Microbial Ecology in Anaerobic Digestion at Agitated and Non-Agitated Conditions

被引：24

作者：

Tian, Zhuoli ^{[1
]}

Cabrol, Lea ^{[2
]}

Ruiz-Filippi, Gonzalo ^{[2
]}

Pullammanappallil, Pratap ^{[1
]}

机构：

[1] Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA

[2] Pontificia Univ Catolica Valparaiso, Escuela Ingn Bioquim, Valparaiso, Chile

来源：

PLOS ONE | 2014年 / 9卷 / 10期

关键词：

METHANOBREVIBACTER-SMITHII; BIOHYDROGEN PRODUCTION; HYDROGEN-PRODUCTION; EMENDED DESCRIPTION; SP-NOV; PROPIONATE; DIVERSITY; WASTE; METHANOGEN; BACTERIUM;

D O I：

10.1371/journal.pone.0109769

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

To investigate the distribution and dynamics of microbial community in anaerobic digestion at agitated and non-agitated condition, 454 pyrosequencing of 16s rRNA was conducted. It revealed the distinct community compositions between the two digesters and their progressive shifting over time. Methanogens and syntrophic bacteria were found much less abundant in the agitated digester, which was mainly attributed to the presence of bacterial genera Acetanaerobacterium and Ruminococcus with relatively high abundance. The characterization of the microbial community corroborated the digestion performance affected at the agitated condition, where lower methane yield and delayed methane production rate were observed. This was further verified by the accumulation of propionic acid in the agitated digester.

引用

页数：9

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