PMID- 33264854
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20210304
LR  - 20210304
IS  - 1873-3336 (Electronic)
IS  - 0304-3894 (Linking)
VI  - 403
DP  - 2021 Feb 5
TI  - Electrochemical oxidation of PFOA and PFOS in landfill leachates at low and 
      highly boron-doped diamond electrodes.
PG  - 123606
LID - S0304-3894(20)31592-2 [pii]
LID - 10.1016/j.jhazmat.2020.123606 [doi]
AB  - Polyfluorinated alkyl substances (PFASs) may reach landfill leachates (LLs) due 
      to improper waste management. In this study perfluorooctanoate (PFOA) and 
      perfluorooctane sulphonate (PFOS) were used as representatives of PFASs in the 
      decomposition on boron-doped diamond electrodes (BDDs) with high (10k ppm) and 
      low (0.5k ppm) boron doping concentrations. The result shows that although better 
      COD removal efficacies are obtained on the low-doped BDD (59 % after 8 h), the 
      decomposition rate of PFOA and PFOS was not affected by boron doping. In LLs, at 
      the current density of 75 mA/cm(2), averaged removal efficiencies of 80 % and 78 
      % were achieved for PFOA and PFOS, respectively. But besides concentration of 
      mother compounds, the presence of intermediates during electrolysis should be 
      monitored. After 8 h of LL electrolysis, the presence of long-chain degradates 
      C(6)F(13) and C(6)F(13)COO(-) was still observed only in 10k BDD-PFOA assays, 
      while during 0.5k assays C(6)F(13) and C(6)F(13)COO(-) form more intesively at 
      the beginning of the process. This indirectly confirms the more intensive 
      generation of perfluoroalkoxy and hydroxyl radicals and higher susceptibility to 
      electrolysis of PFOA's long-chain intermediates on 0.5k BDD. This is the first 
      study reporting BDD-electrolysis as promising in PFAS removal from the complex 
      matrix of LLs, despite the oxidation of competing LLs components.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Pierpaoli, Mattia
AU  - Pierpaoli M
AD  - Department of Metrology and Optoelectronics, Faculty of Electronics, 
      Telecommunication and Informatics, Gdansk University of Technology, Gdansk 
      80-233, Poland. Electronic address: mattia.pierpaoli@pg.edu.pl.
FAU - Szopinska, Malgorzata
AU  - Szopinska M
AD  - Department of Water and Wastewater Technology, Faculty of Civil and Environmental 
      Engineering, Gdansk University of Technology, Gdansk 80-233, Poland.
FAU - Wilk, Barbara K
AU  - Wilk BK
AD  - Department of Water and Wastewater Technology, Faculty of Civil and Environmental 
      Engineering, Gdansk University of Technology, Gdansk 80-233, Poland.
FAU - Sobaszek, Michal
AU  - Sobaszek M
AD  - Department of Metrology and Optoelectronics, Faculty of Electronics, 
      Telecommunication and Informatics, Gdansk University of Technology, Gdansk 
      80-233, Poland.
FAU - Luczkiewicz, Aneta
AU  - Luczkiewicz A
AD  - Department of Water and Wastewater Technology, Faculty of Civil and Environmental 
      Engineering, Gdansk University of Technology, Gdansk 80-233, Poland.
FAU - Bogdanowicz, Robert
AU  - Bogdanowicz R
AD  - Department of Metrology and Optoelectronics, Faculty of Electronics, 
      Telecommunication and Informatics, Gdansk University of Technology, Gdansk 
      80-233, Poland.
FAU - Fudala-Ksiazek, Sylwia
AU  - Fudala-Ksiazek S
AD  - Department of Sanitary Engineering, Faculty of Civil and Environmental 
      Engineering, Gdansk University of Technology, Gdansk 80-233, Poland.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20200804
PL  - Netherlands
TA  - J Hazard Mater
JT  - Journal of hazardous materials
JID - 9422688
SB  - IM
OTO - NOTNLM
OT  - Advanced oxidation process
OT  - BDD
OT  - Degradation efficacy
OT  - Industrial wastewater
OT  - Micropollution
OT  - PFAS
EDAT- 2020/12/04 06:00
MHDA- 2020/12/04 06:01
CRDT- 2020/12/03 01:01
PHST- 2020/04/30 00:00 [received]
PHST- 2020/07/14 00:00 [revised]
PHST- 2020/07/27 00:00 [accepted]
PHST- 2020/12/03 01:01 [entrez]
PHST- 2020/12/04 06:00 [pubmed]
PHST- 2020/12/04 06:01 [medline]
AID - S0304-3894(20)31592-2 [pii]
AID - 10.1016/j.jhazmat.2020.123606 [doi]
PST - ppublish
SO  - J Hazard Mater. 2021 Feb 5;403:123606. doi: 10.1016/j.jhazmat.2020.123606. Epub 
      2020 Aug 4.