A Comparative Study on Chemical and Electrochemical Degradation of Reactive Blue 4 Dye

 

Patricia A. Carneiro, Cecílio S. Fugivara, Raquel F. P. Nogueira, Nivaldo Boralle, Maria V. B. Zanon*

Instituto de Química - UNESP, C. P. 355, 14801-970 Araraquara, SP, Brazil

Received 02 September 2002; accepted in revised form 29 November 2002

 

Abstract

The degradation of a reactive blue 4 dye in acidic solution has been compared using electrochemical reduction and oxidation at reticulated vitreous carbon electrode (RVC) and Ti/SnO₂/SbO_x (3%mol)/RuO₂ (30%mol) electrodes and photo–Fenton method under UV irradiation. The reduction of RB4 dye at –0.6 V on RVC electrode results in 50% of color removal and up to 64% of TOC removal. The direct oxidation of RB4 dye at +1 V on RVC promotes only the oxidation of amine group and there is no color removal. On SnO₂ electrode, 58% TOC was removed and the decolorization is around 100 % after 1 hour of electrolysis at 2.4 V indicating good efficiency.  Best performance was obtained by photo-Fenton method that indicates 80% elimination of TOC and 100% of color removal but the method requires oxidant addition and time of rest to remove the generated residues.

Keywords: anthraquinone dyes, electro-reduction, electro-oxidation, Photo-Fenton, Reactive Blue 4.

 

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References

1. H. Zollinger, Color in Chemistry, 2^a. ed, V.C.H.Publisher: New York, 1991.        [ Links ]

2. K. Venkataraman, The Chemistry of Synthetic Dyes - The reactive Dyes, Vol.VI. Academic Press: New York, 1972.        [ Links ]

3.C.A. Fewson, Trends Biotechnol. 6 (1988) 148-153.        [ Links ]

4.   E.A.Clarke, R. Anliker, Handbook of Environmental Chemistry, Vol.III, Part A, Antropogenic Compounds, Ed. by O. Hutizinger, 1980.        [ Links ]

5. T. Robinson, Biores. Technol. 77 (2001) 247-255.        [ Links ]

6. H.S. Lin, M.L. Chen, Water Res. 31 (1997) 868-876.        [ Links ]

7. J. Sarasa, M.P. Roche, M.P. Ormad, E. Gimeno, A. Puig, J.L. Olivelleiro, Water Res. 32 (1998) 2721-2727.        [ Links ]

8. J. Wu, M.A. Eiteman, S.E. Law, J. Environ. Eng. (1998) 272-277.        [ Links ]

9.F.M. Saunders, P.J. Gould, R.C. Southerland, Water Res. 17 (1983) 1407-1419.        [ Links ]

10.J. Carriere, J.P. Jones, A.D. Broadbent, Ozone Sci. Eng. 15 (1993) 189-200.        [ Links ]

11. R. Pelegrini, P.P. Zamora, A.R. Andrade, J. Reyes, N. Duran, Appl. Catal. B: Environm. 22 (1999) 83-90.        [ Links ]

12.J. Luo, M. Hepel, Electrochim. Acta 46 (2001) 2913-2932.        [ Links ]

13. L. Szpyrkowicz, C. Juzzolino, S. Daniele, Ind. Eng. Chem. Res. 39 (2000) 3241-3248.        [ Links ]

14.L. Szpyrkowicz, C. Juzzolino, S.N. Kaul, Water Res. 35 (2001) 2129-2136.        [ Links ]

15.J. Naumczyk, L. Szpyrkowicz, G.F. Zilio, Water Sci. Technol. 11 (1996) 17-24.        [ Links ]

16. M.V.B. Zanoni, A.G. Fogg, J. Barek, J. Zima, Anal. Chim. Acta 349 (1997) 101-108.        [ Links ]

17. M.V.B. Zanoni, A.G. Fogg, C.C.I. Guaratini, Dyes and Pigments 50 (2001) 211 – 221.        [ Links ]

18. M.V.B. Zanoni, C.C.I. Guaratini, A.G. Fogg, Electroanal. 13, n.18 (2001) 1 - 9.        [ Links ]

19. M.V.B. Zanoni, P.A. Carneiro, M. Furlan, C.C.I. Guaratini, A.G. Fogg, Anal.Chim. Acta 385 (1999) 385-392.        [ Links ]

20. J.G.E. Calvert, J.N. Pitts Jr., Photochemistry, New York: John Wiley & Sons, 1996.        [ Links ]

21. R.F.P. Nogueira, J.R. Guimarães, Water Res. 34, n. 3 (2000) 895-901.        [ Links ]

22. M.M. Baizer, H. Lund, Organic Electrochemistry: an Introduction and a Guide, Marcel Dekker Inc.: New York, 2^nd ed., 1983.        [ Links ]

23. P.T.A. Fugivara, A.A. Cardoso and A.V. Benedetti, Analyst 121 (1996) 541.        [ Links ]

24. C. Iwakura, K. Sakamoto, J. Electrochem. Soc. 132 (1991) 858.        [ Links ]

25. Ch. Comninellis, C. Pulgarin, J. Appl. Electrochem. 23 (1993) 108-112.        [ Links ]

26. Ch. Comninellis, Electrochim. Acta 39 (1994) 1857-1861.        [ Links ]

27. R. Andreozzi, V. Caprio, A. Insola, R. Marotta, Catal. Today 53 (1999) 51-59.        [ Links ]

28. A. Safarzadeh-Amiri, J.R. Bolton, S.R. Carter, J. Adv. Oxid. Technol. 1 (1996) 18-26.        [ Links ]

29. V. Balzani, V. Carassiti, Photochemistry of Coordination Compound, Academic Press: New York, 1970.        [ Links ]

30.P.A. Carneiro, M.V.B. Zanoni, unpublished results.        [ Links ]

 

* Corresponding author. E-mail address: boldrinv@iq.unesp.br