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Effects of oxidant concentration and temperature on decolorization of azo dye: comparisons of UV/Fenton and UV/Fenton-like systems.
Water Sci Technol. 2012; 65(11):1970-4.WS

Abstract

This study applies photo-Fenton and photo-Fenton-like systems to decolorize C.I. Reactive Red 2 (RR2). The oxidants were H(2)O(2) and Na(2)S(2)O(8); Fe(2+), Fe(3+), and Co(2+) were used to activate these two oxidants. The effects of oxidant concentration (0.3-2 mmol/L) and temperature (25-55 °C) on decolorization efficiency of the photo-Fenton and photo-Fenton-like systems were determined. The decolorization rate constants (k) of RR2 in the tested systems are consistent with pseudo-first-order kinetics. The rate constant increased as oxidant concentration and temperature increased. Activation energies of RR2 decolorization in the UV/H(2)O(2)/Fe(2+), UV/H(2)O(2)/Fe(3+), UV/Na(2)S(2)O(8)/Fe(2+) and UV/Na(2)S(2)O(8)/Fe(3+) systems were 32.20, 39.54, 35.54, and 51.75 kJ/mol, respectively.

Authors+Show Affiliations

Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, Taiwan.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22592466

Citation

Kuo, C Y., et al. "Effects of Oxidant Concentration and Temperature On Decolorization of Azo Dye: Comparisons of UV/Fenton and UV/Fenton-like Systems." Water Science and Technology : a Journal of the International Association On Water Pollution Research, vol. 65, no. 11, 2012, pp. 1970-4.
Kuo CY, Pai CY, Wu CH, et al. Effects of oxidant concentration and temperature on decolorization of azo dye: comparisons of UV/Fenton and UV/Fenton-like systems. Water Sci Technol. 2012;65(11):1970-4.
Kuo, C. Y., Pai, C. Y., Wu, C. H., & Jian, M. Y. (2012). Effects of oxidant concentration and temperature on decolorization of azo dye: comparisons of UV/Fenton and UV/Fenton-like systems. Water Science and Technology : a Journal of the International Association On Water Pollution Research, 65(11), 1970-4. https://doi.org/10.2166/wst.2012.095
Kuo CY, et al. Effects of Oxidant Concentration and Temperature On Decolorization of Azo Dye: Comparisons of UV/Fenton and UV/Fenton-like Systems. Water Sci Technol. 2012;65(11):1970-4. PubMed PMID: 22592466.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of oxidant concentration and temperature on decolorization of azo dye: comparisons of UV/Fenton and UV/Fenton-like systems. AU - Kuo,C Y, AU - Pai,C Y, AU - Wu,C H, AU - Jian,M Y, PY - 2012/5/18/entrez PY - 2012/5/18/pubmed PY - 2012/8/10/medline SP - 1970 EP - 4 JF - Water science and technology : a journal of the International Association on Water Pollution Research JO - Water Sci Technol VL - 65 IS - 11 N2 - This study applies photo-Fenton and photo-Fenton-like systems to decolorize C.I. Reactive Red 2 (RR2). The oxidants were H(2)O(2) and Na(2)S(2)O(8); Fe(2+), Fe(3+), and Co(2+) were used to activate these two oxidants. The effects of oxidant concentration (0.3-2 mmol/L) and temperature (25-55 °C) on decolorization efficiency of the photo-Fenton and photo-Fenton-like systems were determined. The decolorization rate constants (k) of RR2 in the tested systems are consistent with pseudo-first-order kinetics. The rate constant increased as oxidant concentration and temperature increased. Activation energies of RR2 decolorization in the UV/H(2)O(2)/Fe(2+), UV/H(2)O(2)/Fe(3+), UV/Na(2)S(2)O(8)/Fe(2+) and UV/Na(2)S(2)O(8)/Fe(3+) systems were 32.20, 39.54, 35.54, and 51.75 kJ/mol, respectively. SN - 0273-1223 UR - https://www.unboundmedicine.com/medline/citation/22592466/Effects_of_oxidant_concentration_and_temperature_on_decolorization_of_azo_dye:_comparisons_of_UV/Fenton_and_UV/Fenton_like_systems_ L2 - https://iwaponline.com/wst/article-lookup/doi/10.2166/wst.2012.095 DB - PRIME DP - Unbound Medicine ER -