CLC number: TQ150.9; O646.5; X783
On-line Access: 2024-08-27
Received: 2023-10-17
Revision Accepted: 2024-05-08
Crosschecked: 0000-00-00
Cited: 5
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CONG Yan-qing, WU Zu-cheng, TAN Tian-en. Dechlorination by combined electrochemical reduction and oxidation[J]. Journal of Zhejiang University Science B, 2005, 6(6): 563-568.
@article{title="Dechlorination by combined electrochemical reduction and oxidation",
author="CONG Yan-qing, WU Zu-cheng, TAN Tian-en",
journal="Journal of Zhejiang University Science B",
volume="6",
number="6",
pages="563-568",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.B0563"
}
%0 Journal Article
%T Dechlorination by combined electrochemical reduction and oxidation
%A CONG Yan-qing
%A WU Zu-cheng
%A TAN Tian-en
%J Journal of Zhejiang University SCIENCE B
%V 6
%N 6
%P 563-568
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B0563
TY - JOUR
T1 - Dechlorination by combined electrochemical reduction and oxidation
A1 - CONG Yan-qing
A1 - WU Zu-cheng
A1 - TAN Tian-en
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 6
SP - 563
EP - 568
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B0563
Abstract: Chlorophenols are typical priority pollutants listed by USEPA (U.S. Environmental Protection Agency). The removal of chlorophenol could be carried out by a combination of electrochemical reduction and oxidation method. Results showed that it was feasible to degrade contaminants containing chlorine atoms by electrochemical reduction to form phenol, which was further degraded on the anode by electrochemical oxidation. Chlorophenol removal rate was more than 90% by the combined electrochemical reduction and oxidation at current of 6 mA and pH 6. The hydrogen atom is a powerful reducing agent that reductively dechlorinates chlorophenols. The instantaneous current efficiency was calculated and the results indicated that cathodic reduction was the main contributor to the degradation of chlorophenol.
[1] Antonaraki, S., Androulaki, E., Dimotikali, D., Hiskia, A., Papaconstantinou, E., 2002. Photolytic degradation of all chlorophenols with polyoxometallates and H2O2. J. Photochem. Photobiol. A: Chem., 148:191-197.
[2] Brillas, E., Bastida, R.M., Liosa, E., Casado, J., 1995. Electrochemical destruction of aniline and 4-chloroaniline for wastewater treatment using a carbon-PTFE O2-fed cathode. J. Electrochem. Soc., 142(6):1733-1741.
[3] Cheng, S.F., Wu, S.C., 2001. Feasibility of using metals to remediate water containing TCE. Chemosphere, 43:1023-1028.
[4] Comninellis, C., Pulgarin, C., 1993. Electrochemical oxidation of phenol for wastewater treatment using SnO2 anodes. Appl. Electrochem., 23:108-112.
[5] Cong, Y.Q., Wu, Z.C., Ye, Q., Tan, T.E., 2004. Degradation of chlorophenol by in-situ electrochemically generated oxidant. J. Zhejiang University SCIENCE, 5:180-185.
[6] Hirvonen, A., Trapido, M., Hentunen, J., Tarhanen, J., 2000. Formation of hydroxylated and dimeric intermediates during oxidation of chlorinated phenols in aqueous solution. Chemosphere, 41:1211-1218.
[7] Houk, L.L., Johnson, S.K., Feng, J., Shouk, R., Johnson, D.C., 1998. Electrochemical incineration of benzoquinone in aqueous media using a quaternary metal oxide electrode in the absence of a soluble supporting electrolyte. Appl. Electrochem., 28:1167-1177.
[8] Huang, Q., Rusling, J.F., 1995. Formal reduction potentials and redox chemistry of polyhalogenated blphenyls in a bicontinuous microemulsion. Environ. Sci. Technol., 29:98-103.
[9] Li, T., Farrell, J., 2000. Reductive dechlorination of trichloroethene and carbon tetrachloride using iron and palladized-iron cathodes. Environ. Sci. Technol., 34:173-179.
[10] Lin, C.H., Tseng, S.K., 1999. Electrochemically reductive dechlorination of pentachlorophenol using a high overpotential zinc cathode. Chemosphere, 39:2375-2389.
[11] Mylonas, A., Papaconstantinou, E.J., 1996. On the mechanism of photocatalytic degradation of chlorinated phenols to CO2 and HCl by polyoxometalates. Photochem. Photobiol. A: Chem., 94:77-82.
[12] Oturan, M.A., Oturan, N., Lahitte, C., Trevin, S., 2001. Production of hydroxyl radicals by electrochemically assisted fenton’s reagent application to the mineralization of an organic micropollutant, pentachlorophenol. J. Electroanal. Chem., 507:96-102.
[13] Polcaro, A.M., Palmas, S., Renoldi, F., Mascia, M., 1999. On the performance of Ti/SnO2 and Ti/PbO2 anodes in electrochemical degradation of 2-chlorophenol for wastewater treatment. Appl. Electrochem., 29:147-151.
[14] Tahar, N.B., Savall, A.J., 1998. Mechanistic aspects of phenol electrochemical degradation by oxidation on a Ta/PbO2 anode. Electrochem. Soc., 145:3427-3434.
[15] Tsyganok, A.I., Yamanaka, I., Otsuka, K., 1999. Dechlorination of chloroaromatics by electrocatalytic reduction over palladium-loaded carbon felt at room temperature. Chemospere, 39:1819-1831.
[16] Wu, Z.C., Zhou, M.H., 2001. Partial degradation of phenol by advanced electrochemical oxidation process. Environ. Sci. Technol., 35:2698-2703.
[17] Wu, Z.C., Zhou, M.H., Huang, Z.W., Wang, D.H., 2002a. Electrocatalysis method for wastewater treatment using a novel beta-lead dioxide anode. J. Zhejiang University SCIENCE, 3:194-198.
[18] Wu, Z.C., Cong, Y.Q., Zhou, M.H., Ye, Q., Tan, T.E., 2002b. Removal of phenolic compounds by electro-assisted advanced process for wastewater purification. Korean J. of Chem. Eng., 19:866-870.
[19] Zhang, W.X., Wang, C.B., Lien, H.L., 2001. Treatment of chlorinated organic contaminants with nanoscale bimetallic particles. Catalysis today, 40:387-395.
Open peer comments: Debate/Discuss/Question/Opinion
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EBRAHIM<ALQURASHI00@GMAIL.COM>
2014-11-26 15:11:54
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Dechlorination by combined electrochemical reduction and oxidation
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Yong@PhD<yongphd@mail.ru>
2013-02-24 14:51:47
very Interesting and well written