PMID- 20608499
OWN - NLM
STAT- MEDLINE
DCOM- 20100804
LR  - 20190911
IS  - 1001-0742 (Print)
IS  - 1001-0742 (Linking)
VI  - 22
IP  - 5
DP  - 2010
TI  - Microbial community structure in an integrated A/O reactor treating diluted 
      livestock wastewater during start-up period.
PG  - 656-62
AB  - In order to investigate the correlation between reactor performance and the 
      microorganisms, an integrated NO reactor was operated for 72 days to treat 
      diluted livestock wastewater. Chemical oxygen demand (COD) removal efficiency 
      increased from 79% to 94%, with total nitrogen (TN) removal efficiency from 37% 
      to 50% (HRT 7.4 br) when the influent COD and TN were ca. 1500 mg/L and 95 mg/L, 
      respectively, and the outlet COD concentration was less than 100 mg/L at the end. 
      Microbial community was monitored during start-up period by denaturing gradient 
      gel electrophoresis (DGGE) based on 16S rRNA gene. DGGE profiles showed that 
      microbial community had changed significantly during the start-up and these 
      shifts were in accordance with the reactor performance. UPGMA clustering analysis 
      showed that 14 anaerobic samples fell into five main groups and so did the 
      aerobic ones, but the grouping patterns were different. Phylogenetic analysis 
      indicated that microbial populations in the anaerobic compartment belonged to 
      Firmicutes, Proteobacteria, Chioroflexi and Bacteroidetes, while Proteobacteria, 
      Bacteroidetes, Firmicutes, Verrucomicrobiae and Nitrospira were present in the 
      aerobic compartment. In the anaerobic compartment, more fermentative and 
      acetogenic bacteria were detected during the start-up while denitrifying bacteria 
      faded away. Two functional populations such as Nitrospira defluvii and 
      Dechioromonas denitnficans were observed when nitrogen removal was high, 
      indicating that simultaneous nitrification and denitrification occurred in the 
      aerobic compartment.
FAU - Ren, Lijiao
AU  - Ren L
AD  - State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of 
      Technology, Harbin 150090, China. renlijiao0436105@163.com
FAU - Wu, Yining
AU  - Wu Y
FAU - Ren, Nanqi
AU  - Ren N
FAU - Zhang, Kun
AU  - Zhang K
FAU - Xing, Defeng
AU  - Xing D
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - J Environ Sci (China)
JT  - Journal of environmental sciences (China)
JID - 100967627
RN  - 0 (RNA, Ribosomal, 16S)
RN  - 0 (Sewage)
RN  - N762921K75 (Nitrogen)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Anaerobiosis
MH  - Animals
MH  - Animals, Domestic/*microbiology
MH  - Bacteria/*classification/genetics/*isolation & purification
MH  - Base Sequence
MH  - Bioreactors/*microbiology
MH  - Electrophoresis, Agar Gel
MH  - Nitrogen/isolation & purification
MH  - Oxygen/isolation & purification
MH  - Phylogeny
MH  - RNA, Ribosomal, 16S/genetics
MH  - Sewage/microbiology
MH  - Waste Disposal, Fluid/*instrumentation
MH  - Water Purification/*instrumentation
EDAT- 2010/07/09 06:00
MHDA- 2010/08/05 06:00
CRDT- 2010/07/09 06:00
PHST- 2010/07/09 06:00 [entrez]
PHST- 2010/07/09 06:00 [pubmed]
PHST- 2010/08/05 06:00 [medline]
AID - 10.1016/s1001-0742(09)60159-5 [doi]
PST - ppublish
SO  - J Environ Sci (China). 2010;22(5):656-62. doi: 10.1016/s1001-0742(09)60159-5.