Decolorization of azo dye acid black 1 by the UV/H2O2 process and optimization of operating parameters

Journal of Hazardous Materials
Hung-Yee ShuHuan-Jung Fan

Abstract

An advanced oxidation process, UV/H2O2, was applied for decolorization of a di-azo dye (acid black 1). The effects of operating parameters such as hydrogen peroxide dosage, UV dosage and initial dye concentration, on decolorization have been evaluated. The acid black 1 solution was completely decolorized under optimal hydrogen peroxide dosage of 21.24 mmol/l and UV dosage of 1400 W/l in less than 1.2 min. The decolorization rate followed pseudo-first order kinetics with respect to the dye concentration. The rate increased linearly with volumetric UV dosage and nonlinearly with increasing initial hydrogen peroxide concentration. It has been found that the degradation rate increased until an optimum of hydrogen peroxide dosage, beyond which the reagent exerted an inhibitory effect. For real case application, an operation parameter plot of rate constant was developed. To evaluate the electric power and hydrogen peroxide consumption by UV/H2O2 reactor, 90% color removal was set as criteria to find the balance between both factors.

References

Aug 14, 2001·Journal of Biotechnology·R BrásI Cabral Gonçalves
Aug 3, 2002·Chemosphere·Rosario López CisnerosMarta I Litter

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Citations

Apr 5, 2005·Toxicon : Official Journal of the International Society on Toxinology·Rui-Ping QiaoYuan-Yi Zhuang
Nov 3, 2012·Journal of Environmental Management·Azam AleboyehHamid Aleboyeh
Oct 5, 2011·Journal of Hazardous Materials·Chiing-Chang ChenHuan-Jung Fan
Aug 12, 2008·Journal of Hazardous Materials·A AleboyehH Aleboyeh
Aug 30, 2005·Journal of Hazardous Materials·Hung-Yee ShuWen-Pin Hsieh
Jul 6, 2005·Journal of Hazardous Materials·Hung-Yee Shu, Ming-Chin Chang
Jun 29, 2005·Journal of Hazardous Materials·Hung-Yee Shu, Ming-Chin Chang
Dec 11, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Zhiyong YangAkram Yasin

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