Anaerobic mesophilic co-digestion of rice straw and swine manure

被引：0

作者：

Li, Dong ^{[1
,2
]}

Ye, Jingqing ^{[1
]}

Sun, Yongming ^{[1
]}

Zhen, Feng ^{[1
]}

Li, Lianhua ^{[1
]}

Yuan, Zhenhong ^{[1
]}

Kong, Xiaoying ^{[1
]}

机构：

[1] Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences

[2] Key Laboratory of Renewable Energy and Gas Hydrate, Chinese Academy of Sciences

来源：

Tongji Daxue Xuebao/Journal of Tongji University | 2012年 / 40卷 / SUPPL.2期

关键词：

Anaerobic co-digestion; Methane concentration; Methane yield; Rice straw; Swine manure;

D O I：

10.3969/j.issn.0253-374x.2012.s2.013

中图分类号：

学科分类号：

摘要：

Anaerobic mesophilic (37°C) co-digestions were carried out at initial volatile solid (VS) concentration of 6% using rice straw and swine manure as materials. The effect of rice straw and swine manure VS ratio (0:1, 1:2, 1:1, 2:1, 1:0) on anaerobic digestion was investigated. The results showed that no inhibitions of volatile fatty acids (VFAs) and ammonia were found for all digestions with pH at 6.8~7.8.Compared with single digestion of rice straw, co-digestion with swine manure can significantly increase biogas and methane yields. Methane yields were 253.86, 268.10, 267.23, 241.23 and 178.03 ml per gram VS for VS ratio of 0:1, 1:2, 1:1, 2:1, 1:0. Average methane concentrations were 54.3%, 56.0%, 55.8%, 53.9% and 50.1% respectively. When the ratio of carbon to nitrogen of substrates were between 14.0~47.5, the ratios of actual value and theoretical value (Ya/Ym) was increased and then decreased for biogas and methane yields with maximum Ya/Ym at the ratio of carbon to nitrogen of 23.4. For engineering application, the rice straw and swine manure VS ration of 1:1 or the ratio of carbon to nitrogen of 23.4 for mixed materials was recommended. And designed retention time and biogas yield were 20 day and 435 ml per gram VS.

引用

页码：59 / 65

页数：6

共 21 条

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