Methane production in a 100-L upflow bioreactor by anaerobic digestion of farm waste

被引：24

作者：

Borole, Abhijeet P. ^{[2
]}

Klasson, K. Thomas ^{[1
]}

Ridenour, Whitney ^{[3
]}

Holland, Justin ^{[3
]}

Karim, Khursheed ^{[4
]}

Al-Dahhan, Muthanna H. ^{[4
]}

机构：

[1] ARS, USDA, So Reg Res Ctr, New Orleans, LA 70124 USA

[2] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[3] Oak Ridge Associated Univ, Oak Ridge Inst Sci & Educ, Oak Ridge, TN 37830 USA

[4] Washington Univ, Dept Chem Engn, CREL, St Louis, MO 63130 USA

来源：

APPLIED BIOCHEMISTRY AND BIOTECHNOLOGY | 2006年 / 131卷 / 1-3期

关键词：

anaerobic digestion; animal manure; gas recirculation; mixing; biogas;

D O I：

10.1385/ABAB:131:1:887

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Manure waste from dairy farms has been used for methane production for decades, however, problems such as digester failure are routine. The problem has been investigated in small scale (1-2 L) digesters in the laboratory; however, very little scale-up to intermediate scales are available. We report production of methane in a 100-L digester and the results of an investigation into the effect of partial mixing induced by gas upflow/recirculation in the digester. The digester was operated for a period of about 70 d (with 16-d hydraulic retention time) with and without the mixing induced by gas recirculation through an internal draft tube. The results show a clear effect of mixing on digester operation. Without any mixing, the digester performance deteriorated within 30-50 d, whereas with mixing continuous production of methane was observed. This study demonstrates the importance of mixing and its critical role in design of large scale anaerobic digesters.

引用

页码：887 / 896

页数：10

共 18 条

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