)/ temperature 4.4315E+02 K time 3.6E+03 s time 5.184E+05 s temperature 4.0315E+02 K
中文摘要	The digestibility of sorted municipal solid waste (MSW) is often limited by the high content of structured green waste. The objectives of this study are to investigate the effect of alkaline hydrothermal pretreatment on the anaerobic digestion of sorted waste and to analyze the biogas production of different parts of the waste. The waste was hydrothermally pretreated in a dilute alkali solution. The hydrolysis product was then incubated in a 500 mL saline bottle to determine the biochemical methane potential (BMP) under mesophilic anaerobic conditions. The optimum hydrothermal condition was 170 degrees C at 4 g NaOH/100 g solid for one hour. The concentration of chemical oxygen demand (COD) was 13 936 mg/L and the methane yield was 164 mL/g volatile solid (VS) for 6 days incubation at the optimum conditions. The biogas production was increased more than 50% over the control, with the methane conversion ratio on a carbon basis enhanced to 30.6%. The organic part of the sorted waste was mainly kitchen garbage and leaves. Model kitchen garbage completely liquified at 130 degrees C for one hour had a methane yield of 276 mL/g VS. The alkali addition slightly enhanced the hydrolyzation rate and methane yield. The biogas potential of leaves was improved by pretreatment at above 150 degrees C under alkaline conditions.
语种	英语
出版者	Tsinghua University Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79843]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Hao,Wang Hongtao,Lu Wenjing,et al. Digestibility improvement of sorted waste with alkaline hydrothermal pretreatment[J],2010, 2010.
APA	Wang Hao,Wang Hongtao,Lu Wenjing,&Zhao Yan.(2010).Digestibility improvement of sorted waste with alkaline hydrothermal pretreatment..
MLA	Wang Hao,et al."Digestibility improvement of sorted waste with alkaline hydrothermal pretreatment".(2010).

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