TY - JOUR
T1 - Degradation of aqueous alachlor in pulsed corona discharge
AU - Bolobajev, Juri
AU - Gornov, Daniil
AU - Kornev, Iakov
AU - Preis, Sergei
N1 - Funding Information:
This work was supported by the Institutional Development Program of Tallinn University of Technology for 2016–2022, project 2014-2020.4.01.16-0032 from EU Regional Development Fund , and the Research Group Support project PRG776 of Estonian Research Council .
Publisher Copyright:
© 2020 Elsevier B.V.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2021/1
Y1 - 2021/1
N2 - Gas-phase pulsed corona discharge (PCD) gained attention due to its energy-efficient oxidation of waterborne organic pollutants and simplicity in use and maintenance. Experimental study in PCD oxidation of aqueous herbicide alachlor was undertaken for its energy efficiency and degradation products. Plasma oxidation efficiency exceeds the one of ozonation by at least two times. Electric conductivity up to 10 mS cm−1 demonstrated negligible impact. Bicarbonates reduced the oxidation efficiency scavenging hydroxyl radicals. Identification of degradation intermediates proposed the rationale of predominant OH-radical reactions including dehalogenation, electrophilic attack of aromatic ring, ether bond cleavage, and cyclisation.
AB - Gas-phase pulsed corona discharge (PCD) gained attention due to its energy-efficient oxidation of waterborne organic pollutants and simplicity in use and maintenance. Experimental study in PCD oxidation of aqueous herbicide alachlor was undertaken for its energy efficiency and degradation products. Plasma oxidation efficiency exceeds the one of ozonation by at least two times. Electric conductivity up to 10 mS cm−1 demonstrated negligible impact. Bicarbonates reduced the oxidation efficiency scavenging hydroxyl radicals. Identification of degradation intermediates proposed the rationale of predominant OH-radical reactions including dehalogenation, electrophilic attack of aromatic ring, ether bond cleavage, and cyclisation.
KW - Advanced oxidation process (AOP)
KW - Aqueous pollution
KW - Chloroacetanilide
KW - Non-thermal plasma
KW - Pesticide
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U2 - 10.1016/j.elstat.2020.103543
DO - 10.1016/j.elstat.2020.103543
M3 - Article
AN - SCOPUS:85098617925
VL - 109
JO - Journal of Electrostatics
JF - Journal of Electrostatics
SN - 0304-3886
M1 - 103543
ER -