PMID- 34425432
OWN - NLM
STAT- MEDLINE
DCOM- 20211209
LR  - 20211214
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 422
DP  - 2022 Jan 15
TI  - Co-removal of 2,4-dichlorophenol and nitrate using a palladized biofilm: 
      Denitrification-promoted microbial mineralization following catalytic 
      dechlorination.
PG  - 126916
LID - S0304-3894(21)01884-7 [pii]
LID - 10.1016/j.jhazmat.2021.126916 [doi]
AB  - The effects of nitrate on 2,4-dichlorophenol (2,4-DCP) dechlorination and 
      biodegradation in a hydrogen (H(2))-based palladized membrane biofilm reactor 
      (Pd-MBfR) were studied. The Pd-MBfR was created by synthesizing palladium 
      nanoparticle (Pd(0)NPs) that spontaneously associated with the biofilm to form a 
      Pd(0)-biofilm. Without input of nitrate, the Pd-MBfR had rapid and stable 
      catalytic hydrodechlorination: 93% of the 100-muM influent 2,4-DCP was 
      continuously converted to phenol, part of which was then fermented via 
      acetogenesis and methanogenesis. Introduction of nitrate enabled phenol 
      mineralization via denitrification with only a minor decrease in catalytic 
      hydrodechlorination. Phenol-degrading bacteria capable of nitrate respiration 
      were enriched in the Pd(0)-biofilm, which was dominated by the heterotrophic 
      genera Thauera and Azospira. Because the heterotrophic denitrifiers had greater 
      yields than autotrophic denitrifiers, phenol was a more favorable electron donor 
      than H(2) for denitrification. This feature facilitated phenol mineralization and 
      ameliorated denitrification inhibition of catalytic dechlorination through 
      competition for H(2). Increased nitrite loading eventually led to deterioration 
      of the dechlorination flux and selectivity toward phenol. This study documents 
      simultaneous removal of 2,4-DCP and nitrate in the Pd-MBfR and interactions 
      between the two reductions.
CI  - Copyright (c) 2021 Elsevier B.V. All rights reserved.
FAU - Wu, Chengyang
AU  - Wu C
AD  - State Key Laboratory of Pollution Control and Resource Reuse, College of 
      Environmental Science and Engineering, Tongji University, Shanghai, China; 
      Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China.
FAU - Zhou, Luman
AU  - Zhou L
AD  - State Key Laboratory of Pollution Control and Resource Reuse, College of 
      Environmental Science and Engineering, Tongji University, Shanghai, China; 
      Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China.
FAU - Zhou, Chen
AU  - Zhou C
AD  - Biodesign Swette Center for Environmental Biotechnology, Arizona State 
      University, Tempe, AZ, USA.
FAU - Zhou, Yun
AU  - Zhou Y
AD  - Huazhong Agricultural University, Wuhan, China.
FAU - Xia, Siqing
AU  - Xia S
AD  - State Key Laboratory of Pollution Control and Resource Reuse, College of 
      Environmental Science and Engineering, Tongji University, Shanghai, China; 
      Shanghai Institute of Pollution Control and Ecological Security, Shanghai, China. 
      Electronic address: siqingxia@gmail.com.
FAU - Rittmann, Bruce E
AU  - Rittmann BE
AD  - Biodesign Swette Center for Environmental Biotechnology, Arizona State 
      University, Tempe, AZ, USA.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20210818
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
RN  - 0 (Chlorophenols)
RN  - 0 (Nitrates)
RN  - 0 (Phenols)
RN  - R669TG1950 (2,4-dichlorophenol)
SB  - IM
MH  - Biofilms
MH  - Bioreactors
MH  - Chlorophenols
MH  - *Denitrification
MH  - *Nitrates
MH  - Phenols
OTO - NOTNLM
OT  - Denitrification
OT  - Hydrodechlorination
OT  - Membrane biofilm reactor
OT  - Microbial mineralization
OT  - Palladium nanoparticle
EDAT- 2021/08/24 06:00
MHDA- 2021/12/15 06:00
CRDT- 2021/08/23 20:23
PHST- 2021/06/28 00:00 [received]
PHST- 2021/08/02 00:00 [revised]
PHST- 2021/08/14 00:00 [accepted]
PHST- 2021/08/24 06:00 [pubmed]
PHST- 2021/12/15 06:00 [medline]
PHST- 2021/08/23 20:23 [entrez]
AID - S0304-3894(21)01884-7 [pii]
AID - 10.1016/j.jhazmat.2021.126916 [doi]
PST - ppublish
SO  - J Hazard Mater. 2022 Jan 15;422:126916. doi: 10.1016/j.jhazmat.2021.126916. Epub 
      2021 Aug 18.