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Degradation of C.I. Reactive Red 2 through photocatalysis coupled with water jet cavitation.
J Hazard Mater. 2011 Jan 15; 185(1):315-21.JH

Abstract

The decolorization of an azo dye, C.I. Reactive Red 2 was investigated using TiO(2) photocatalysis coupled with water jet cavitation. Experiments were performed in a 4.0 L solution under ultraviolet power of 9 W. The effects of TiO(2) loading, initial dye concentration, solution pH, geometry of cavitation tube, and the addition of anions on the degradation of the dye were evaluated. Degradation of the dye followed a pseudo-first order reaction. The photocatalysis coupled with water jet cavitation elevated degradation of the dye by about 136%, showing a synergistic effect compared to the individual photocatalysis and water jet cavitation. The enhancement of photocatalysis by water jet cavitation could be due to the deagglomeration of catalyst particles as well as the better contact between the catalyst surfaces and the reactants. Venturi tube with smaller diameter and shorter length of throat tube favored the dye decolorization. The degradation efficiency was found to increase with decreasing initial concentration and pH. The presence of NO(3)(-) and SO(4)(2-) enhanced the degradation of RR2, while Cl(-), and especially HCO(3)(-) significantly reduced dye decolorization. The results of this study indicated that the coupled photocatalysis and water jet cavitation is effective in degrading dye in wastewater and provides a promising alternative for treatment of dye wastewater at a large scale.

Authors+Show Affiliations

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20940086

Citation

Wang, Xiaoning, et al. "Degradation of C.I. Reactive Red 2 Through Photocatalysis Coupled With Water Jet Cavitation." Journal of Hazardous Materials, vol. 185, no. 1, 2011, pp. 315-21.
Wang X, Jia J, Wang Y. Degradation of C.I. Reactive Red 2 through photocatalysis coupled with water jet cavitation. J Hazard Mater. 2011;185(1):315-21.
Wang, X., Jia, J., & Wang, Y. (2011). Degradation of C.I. Reactive Red 2 through photocatalysis coupled with water jet cavitation. Journal of Hazardous Materials, 185(1), 315-21. https://doi.org/10.1016/j.jhazmat.2010.09.036
Wang X, Jia J, Wang Y. Degradation of C.I. Reactive Red 2 Through Photocatalysis Coupled With Water Jet Cavitation. J Hazard Mater. 2011 Jan 15;185(1):315-21. PubMed PMID: 20940086.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of C.I. Reactive Red 2 through photocatalysis coupled with water jet cavitation. AU - Wang,Xiaoning, AU - Jia,Jinping, AU - Wang,Yalin, Y1 - 2010/09/17/ PY - 2010/06/28/received PY - 2010/09/07/revised PY - 2010/09/07/accepted PY - 2010/10/14/entrez PY - 2010/10/14/pubmed PY - 2011/3/11/medline SP - 315 EP - 21 JF - Journal of hazardous materials JO - J Hazard Mater VL - 185 IS - 1 N2 - The decolorization of an azo dye, C.I. Reactive Red 2 was investigated using TiO(2) photocatalysis coupled with water jet cavitation. Experiments were performed in a 4.0 L solution under ultraviolet power of 9 W. The effects of TiO(2) loading, initial dye concentration, solution pH, geometry of cavitation tube, and the addition of anions on the degradation of the dye were evaluated. Degradation of the dye followed a pseudo-first order reaction. The photocatalysis coupled with water jet cavitation elevated degradation of the dye by about 136%, showing a synergistic effect compared to the individual photocatalysis and water jet cavitation. The enhancement of photocatalysis by water jet cavitation could be due to the deagglomeration of catalyst particles as well as the better contact between the catalyst surfaces and the reactants. Venturi tube with smaller diameter and shorter length of throat tube favored the dye decolorization. The degradation efficiency was found to increase with decreasing initial concentration and pH. The presence of NO(3)(-) and SO(4)(2-) enhanced the degradation of RR2, while Cl(-), and especially HCO(3)(-) significantly reduced dye decolorization. The results of this study indicated that the coupled photocatalysis and water jet cavitation is effective in degrading dye in wastewater and provides a promising alternative for treatment of dye wastewater at a large scale. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20940086/Degradation_of_C_I__Reactive_Red_2_through_photocatalysis_coupled_with_water_jet_cavitation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)01195-7 DB - PRIME DP - Unbound Medicine ER -