期刊
CHEMOSPHERE
卷 40, 期 2, 页码 125-130出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0045-6535(99)00213-1
关键词
goethite; hydrogen peroxide; Fenton reaction; chlorophenols; AOPs
The use of goethite (alpha-FeOOH) and hydrogen peroxide was recently found that they could effectively oxidize organic compounds. The study was to investigate the effect of goethite particle size: goethite concentration, Fe2+ and Fe3+ on the 2-chlorophenol oxidation. Results indicated that 2-chlorophenol can be decomposed with hydrogen peroxide catalyzed by goethite and the oxidation rate increased with decreasing goethite particle size. 2-Chlorophenol degradation was almost retarded with 0.8 g/l of goethite because ferrous ions could not be produced at this condition. Addition of Fe2+ and Fe3+ can enhance the catalytic oxidation rate of 2-chlorophenol very efficiently. In conclusion, the main mechanism of goethite catalyzing hydrogen peroxide to oxidize 2-chlorophenol may be due to the catalysis of ferrous ions and goethite surface. (C) 1999 Elsevier Science Ltd. All rights reserved.
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