PMID- 22130085 OWN - NLM STAT- MEDLINE DCOM- 20120418 LR - 20171116 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 104 DP - 2012 Jan TI - Biotreatment of o-nitrobenzaldehyde manufacturing wastewater and changes in activated sludge flocs in a sequencing batch reactor. PG - 228-34 LID - 10.1016/j.biortech.2011.11.025 [doi] AB - o-Nitrobenzaldehyde manufacturing wastewater is characterized for being highly saline, with its TN content and dissolved organic concentrations giving rise to high COD loads. A sequencing batch reactor was established to investigate the effects of major processing variables, such as SRT and HRT, on system performance. The optimal COD (86%) and TN (40.9%) removal efficiencies were obtained at 16d (SRT) and 12 h (HRT). Design equations were developed by applying experimental data. Changes in sludge flocs were studied using a combination of methods including: chemical analysis; fluorescence in situ hybridization (FISH); and denaturing gradient gel electrophoresis profile analysis of 16S rRNA genes. Dramatic changes occurred during adaptation and beta-Proteobacteria was found to be the most prevalent population. Besides, some species affiliated with alpha-subclasses of Proteobacteria and Cytophaga-Flavobacterium-Bacteroides (CFB) group were also enriched. This study may help with future research in providing a better understanding of the activated sludge biotreatment. CI - Copyright (c) 2011 Elsevier Ltd. All rights reserved. FAU - Liu, Chang AU - Liu C AD - School of Environment and Resource Sciences, Zhejiang Agriculture and Forestry University, Linan 311300, PR China. FAU - Ali, Shinawar Waseem AU - Ali SW FAU - Guan, Li-Bo AU - Guan LB FAU - Yu, Fang-Bo AU - Yu FB FAU - Li, Shun-Peng AU - Li SP FAU - Wong, M H AU - Wong MH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111116 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Benzaldehydes) RN - 0 (Sewage) RN - 0 (Water Pollutants, Chemical) RN - 48B18Q9B8E (2-nitrobenzaldehyde) SB - IM MH - Batch Cell Culture Techniques/*instrumentation MH - Benzaldehydes/isolation & purification/*metabolism MH - Biodegradation, Environmental MH - Bioreactors/*microbiology MH - Chemical Industry MH - Equipment Design MH - Equipment Failure Analysis MH - Sewage/*chemistry/*microbiology MH - Water Pollutants, Chemical/isolation & purification/*metabolism MH - Water Purification/*instrumentation EDAT- 2011/12/02 06:00 MHDA- 2012/04/19 06:00 CRDT- 2011/12/02 06:00 PHST- 2011/10/03 00:00 [received] PHST- 2011/11/05 00:00 [revised] PHST- 2011/11/05 00:00 [accepted] PHST- 2011/12/02 06:00 [entrez] PHST- 2011/12/02 06:00 [pubmed] PHST- 2012/04/19 06:00 [medline] AID - S0960-8524(11)01636-1 [pii] AID - 10.1016/j.biortech.2011.11.025 [doi] PST - ppublish SO - Bioresour Technol. 2012 Jan;104:228-34. doi: 10.1016/j.biortech.2011.11.025. Epub 2011 Nov 16.