Studies on acidification in two-phase biomethanation process of municipal solid waste

被引：22

作者：

Bhattacharyya, J. K. ^{[1
]}

Kumar, Suml ^{[1
]}

Devotta, Sukumar ^{[1
]}

机构：

[1] Natl Environm Engn Res Inst, Solid Waste Management Div, Nagpur 440020, Maharashtra, India

来源：

WASTE MANAGEMENT | 2008年 / 28卷 / 01期

关键词：

D O I：

10.1016/j.wasman.2006.11.014

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Biomethanation of municipal solid waste (MSW) is a slow process and the yield of biogas is usually low. Enhancement of acidification is necessary to increase the biogas yield in biomethanation of MSW. MSW contains a significant fraction of ligno-cellulosic material. The acidification of these materials influences the biogas yield. In the present study, hydrolysis and acidification have been considered as a combined phase. Experiments have been conducted to study the effect of recirculation of leachate on the acidification stage of the twophase biomethanation process. Chemical oxygen demand (COD) and volatile fatty acid (VFA) were considered as indicator parameters. The study was also conducted to investigate the effect of using acid and alkali solution of 0.1% concentration in the acidification study. It was observed that daily recirculation of leachate does not have any major impact on the acidification process. It was also observed that treatment of MSW with sodium hydroxide yields leachate of significantly higher COD and VFA values compared to others. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：164 / 169

页数：6

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