PMID- 19329300 OWN - NLM STAT- MEDLINE DCOM- 20090825 LR - 20131121 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 100 IP - 14 DP - 2009 Jul TI - Effects of short solids retention time on microbial community in a membrane bioreactor. PG - 3489-96 LID - 10.1016/j.biortech.2009.02.056 [doi] AB - Effects of operating lab-scale nitrifying membrane bioreactors (MBR) at short solids retention times (SRT=3, 5 and 10d) were presented with focus on reactor performance and microbial community composition. The process was capable of achieving over 87% removal of ammonia and 95% removal of chemical oxygen demand (COD), almost regardless of SRT. The denaturing gradient gel electrophoresis (DGGE) analysis shown that bacterial communities evolved in time in a similar way at different SRT. The results of clone library analysis indicated that Betaproteobacteria was the dominant bacterial group in all the reactors but there were significant difference of species for different SRT with higher species diversity at longer SRT. Ammonia and COD removal efficiencies were not correlated with the number of bacterial species or their diversity. FAU - Duan, Liang AU - Duan L AD - State Key Laboratory of Pollution Control and Resource Reuse, Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China. FAU - Moreno-Andrade, Ivan AU - Moreno-Andrade I FAU - Huang, Chun-Lin AU - Huang CL FAU - Xia, Siqing AU - Xia S FAU - Hermanowicz, Slawomir W AU - Hermanowicz SW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090328 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Membranes, Artificial) RN - 0 (RNA, Ribosomal, 16S) RN - 0 (Sewage) RN - 7664-41-7 (Ammonia) RN - S88TT14065 (Oxygen) SB - IM MH - Ammonia/chemistry MH - Betaproteobacteria/metabolism MH - *Bioreactors MH - Biotechnology/*methods MH - Electrophoresis, Polyacrylamide Gel/methods MH - Filtration MH - Membranes, Artificial MH - Models, Theoretical MH - Oxygen/chemistry MH - Phylogeny MH - RNA, Ribosomal, 16S/chemistry MH - Sewage/chemistry/*microbiology MH - Time Factors MH - Waste Disposal, Fluid/*methods MH - *Water Microbiology EDAT- 2009/03/31 09:00 MHDA- 2009/08/26 09:00 CRDT- 2009/03/31 09:00 PHST- 2008/11/12 00:00 [received] PHST- 2009/02/24 00:00 [revised] PHST- 2009/02/27 00:00 [accepted] PHST- 2009/03/31 09:00 [entrez] PHST- 2009/03/31 09:00 [pubmed] PHST- 2009/08/26 09:00 [medline] AID - S0960-8524(09)00225-9 [pii] AID - 10.1016/j.biortech.2009.02.056 [doi] PST - ppublish SO - Bioresour Technol. 2009 Jul;100(14):3489-96. doi: 10.1016/j.biortech.2009.02.056. Epub 2009 Mar 28.