Removal of Phenolic Compounds by Electro-assisted Advanced Process for Wastewater Purification

Zucheng Wu; Yanqing Cong; Minghua Zhou; Qian Ye; Tianen Tan

Korean Journal of Chemical Engineering, Vol.19, No.5, 866-870, September, 2002

DOI10.1007/BF02706981 Export Citation

Removal of Phenolic Compounds by Electro-assisted Advanced Process for Wastewater Purification

Zucheng Wu^†, Yanqing Cong, Minghua Zhou, Qian Ye, and Tianen Tan

Department of Environmental Engineering, Zhejiang University, Hangzhou 310027, China

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Electro-assisted advanced process was developed for wastewater treatment of phenolic compounds. A series of correlative experiments were carried out: the degradation of phenol by the advanced electrochemical oxidation process, the degradation of chlorophenol by the photo-electrocatalysis, and the degradation of chlorophenol by pair electrodes. It was found that phenol and chlorophenol could be removed rapidly and effectively at initial concentration of 100-400 mg L(-1), current density of 3.2-27.5 mA cm(-2), and applied voltage of 2-5 V. The combination of electrocatalytic and UV radiation greatly accelerated the removal efficiency. The dechlorination of chlorophenol could be achieved under cathodic reduction so that it could be further oxidized more quickly and completely. The mechanism of dechlorination was proposed to be the indirect dechlorination by atomic hydrogen. The electro-assisted advanced processes were suitable for the treatment of the phenolic compounds.

Keywords:Electro-assisted Process;Chlorophenol;Dechlorination;Phenolic Compounds;Degradation

[References]

APHA, AWWA, WEF, "Standard Method for the Examination of Water and Wastewater (19th ed.)," Washington D.C., 515 (1995)
Chen J, Rulkens WH, Bruning H, Water Sci. Technol., 35, 231 (1997)
Choi W, Kim S, Cho S, Yoo HI, Kim MH, Korean J. Chem. Eng., 18(6), 898 (2001)
Comninellis C, Nerini A, J. Appl. Electrochem., 25(1), 23 (1995)
Grega MD, Buckingham PL, Evans LC, "Hazardous Waste Management," McGraw-Hill, New York (1994)
Hirvonen A, Trapido M, Hentunen J, Tarhanen J, Chemosphere, 41, 1211 (2000)
Hugul M, Boz I, Apak R, J. Hazard. Mater. B, 64, 313 (1999)
Juttner K, Galla U, Schmieder H, Electrochim. Acta, 45(15-16), 2575 (2000)
Lee J, Langer SH, Korean J. Chem. Eng., 12(2), 168 (1995)
Lee KR, Lim JH, Lee JK, Chun HS, Korean J. Chem. Eng., 16(6), 829 (1999)
Lin CH, Tseng SK, Chemosphere, 39, 2375 (1999)
Lu MC, Chen JN, Water Sci. Technol., 36, 117 (1997)
Park DR, Ahn BJ, Park HS, Yamashita H, Anpo M, Korean J. Chem. Eng., 18(6), 930 (2001)
Rajeshwar K, Ibanez JG, Swain GM, J. Appl. Electrochem., 24(11), 1077 (1994)
Ross NC, Spackman RA, Hitchman ML, White PC, J. Appl. Electrochem., 27(1), 51 (1997)
Verschueren K, "Handbook of Environmental Data on Organic Chemicals," Van Nostrand Reinhold Co., New York (1977)
Wu ZC, Zhou MH, Environ. Sci. Technol., 35, 2698 (2001)
Zhou MH, Wu ZC, Zhu J, Ye Q, Fu J, Chin. J. Catal., in press, 23 (2002)

[Referenced By]

[1] APHA, AWWA, WEF, "Standard Method for the Examination of Water and Wastewater (19th ed.)," Washington D.C., 515 (1995)

[2] Chen J, Rulkens WH, Bruning H, Water Sci. Technol., 35, 231 (1997)

[3] Choi W, Kim S, Cho S, Yoo HI, Kim MH, Korean J. Chem. Eng., 18(6), 898 (2001)

[4] Comninellis C, Nerini A, J. Appl. Electrochem., 25(1), 23 (1995)

[5] Grega MD, Buckingham PL, Evans LC, "Hazardous Waste Management," McGraw-Hill, New York (1994)

[6] Hirvonen A, Trapido M, Hentunen J, Tarhanen J, Chemosphere, 41, 1211 (2000)

[7] Hugul M, Boz I, Apak R, J. Hazard. Mater. B, 64, 313 (1999)

[8] Juttner K, Galla U, Schmieder H, Electrochim. Acta, 45(15-16), 2575 (2000)

[9] Lee J, Langer SH, Korean J. Chem. Eng., 12(2), 168 (1995)

[10] Lee KR, Lim JH, Lee JK, Chun HS, Korean J. Chem. Eng., 16(6), 829 (1999)

[11] Lin CH, Tseng SK, Chemosphere, 39, 2375 (1999)

[12] Lu MC, Chen JN, Water Sci. Technol., 36, 117 (1997)

[13] Park DR, Ahn BJ, Park HS, Yamashita H, Anpo M, Korean J. Chem. Eng., 18(6), 930 (2001)

[14] Rajeshwar K, Ibanez JG, Swain GM, J. Appl. Electrochem., 24(11), 1077 (1994)

[15] Ross NC, Spackman RA, Hitchman ML, White PC, J. Appl. Electrochem., 27(1), 51 (1997)

[16] Verschueren K, "Handbook of Environmental Data on Organic Chemicals," Van Nostrand Reinhold Co., New York (1977)

[17] Wu ZC, Zhou MH, Environ. Sci. Technol., 35, 2698 (2001)

[18] Zhou MH, Wu ZC, Zhu J, Ye Q, Fu J, Chin. J. Catal., in press, 23 (2002)