PMID- 32798897
OWN - NLM
STAT- MEDLINE
DCOM- 20201021
LR  - 20201021
IS  - 1879-2448 (Electronic)
IS  - 0043-1354 (Linking)
VI  - 185
DP  - 2020 Oct 15
TI  - Nitrifying biomass can retain its acclimation to 2,4,6-trichlorophenol.
PG  - 116285
LID - S0043-1354(20)30821-6 [pii]
LID - 10.1016/j.watres.2020.116285 [doi]
AB  - Many municipal wastewater treatment plants in China receive industrial wastewater 
      that contains inhibitory organic chemicals, such as chlorinated phenols. For the 
      common aerobic biological treatment, nitrification is a key step, but nitrifying 
      bacteria are notably sensitive to inhibition by chlorinated phenols. In this 
      work, normal activated sludge (containing nitrifying biomass) was acclimated to 
      2,4,6-trichlorophenol (TCP). The acclimated biomass had more than 2-fold faster 
      nitrification kinetics than normal biomass when exposed to TCP, and it also 
      achieved effective TCP removal in parallel. When suddenly exposed to TCP after as 
      much as two months without TCP input, the acclimated nitrifying biomass retained 
      effective nitrification and TCP biodegradation: The nitrification rate and TCP 
      removal rate were 0.325 mM/h and 0.049 mM/h for the acclimated biomass, compared 
      to only 0.165 mM/h and 0.001 mM/h for normal biomass. Resistance to TCP 
      inhibition also was retained for 5 generations of sub-culturing without TCP 
      exposure. High-throughput sequencing confirmed that the acclimated biomass 
      contained nitrifying bacteria and heterotrophic bacteria capable of degrading 
      TCP, although the key genera changed during sub-culturing.
CI  - Copyright (c) 2020 Elsevier Ltd. All rights reserved.
FAU - Zou, Shasha
AU  - Zou S
AD  - Department of Environmental Engineering, School of Environmental and Geographical 
      Science, Shanghai Normal University, Shanghai, 200234, PR China.
FAU - Zhang, Yongming
AU  - Zhang Y
AD  - Department of Environmental Engineering, School of Environmental and Geographical 
      Science, Shanghai Normal University, Shanghai, 200234, PR China. Electronic 
      address: zhym@shnu.edu.cn.
FAU - Chen, Fu
AU  - Chen F
AD  - Department of Environmental Engineering, School of Environmental and Geographical 
      Science, Shanghai Normal University, Shanghai, 200234, PR China. Electronic 
      address: chenfu_jeff@yeah.net.
FAU - Yu, Xiyin
AU  - Yu X
AD  - Department of Environmental Engineering, School of Environmental and Geographical 
      Science, Shanghai Normal University, Shanghai, 200234, PR China.
FAU - Wu, Xueqi
AU  - Wu X
AD  - Department of Environmental Engineering, School of Environmental and Geographical 
      Science, Shanghai Normal University, Shanghai, 200234, PR China.
FAU - Zhang, Chenyuan
AU  - Zhang C
AD  - Department of Environmental Engineering, School of Environmental and Geographical 
      Science, Shanghai Normal University, Shanghai, 200234, PR China.
FAU - Rittmann, Bruce E
AU  - Rittmann BE
AD  - Biodesign Swette Center for Environmental Biotechnology, Arizona State 
      University, Tempe, AZ85287-5701, USA.
LA  - eng
PT  - Journal Article
DEP - 20200808
PL  - England
TA  - Water Res
JT  - Water research
JID - 0105072
RN  - 0 (Chlorophenols)
RN  - 0 (Sewage)
RN  - MHS8C5BAUZ (2,4,6-trichlorophenol)
SB  - IM
MH  - Acclimatization
MH  - Biomass
MH  - Bioreactors
MH  - China
MH  - *Chlorophenols
MH  - Nitrification
MH  - Sewage
OTO - NOTNLM
OT  - 2,4,6-trichlorophenol
OT  - Acclimation
OT  - Inhibition resistance
OT  - Nitrifying bacteria
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interestsor personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/08/18 06:00
MHDA- 2020/10/22 06:00
CRDT- 2020/08/18 06:00
PHST- 2020/05/11 00:00 [received]
PHST- 2020/08/06 00:00 [revised]
PHST- 2020/08/07 00:00 [accepted]
PHST- 2020/08/18 06:00 [pubmed]
PHST- 2020/10/22 06:00 [medline]
PHST- 2020/08/18 06:00 [entrez]
AID - S0043-1354(20)30821-6 [pii]
AID - 10.1016/j.watres.2020.116285 [doi]
PST - ppublish
SO  - Water Res. 2020 Oct 15;185:116285. doi: 10.1016/j.watres.2020.116285. Epub 2020 
      Aug 8.