Electrochemical Oxidation of Ultraviolet Absorbers in Wastewater Using Ti/PbO₂ Electrodes

Abstract:

The anodic oxidation of ultraviolet absorbers in wastewater was investigated on Ti/PbO2 electrodes. Specifically, the effect of current density and pH was examined. After the 180 min of electrolysis at the current density 10 mA•cm-2 and pH 4, the COD removal efficiency and decolorization rate were 98.49% and 99.2%, respectively. Comparing electro-oxidation process with Fenton process, the former removal efficiencies of COD and color were 1.4 times and 1.2 times than that in the latter one. Additionally, the electro-oxidation did not need any chemicals while Fenton process consumed certain amount of chemicals and produced huge sludge. Such studies provided some relevant information about the applicability of electro-oxidation system for treatment of wastewater contaminated by industrial organic synthesis.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 1918-1923
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.1918
• Online since: May 2012
• Authors: Chu Yin Yang, Fei Xiang Chen, Jia De Wang, Qi Liu
• Keywords: Chemical Oxygen Demand (COD), Color, Electro-Oxidation, Fenton Process, Removal Efficiency

References

[1] T.A. Neubecker and H.E. Allen: Water Res. Forum Vol. 1-17 (1983), p.1

[2] T. Mandal, S. Maity and D. Dasgupta: Desalination. Forum Vol. 1-250 (2010), p.87

[3] Y.B. Ding, L.H. Zhu, J.C. Yan, Q.Q. Xiang and H.Q. Tang: J. Environ. Monitor. Forum Vol. 11-13 (2011), p.3057

[4] C.J. Ogugbue, T. Sawidis and N.A. Oranusi: Ecol. Eng. Forum Vol. 12-37, p. (2056)

[5] M. Unlu, H. Yukseler and U. Yetis: Desalination. Forum Vol. 1/3-240 (2009), p.178

[6] M.I. Badawy, R.A. Wahaab and A.S. El-Kalliny: J. Hazard. Mater. Forum Vol. 1/3-167 (2009), p.567

[7] Z.B. Chen, N.Q. Ren, A.J. Wang, Z.P. Zhang and Y. Shi: Water Res. Forum Vol. 13-42 (2008), p.3385

[8] Y.Y. Zhang, C. He, V.K. Sharma, X.Z. Li, S.H. Tian and Y. Xiong: J. Chem. Technol. Biot. Forum Vol. 12-86, p.1488

[9] S.I. Ayhan, K. Sedat and O. Mahmut: J. Hazard. Mater. Forum Vol. 1/2-167, p.940

[10] M.A. Rodrigo, P. Canizares, C. Buitron and C. Saez: Electrochim. Acta. Forum Vol. 27-55 (2010), p.8160

[11] S. Raghu, C.W. Lee, S. Chellanmmal, S. Palanichamy and C.A. Basha: J. Hazard. Mater. Forum Vol. 1/3-171 (2009), p.748

[12] K.J. Zhao, G.H. Zhao, P.Q. Li, J.X. Gao, B.Y. Lv and D.M. Li: Chemosphere. Forum Vol. 4-80 (2010), p.410

[13] Information on http://kjs.mep.gov.cn/hjbhbz/bzwb/shjbh/sjcgfffbz/199007/t19900701_67060.htm

[14] Information on http://kjs.mep.gov.cn/hjbhbz/bzwb/shjbh/sjcgfffbz/199007/t19900701_67087.htm

[15] T. Mandal, D. Dasgupta, S. Mandal and S. Datta: J. Hazard. Mater. Forum Vol. 1/3-180 (2010), p.204

[16] J.A. Perdigón-Melón, J.B. Carbajo, A.L. Petre, R. Rosal and E. Garcia-Calvo: J. Hazard. Mater. Forum Vol. 1/3-181 (2010), p.127

[17] K.S. Tay, N.A. Rahman and M.R. Bin Abas: Environ. Chem. Lett. Forum Vol. 4-9 (2011), p.539

[18] G. Lofranoa, S. Meriç, V. Belgiorno and R.M.A. Napoli: Desalination. Forum Vol. 1/3-211 (2007), p.10

[19] G.A. Zgajnar, J. Zagorc-Koncan and M. Cotman: Desalination. Forum Vol. 1/3-275, p.269

[20] Y.S.Ma: Toxicol Ind Health. Forum Vol. 10-27, p.934