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Degradation of desphenyl chloridazon in a novel synergetic electrocatalytic system with Ni–Sb–SnO2/Ti anode and PEDOT/PSS-CNTs modified air diffusion cathode

Zhao, Jingyun ; Chi, Zexu ; Dong, Heng ; Sun, Changfu ; Yu, Han LU and Yu, Hongbing (2021) In Journal of Cleaner Production 300.
Abstract

This study explored the depth treatment of desphenly chloridazon (DPC) wastewater by a novel synergetic dual-electrodes electrocatalytic (SDEs) system which consisted of Ni–Sb–SnO2/Ti anode (NSSTA) and PEDOT/PSS-CNTs modified activated carbon air diffusion cathode (PP-CNTs AC ADC). NSSTA exhibited an enhanced capability to produce reactive oxygen species (·OH and O3), its O3 production increased to 6.54 mg/L. PP-CNTs AC ADC was observed to have improved activity of catalyzing oxygen reduction reaction (ORR) with 648.23 mg/L H2O2 generated. Owing to the synergetic effect of O3 and H2O2, additional ·OH was obtained in SDEs system through the... (More)

This study explored the depth treatment of desphenly chloridazon (DPC) wastewater by a novel synergetic dual-electrodes electrocatalytic (SDEs) system which consisted of Ni–Sb–SnO2/Ti anode (NSSTA) and PEDOT/PSS-CNTs modified activated carbon air diffusion cathode (PP-CNTs AC ADC). NSSTA exhibited an enhanced capability to produce reactive oxygen species (·OH and O3), its O3 production increased to 6.54 mg/L. PP-CNTs AC ADC was observed to have improved activity of catalyzing oxygen reduction reaction (ORR) with 648.23 mg/L H2O2 generated. Owing to the synergetic effect of O3 and H2O2, additional ·OH was obtained in SDEs system through the electro-peroxone reaction. Compared with the single-electrode electrocatalytic (SE) systems, the SDEs system showed superior pesticide degradation performance, higher mineralization current efficiency (MCE) and lower energy consumption (EC). In the SDEs system, the optimal 91.7% of DPC removal efficiency and 90.7% of DPC mineralization efficiency were obtained within 150 min by electrocatalytic oxidation of 17.5 ppm and 25 ppm pesticide wastewater at the current density of 11.94 mA/cm2, respectively. The treated water showed reduced acute toxicity than that of the raw wastewater, which suggested that the SDEs system is a promising technology for depth treatment of the pesticide industry effluent with simultaneous decontamination and detoxification realized.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Air diffusion cathode, Electro-peroxone, Ni–Sb–SnO/Ti, Pesticide wastewater, Synergetic electrocatalytic system
in
Journal of Cleaner Production
volume
300
article number
126961
publisher
Elsevier
external identifiers
  • scopus:85103975957
ISSN
0959-6526
DOI
10.1016/j.jclepro.2021.126961
language
English
LU publication?
yes
id
91dc2181-1fc1-4217-b999-8da246e165f9
date added to LUP
2021-04-20 11:09:38
date last changed
2022-04-27 01:36:07
@article{91dc2181-1fc1-4217-b999-8da246e165f9,
  abstract     = {{<p>This study explored the depth treatment of desphenly chloridazon (DPC) wastewater by a novel synergetic dual-electrodes electrocatalytic (SDEs) system which consisted of Ni–Sb–SnO<sub>2</sub>/Ti anode (NSSTA) and PEDOT/PSS-CNTs modified activated carbon air diffusion cathode (PP-CNTs AC ADC). NSSTA exhibited an enhanced capability to produce reactive oxygen species (·OH and O<sub>3</sub>), its O<sub>3</sub> production increased to 6.54 mg/L. PP-CNTs AC ADC was observed to have improved activity of catalyzing oxygen reduction reaction (ORR) with 648.23 mg/L H<sub>2</sub>O<sub>2</sub> generated. Owing to the synergetic effect of O<sub>3</sub> and H<sub>2</sub>O<sub>2</sub>, additional ·OH was obtained in SDEs system through the electro-peroxone reaction. Compared with the single-electrode electrocatalytic (SE) systems, the SDEs system showed superior pesticide degradation performance, higher mineralization current efficiency (MCE) and lower energy consumption (EC). In the SDEs system, the optimal 91.7% of DPC removal efficiency and 90.7% of DPC mineralization efficiency were obtained within 150 min by electrocatalytic oxidation of 17.5 ppm and 25 ppm pesticide wastewater at the current density of 11.94 mA/cm<sup>2</sup>, respectively. The treated water showed reduced acute toxicity than that of the raw wastewater, which suggested that the SDEs system is a promising technology for depth treatment of the pesticide industry effluent with simultaneous decontamination and detoxification realized.</p>}},
  author       = {{Zhao, Jingyun and Chi, Zexu and Dong, Heng and Sun, Changfu and Yu, Han and Yu, Hongbing}},
  issn         = {{0959-6526}},
  keywords     = {{Air diffusion cathode; Electro-peroxone; Ni–Sb–SnO/Ti; Pesticide wastewater; Synergetic electrocatalytic system}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Cleaner Production}},
  title        = {{Degradation of desphenyl chloridazon in a novel synergetic electrocatalytic system with Ni–Sb–SnO<sub>2</sub>/Ti anode and PEDOT/PSS-CNTs modified air diffusion cathode}},
  url          = {{http://dx.doi.org/10.1016/j.jclepro.2021.126961}},
  doi          = {{10.1016/j.jclepro.2021.126961}},
  volume       = {{300}},
  year         = {{2021}},
}