Microbial community analysis of bulk sludge/cake layers and biofouling-causing microbial consortia in a full-scale aerobic membrane bioreactor

被引：67
作者：
Choi, Jeongdong [1 ]
Kim, Eun-Sik [2 ]
Ahn, Youngho [3 ]
机构：
[1] Korea Natl Univ Transportat, Dept Environm Engn, Chungju 27469, South Korea
[2] Chonnam Natl Univ, Dept Environm Syst Engn, Yeosu 59626, South Korea
[3] Yeungnam Univ, Dept Civil Engn, Gyongsan 38541, South Korea
来源：
BIORESOURCE TECHNOLOGY | 2017年 / 227卷
基金：
新加坡国家研究基金会;
关键词：
Membrane bioreactor; Biofouling; Microbial community analysis; Pyrosequencing; WATER TREATMENT PLANTS; WASTE-WATER; ACTIVATED-SLUDGE; BACTERIAL COMMUNITY; PHOSPHORUS REMOVAL; ANTIBIOTIC-RESISTANCE; PERFORMANCE; REACTOR; DIVERSITY; POPULATION;
D O I：
10.1016/j.biortech.2016.12.056
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Pyrosequencing was used to investigate biofouling-causing microbial consortia at the community level in bulk sludge and cake layers within a full-scale membrane bioreactor (MBR). The analysis revealed Chao's estimates of total operational taxonomic units (OTUs) of 1726, 1806, and 1362 for bulk sludge, cake outer layer, and cake inner layer, respectively. The bulk sludge and cake outer layer OTUs clustered together, whereas the cake inner layer OTUs formed a separate group, indicating that environmental conditions affected the microbial community composition within the MBR. Bacteroidetes, Proteobacteria, and Chloroflexi were the dominant phyla in both the bulk sludge and the cake layers. Comparison at the genus level showed twelve distinct genera in the cake layers that were absent in bulk sludge. Twenty distinct genera were recorded in the inner cake layer. Those genera are likely the microbial colonization pioneers in full-scale membrane bioreactors. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：133 / 141
页数：9
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