PMID- 31299605 OWN - NLM STAT- MEDLINE DCOM- 20190917 LR - 20190917 IS - 1873-2976 (Electronic) IS - 0960-8524 (Linking) VI - 290 DP - 2019 Oct TI - Effects of 2,4,6-trichlorophenol on simultaneous nitrification and denitrification: Performance, possible degradation pathway and bacterial community structure. PG - 121757 LID - S0960-8524(19)30987-3 [pii] LID - 10.1016/j.biortech.2019.121757 [doi] AB - This study aimed to investigate the effect of different 2,4,6-trichlorophenol (TCP) concentrations on the performance of simultaneous nitrification and denitrification processes established in a sequential batch biofilm reactor. And the degradation and the possible degradation pathway of 2,4,6-TCP and microbial community structure were also explored. Results indicated that 2,4,6-TCP inhibited the nitrification with the decrease in ammonium nitrogen removal. However, 2,4,6-TCP had different effects on denitrification. Nitrate accumulation showed the tendency to decrease first and then increase, whilst nitrite accumulation showed the opposite with a small change. The adaptation and recovery time of 25 mg/l 2,4,6-TCP was longest. In addition, the process had a good degradation effect on 2,4,6-TCP. Comparing the degradation of 2,4,6-TCP under different concentrations, the result showed that 2,4,6-TCP was mainly reduced to 2,4-dichlorophenol. With the increase in 2,4,6-TCP concentration, the differences in the bacterial community in the reactor were significant. CI - Copyright (c) 2019 Elsevier Ltd. All rights reserved. FAU - Tong, Na AU - Tong N AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. FAU - Yuan, Jianqi AU - Yuan J AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. FAU - Xu, Hao AU - Xu H AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. FAU - Huang, Shaobin AU - Huang S AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. Electronic address: chshuang@scut.edu.cn. FAU - Sun, Congcong AU - Sun C AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. FAU - Wen, Xiangyu AU - Wen X AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. FAU - Zhang, Yongqing AU - Zhang Y AD - School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, PR China; Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangzhou 510006, PR China. LA - eng PT - Journal Article DEP - 20190704 PL - England TA - Bioresour Technol JT - Bioresource technology JID - 9889523 RN - 0 (Chlorophenols) RN - MHS8C5BAUZ (2,4,6-trichlorophenol) RN - N762921K75 (Nitrogen) SB - IM MH - Bioreactors MH - *Chlorophenols MH - Denitrification MH - *Nitrification MH - Nitrogen OTO - NOTNLM OT - 2,4,6-Trichlorophenol OT - Bacterial community structure OT - Biodegradation OT - Simultaneous nitrification and denitrification EDAT- 2019/07/13 06:00 MHDA- 2019/09/19 06:00 CRDT- 2019/07/13 06:00 PHST- 2019/05/14 00:00 [received] PHST- 2019/07/01 00:00 [revised] PHST- 2019/07/02 00:00 [accepted] PHST- 2019/07/13 06:00 [pubmed] PHST- 2019/09/19 06:00 [medline] PHST- 2019/07/13 06:00 [entrez] AID - S0960-8524(19)30987-3 [pii] AID - 10.1016/j.biortech.2019.121757 [doi] PST - ppublish SO - Bioresour Technol. 2019 Oct;290:121757. doi: 10.1016/j.biortech.2019.121757. Epub 2019 Jul 4.