期刊
INTERNATIONAL JOURNAL OF PHOTOENERGY
卷 2013, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2013/893131
关键词
-
资金
- Colleges and Universities Scientific Research Project Foundation of Hebei Education Department [Z2013010]
- Science and Technology Bureau of Langfang, China [2012011036]
Ultrasonic degradation is one of the recent advanced oxidation processes (AOPs) and proven to be effective for removing low-concentration organic pollutants from aqueous solutions. In this study, removal of fuchsin basic from aqueous solutions by ultrasound was investigated. The effects of operating parameters such as ultrasound power (200 W-500 W), initial pH (3-6.5), and temperature (15, 22, 35, and 60 degrees C) on the ultrasonic degradation were studied. The degradation of fuchsin under ultrasound irradiation basic was found to obey pseudo first-order reaction kinetics. Addition of catalyst Fe(II) had a markedly positive effect on degradation. 84.1% extent of degradation was achieved at initial dye concentration 10 mu mol L-1, ultrasound power 400 W, ultrasound frequency 25 kHz, dosage of Fe(II) 4 mg L-1, initial pH 6.5, and temperature 22 degrees C. But addition of heterogeneous catalyst TiO2 affected degradation slightly. Addition of radical scavenger suppressed fuchsin basic degradation significantly.
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