Sains Malaysiana 39(4)(2010): 587–591

Decolorization of Reactive Orange 16 Dye by Copper Oxide System

(Penyahwarnaan Pewarna Reaktif Jingga 16 oleh Sistem Kuprum Oksida)

Abdul Halim Abdullah* & Wan-Yuan Wong

Department of Chemistry, Faculty of Science, Universiti Putra Malaysia

43400, UPM Serdang, Selangor, Malaysia

Mohd Ismail Yaziz

Faculty Environmental Studies, Universiti Putra Malaysia

43400, UPM Serdang, Selangor, Malaysia

Received: 14 August 2009 / Accepted: 18 January 2010

ABSTRACT

The decolorization of reactive orange 16 dye (RO16) from aqueous solution by CuO/H2O2 was investigated. The amount of dye removed was determined by measuring the concentration of the dye at its characteristic wavelengths by UV-Vis spectrophotometer. The effects of CuO dose, H2O2 concentration and UV light on the decolorization of the dye were investigated. It was found that the removal rate increased with increasing mass of CuO and increasing concentration of H2O2. The combination of CuO, H2O2 and UV light was the best system with dye removal of 100% after 6 h. The removal efficiency observed was in the order: CuO/UV/H2O2 > CuO/H2O2 > CuO/UV = CuO > UV/H2O2 > H2O2 > UV.

Keywords: Copper oxide; decolorization; dye; H2O2; UV light

ABSTRAK

Penyahwarnaan pewarna reaktif jingga16 (RO16) daripada larutan akueus oleh CuO/H2O2 telah dikaji. Jumlah pewarna yang disingkirkan telah ditentukan dengan mengukur kepekatan pewarna pada panjang gelombang ciri menggunakan spektrofotometer UV-nampak. Kesan dos CuO, kepekatan H2O2 dan cahaya UV ke atas penyahwarnaan pewarna telah dikaji. Kadar penyingkiran didapati meningkat dengan peningkatan jisim CuO dan kepekatan H2O2. Kombinasi CuO, H2O2 dan cahaya UV adalah sistem terbaik dengan penyingkiran 100% pewarna selepas 6 jam. Kecekapan penyingkiran adalah mengikut turutan: CuO/UV/H2O2 > CuO/H2O2 > CuO/UV = CuO > UV/H2O2 > H2O2 > UV.

Kata kunci: Cahaya UV; H2O2; kuprum oksida; penyahwarnaan; pewarna

REFERENCES

Azbar, N., Yonar, T. & Kestioglu, K. 2004. Comparison of various advanced oxidation processes and chemical treatment methods for COD and color removal from a polyester and acetate fiber dyeing effluent. Chemosphere 55: 35-43.

Baldrain, P., Mehautov‡, V., Gabriel, J., Nerud, F., Stopka, P., Hurby¥, M. & Beneš, M.J. 2006. Decolorization of synthetic dyes by hydrogen peroxide with heterogeneous catalysis by mixed iron oxides. Applied Catalysis B: Environmental 66: 258-264.

Bauer, C., Jacques, P. & Kalt, A. 2001. Photooxidation of an azo dye induced by visible light incident on the surface of TiO2. Jorunal of Photochemistry and Photobiology A: Chemistry. 140: 87-92.

Carneiro, P.A., Osugi, M.E., Sene, J.J., Anderson, M.A. & Zanoni, M.V.B. 2004. Evaluation of color removal and degradation of a reactive textile azo dye on nonporous TiO2 thin-firm electrodes. Electrochimica Acta 49: 3807-3820.

De, A.K., Chaudhure, B., Bhttacharjee, S. & Dutta, B.K. 1999. Estimation of .OH radical reaction rate constants for phenol and chlorinated phenols using UV/H2O2 photo-oxidation. Journal of Hazardous Materials 64: 91-104.

Drijver, D., Van Langenhove, H. & Beckers, M. 1999. Decomposition of phenol and trichloroethylene by the ultrasound/H2O2/CuO process. Water Research 33: 1194-1199.

Gemeay, A.H., El-Sharkawy, R.G., Mansour, I.A. & Zaki, A.B. 2008. Catalytic activity of polyanaline/MnO2 composites towards the oxidative decolorization of organic dyes. Applied Catalysis B: Environmental 80: 106-115.

Karkmaz, M., Puzenat, E., Guillard, C. & Herrmann, J.M. 2004. Photocatalytic degradation of the alimentary azo dye amaranth. Mineralization of the azo group to nitrogen. Applied Catalysis B: Environmental 51: 183-194

McMullan, G., Meehan, C., Conneely, A., Kirby, N., Robinson, T., Nigam, P., Banat, I.M., Marchant, R. & Smyth, W.F. 2001. Microbial decolourisation and degradation of textile dyes. Applied Microbiology & Biotechnology 56: 81-87.

Mozia, S., Tomaszewska, M. & Morawski, A.W. 2005. Photocatalytic degradation of azo-dye Acid Red 18. Desalination 185: 449-456.

Nigam, P., Robinson, T., Mcmullan, G. & Marchant, R. 2001. Remediation of dyes in textile e: A critical review on current treatment technologies with a proposed alternative. Bioresource Technology 77: 247-255.

Walling, C. 1975. Fenton’s Reagent Revisited. Accounts of Chemical Research 8: 125-131.

Xu, X.R., Li, H.B., Wang, W.H. & Gu, J.D. 2004. Degradation of dyes in aqueous solutions by the Fenton process. Chemosphere 57: 595-600.

Yang, M., Hu, J. & Ito, J.K. 1998. Characteristics of Fe2+/ H2O2/ UV oxidation process. Environmental Technology 19: 183-191.

Zollinger, H. 1991. Color Chemistry: Synthesis, Properties and Applications of Organic Dyes and Pigments. 2nd ed New York: V.C.H. Publisher.

*Corresponding author; email: halim@science.upm.edu.my