期刊
WATER RESEARCH
卷 105, 期 -, 页码 479-486出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2016.09.019
关键词
Quinone-hydroquinone; Fenton; Cysteine; Iron redox cycle
资金
- Natural Science Foundation of China [21007089, 21377126, 41573115]
Quinone hydroquinone analogues have been proven to be efficient promoters of Fenton reactions by accelerating the Fe(III)/Fe(II) redox cycle along with self-destruction. However, so far there is little information on non-quinone-hydroquinone cocatalyst for Fenton reactions. This study found that cysteine, a common aliphatic amino acid, can strongly enhance Fenton degradation of organic pollutants by accelerating Fe(III)/Fe(II) redox cycle, as quinone-hydroquinone analogues do. Further, cysteine is superior to quinone-hydroquinone analogues in catalytic activity, H2O2 utilization and atmospheric limits. The cocatalysis mechanism based on the cycle of cysteineicystine was proposed. (C) 2016 Elsevier Ltd. All rights reserved.
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