Activated-carbon-supported iron oxides were prepared and used as a catalyst in an integrated ultrasound/heterogeneous Fenton process for the decolorization of Crystal Violet. A synergistic effect was observed when ultrasound was combined with the heterogeneous Fenton process. The decolorization efficiency increased with the increasing power density and catalyst dosage, but decreased with the increase of initial pH value. There exists an optimal hydrogen peroxide concentration for decolorization. Catalyst stability was evaluated by measuring iron leaching in solution. The decolorization efficiency was 88% under the optimal conditions. Toxicity test with Daphnia magna showed that the acute toxicity of dye solution decreased significantly after the treatment by the heterogeneous sono-Fenton process.
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Research Article|
October 25 2013
Decolorization of Crystal Violet by ultrasound/heterogeneous Fenton process
Hui Zhang;
1Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
E-mail: [email protected]
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Hong Gao;
Hong Gao
1Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
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Chun Cai;
Chun Cai
1Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
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Chunyang Zhang;
Chunyang Zhang
1Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
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Lu Chen
Lu Chen
1Department of Environmental Engineering, Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan 430079, China
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Water Sci Technol (2013) 68 (11): 2515–2520.
Article history
Received:
June 12 2013
Accepted:
August 28 2013
Citation
Hui Zhang, Hong Gao, Chun Cai, Chunyang Zhang, Lu Chen; Decolorization of Crystal Violet by ultrasound/heterogeneous Fenton process. Water Sci Technol 1 December 2013; 68 (11): 2515–2520. doi: https://doi.org/10.2166/wst.2013.539
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