Accelerated acidification by inoculation with a microbial consortia in a complex open environment

被引：44

作者：

Yu, Jiadong ^{[1
]}

Zhao, Ye ^{[1
]}

Liu, Bin ^{[1
]}

Zhao, Yubin ^{[1
]}

Wu, Jingwei ^{[1
]}

Yuan, Xufeng ^{[1
]}

Zhu, Wanbin ^{[1
]}

Cui, Zongjun ^{[1
]}

机构：

[1] China Agr Univ, Coll Agron & Biotechnol, Ctr Biomass Engn, Beijing 100193, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2016年 / 216卷

关键词：

Acidification; MC1; Microbial consortia; Corn stalks; Methane production; ANAEROBIC-DIGESTION; PRETREATMENT; COMMUNITY; PERFORMANCE; CELLULOSE; GLUCOSE; METHANE; STALK; ACID;

D O I：

10.1016/j.biortech.2016.05.093

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Bioaugmentation using microbial consortia is helpful in some anaerobic digestion (AD) systems, but accelerated acidification to produce methane has not been performed effectively with corn stalks and cow dung. In this study, the thermophilic microbial consortia MC1 was inoculated into a complex open environment (unsterilized and sterilized systems) to evaluate the feasibility of bioaugmentation to improve acidification efficiency. The results indicated that MC1 itself degraded lignocellulose efficiently, and accumulated more organic acids within 3 days. Similar trends were also observed in the unsterilized system, where the hemicellulose degradation rate and organic acid concentrations increased significantly by two-fold and 20.1% (P < 0.05), respectively, and clearly reduced the loss of product. Microbial composition did not change obviously after inoculating MC1, but the abundance of members of MC1, such as Bacillus and Clostridium, increased clearly on day 3. Finally, the acidogenic fluid improved methane yield significantly (P < 0.05) via bioaugmentation. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：294 / 301

页数：8

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