期刊
WATER SCIENCE AND TECHNOLOGY
卷 62, 期 6, 页码 1304-1311出版社
IWA PUBLISHING
DOI: 10.2166/wst.2010.411
关键词
de-colorization; Fenton process; malachite green; microwave-Fenton process
资金
- National Natural Science Foundation of China (NSFC) [20577072]
- Ministry of Education of China [NO708071]
Catalytic oxidation of malachite green using the microwave-Fenton process was investigated. 0% of malachite green de-colorization using the microwave process and 23.5% of malachite green de-colorization using the Fenton process were observed within 5 minutes. In contrast 95.4% of malachite green de-colorization using the microwave-Fenton was observed in 5 minutes. During the microwave-Fenton process, the optimum operating conditions for malachite green de-colorization were found to be 3.40 of initial pH, 0.08 mmol/L of Fe2+ concentration and 12.5 mmol/L of H2O2 concentration. Confirmatory tests were carried out under the optimum conditions and the COD removal rate of 82.0% and the de-colorization rate of 99.0% were observed in 5 minutes. The apparent kinetics equation of -dC/dt = 0.0337 [malachite green]Fe-0.9860[(2+)](0.8234)[H2O2](0.1663) for malachite green de-colorization was calculated, which implied that malachite green was the dominant factor in determining the removal efficiency of malachite green based on microwave-Fenton process.
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