期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 23, 期 1, 页码 402-407出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-015-5124-0
关键词
1,2-dichloroethane; Benzoic acid; Siderite; Hydroxyl radical; Peroxide hydrogen; Persulfate
资金
- National Natural Science Foundation of China (NSFC) [41272268]
- Ministry of Environmental Protection [201309001-3]
Benzoic acid can affect the iron-oxide mineral dissolution and react with hydroxyl radical. This study investigated its effect on 1,2-dichloroethane removal process by siderite-catalyzed hydrogen peroxide and persulfate. The variation of benzoic acid concentrations can affect pH value and soluble iron concentrations; when benzoic acid varied from 0 to 0.5 mmol/L, pH increased while Fe2+ and Fe3+ concentrations decreased, resulting in 1,2-dichloroethane removal efficiency which decreased from 91.2 to 5.0 %. However, when benzoic acid varied from 0.5 to 10 mmol/L, pH decreased while Fe2+ and Fe3+ concentrations increased, resulting in 1,2-dichloroethane removal efficiency which increased from 5.0 to 83.4 %.
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