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Energy-saving removal of methyl orange in high salinity wastewater by electrochemical oxidation via a novel Ti/SnO2-Sb anode-Air diffusion cathode system

Yu, Han; Li, Ya; Zhao, Min; Dong, Heng; Yu, Hongbing; Zhan, Sihui and Zhang, Linus LU (2015) In Catalysis Today 258. p.156-161
Abstract
Electrochemical oxidation is an effective method in removal of organic pollutant from high salinity waste-water (NaCl), by producing active chlorine at anode or hydrogen peroxide at cathode. To solve the existing problems including low efficiency, high cost and energy consumption, a Ti/SnO2-Sb anode (TSSA)-air diffusion cathode (TSSA-ADC) system was investigated for methyl orange (MO) removal from NaCl solution, using single TSSA system as control. The phase composition of TSSA was examined by X-ray diffraction. Accumulated concentrations of active chlorine, hydrogen peroxide, MO removal rate, TOC, pH value were recorded at different current densities. The results indicated that Sb-doped rutile SnO2 was formed on the TSSA. The TSSA and the... (More)
Electrochemical oxidation is an effective method in removal of organic pollutant from high salinity waste-water (NaCl), by producing active chlorine at anode or hydrogen peroxide at cathode. To solve the existing problems including low efficiency, high cost and energy consumption, a Ti/SnO2-Sb anode (TSSA)-air diffusion cathode (TSSA-ADC) system was investigated for methyl orange (MO) removal from NaCl solution, using single TSSA system as control. The phase composition of TSSA was examined by X-ray diffraction. Accumulated concentrations of active chlorine, hydrogen peroxide, MO removal rate, TOC, pH value were recorded at different current densities. The results indicated that Sb-doped rutile SnO2 was formed on the TSSA. The TSSA and the ADC exhibited good catalysis to chlorine evolution and oxygen reduction, respectively. Although MO were almost completely removed in both systems, higher TOC removal, shorter running time and lower energy consumption were attained in the TSSA-ADC system. pH value was more stable (6.0-6.4) in the TSSA-ADC system than that in the TSSA system (6.0-9.4), predicting its stronger capacity in anti-scaling when treating high salinity wastewater with hard ions like Ca2+ and Mg2+. (C) 2015 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Energy saving, Air diffusion cathode, anode, Ti/SnO2 Sb, High salinity organic wastewater, Electrochemical oxidation
in
Catalysis Today
volume
258
pages
156 - 161
publisher
Elsevier
external identifiers
  • wos:000363424200022
  • scopus:84944352965
ISSN
0920-5861
DOI
10.1016/j.cattod.2015.04.030
language
English
LU publication?
yes
id
780cead9-fbb2-439c-9009-0a60aa2e98e3 (old id 8195161)
date added to LUP
2015-11-26 09:18:57
date last changed
2017-10-22 04:04:48
@article{780cead9-fbb2-439c-9009-0a60aa2e98e3,
  abstract     = {Electrochemical oxidation is an effective method in removal of organic pollutant from high salinity waste-water (NaCl), by producing active chlorine at anode or hydrogen peroxide at cathode. To solve the existing problems including low efficiency, high cost and energy consumption, a Ti/SnO2-Sb anode (TSSA)-air diffusion cathode (TSSA-ADC) system was investigated for methyl orange (MO) removal from NaCl solution, using single TSSA system as control. The phase composition of TSSA was examined by X-ray diffraction. Accumulated concentrations of active chlorine, hydrogen peroxide, MO removal rate, TOC, pH value were recorded at different current densities. The results indicated that Sb-doped rutile SnO2 was formed on the TSSA. The TSSA and the ADC exhibited good catalysis to chlorine evolution and oxygen reduction, respectively. Although MO were almost completely removed in both systems, higher TOC removal, shorter running time and lower energy consumption were attained in the TSSA-ADC system. pH value was more stable (6.0-6.4) in the TSSA-ADC system than that in the TSSA system (6.0-9.4), predicting its stronger capacity in anti-scaling when treating high salinity wastewater with hard ions like Ca2+ and Mg2+. (C) 2015 Elsevier B.V. All rights reserved.},
  author       = {Yu, Han and Li, Ya and Zhao, Min and Dong, Heng and Yu, Hongbing and Zhan, Sihui and Zhang, Linus},
  issn         = {0920-5861},
  keyword      = {Energy saving,Air diffusion cathode,anode,Ti/SnO2 Sb,High salinity organic wastewater,Electrochemical oxidation},
  language     = {eng},
  pages        = {156--161},
  publisher    = {Elsevier},
  series       = {Catalysis Today},
  title        = {Energy-saving removal of methyl orange in high salinity wastewater by electrochemical oxidation via a novel Ti/SnO2-Sb anode-Air diffusion cathode system},
  url          = {http://dx.doi.org/10.1016/j.cattod.2015.04.030},
  volume       = {258},
  year         = {2015},
}