PMID- 30957993
OWN - NLM
STAT- MEDLINE
DCOM- 20190917
LR  - 20190917
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 53
IP  - 9
DP  - 2019 May 7
TI  - Enhanced Perfluorooctanoic Acid Degradation by Electrochemical Activation of 
      Sulfate Solution on B/N Codoped Diamond.
PG  - 5195-5201
LID - 10.1021/acs.est.8b06130 [doi]
AB  - Electrochemical oxidation based on SO(4)(*-) and (*)OH generated from sulfate 
      electrolyte is a cost-effective method for degradation of persistent organic 
      pollutants (POPs). However, sulfate activation remains a great challenge due to 
      lack of active and robust electrodes. Herein, a B/N codoped diamond (BND) 
      electrode is designed for electrochemical degradation of POPs via sulfate 
      activation. It is efficient and stable for perfluorooctanoic acid (PFOA) 
      oxidation with first-order kinetic constants of 2.4 h(-1) and total organic 
      carbon removal efficiency of 77.4% (3 h) at relatively low current density of 4 
      mA cm(-2). The good activity of BND mainly originates from a B and N codoping 
      effect. The PFOA oxidation rate at sulfate electrolyte is significantly enhanced 
      (2.3-3.4 times) compared with those at nitrate and perchlorate electrolytes. At 
      sulfate, PFOA oxidation rate decreases slightly in the presence of (*)OH quencher 
      while it declines significantly with SO(4)(*-) and (*)OH quenchers, indicate both 
      SO(4)(*-) and (*)OH contribute to PFOA oxidation but SO(4)(*-) contribution is 
      more significant. On the basis of intermediates analysis, a proposed mechanism 
      for PFOA degradation is that PFOA is oxidized to shorter chain 
      perfluorocarboxylic acids gradually by SO(4)(*-) and (*)OH until it is 
      mineralized.
FAU - Liu, Yanming
AU  - Liu Y
AUID- ORCID: 0000-0002-3498-367X
AD  - Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of 
      Education, China), School of Environmental Science and Technology , Dalian 
      University of Technology , Dalian 116024 , P. R. China.
FAU - Fan, Xinfei
AU  - Fan X
AUID- ORCID: 0000-0002-4494-5351
AD  - College of Environmental Science and Engineering , Dalian Maritime University , 
      Dalian 116024 , P. R. China.
FAU - Quan, Xie
AU  - Quan X
AUID- ORCID: 0000-0003-3085-0789
AD  - Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of 
      Education, China), School of Environmental Science and Technology , Dalian 
      University of Technology , Dalian 116024 , P. R. China.
FAU - Fan, Yaofang
AU  - Fan Y
AD  - Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of 
      Education, China), School of Environmental Science and Technology , Dalian 
      University of Technology , Dalian 116024 , P. R. China.
FAU - Chen, Shuo
AU  - Chen S
AUID- ORCID: 0000-0002-6796-8476
AD  - Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of 
      Education, China), School of Environmental Science and Technology , Dalian 
      University of Technology , Dalian 116024 , P. R. China.
FAU - Zhao, Xueyang
AU  - Zhao X
AD  - Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of 
      Education, China), School of Environmental Science and Technology , Dalian 
      University of Technology , Dalian 116024 , P. R. China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20190412
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Caprylates)
RN  - 0 (Fluorocarbons)
RN  - 0 (Sulfates)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7782-40-3 (Diamond)
RN  - 947VD76D3L (perfluorooctanoic acid)
SB  - IM
MH  - Caprylates
MH  - Diamond
MH  - Electrodes
MH  - *Fluorocarbons
MH  - Oxidation-Reduction
MH  - Sulfates
MH  - *Water Pollutants, Chemical
EDAT- 2019/04/09 06:00
MHDA- 2019/09/19 06:00
CRDT- 2019/04/09 06:00
PHST- 2019/04/09 06:00 [pubmed]
PHST- 2019/09/19 06:00 [medline]
PHST- 2019/04/09 06:00 [entrez]
AID - 10.1021/acs.est.8b06130 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2019 May 7;53(9):5195-5201. doi: 10.1021/acs.est.8b06130. 
      Epub 2019 Apr 12.