Effect of post-digestion temperature on serial CSTR biogas reactor performance

被引：23

作者：

Boe, Kanokwan ^{[1
]}

Karakashev, Dimitar ^{[1
]}

Trably, Eric ^{[2
]}

Angelidaki, Irini ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Environm Engn, DK-2800 Lyngby, Denmark

[2] Lab Biotechnol Environm, INRA LBE UR050, F-11100 Narbonne, France

来源：

WATER RESEARCH | 2009年 / 43卷 / 03期

关键词：

Biogas; Post-digestion; Temperature; ANAEROBIC-DIGESTION; WASTE-WATER; MANURE; EFFICIENCY;

D O I：

10.1016/j.watres.2008.11.037

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of post-digestion temperature on a lab-scale serial continuous-flow stirred tank reactor (CSTR) system performance was investigated. The system consisted of a main reactor operated at 55 degrees C with hydraulic retention time (HRT) of 15 days followed by post-digestion reactors with HRT of 5.3 days. Three post-digestion temperatures (55 degrees C, 37 degrees C and 15 degrees C) were compared in terms of biogas production, process stability, microbial community and methanogenic activity, The results showed that the post-digesters operated at 55 degrees C, 37 degrees C and 15 degrees C gave extra biogas production of 11.7%, 8.4% and 1.2%, respectively. The post-digester operated at 55 degrees C had the highest biogas production and was the most stable in terms of low VFA concentrations. The specific methanogenic activity tests revealed that the main reactor and the post-digester operated at 55 degrees C and 37 degrees C had very active acidogens and methanogens, In contrast, very low methanogenic activity was observed at 15 degrees C. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：669 / 676

页数：8

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