| Literature DB >> 25460751 |
Zhouwei Miao1, Xiaogang Gu1, Shuguang Lu2, Xuke Zang1, Xiaoliang Wu1, Minhui Xu1, Landry Biyoghe Bi Ndong1, Zhaofu Qiu1, Qian Sui1, George Yuzhu Fu3.
Abstract
The performance of Fe(2+)-catalyzed sodium percarbonate (SPC) stimulating the oxidation of perchloroethylene (PCE) in groundwater remediation was investigated. The experimental results showed that PCE could be completely oxidized in 5 min at 20 °C with a Fe(2+)/SPC/PCE molar ratio of 8/8/1, indicating the effectiveness of Fe(2+)-catalyzed SPC oxidation for PCE degradation. Fe(2+)-catalyzed SPC oxidation was suitable for the nearly neutral pH condition, which was superior to the conventional Fenton oxidation in acidic condition. In addition, the investigations by using hydroxyl radical scavengers and free radical probe compounds elucidated that PCE was degraded mainly by hydroxyl radical (HO) oxidation in Fe(2+)/SPC system. In conclusion, Fe(2+)-catalyzed SPC oxidation is a highly promising technique for PCE-contaminated groundwater remediation, but more complex constituents in groundwater should be carefully considered for its practical application.Entities:
Keywords: Fe(2+)-catalyzed oxidation; Groundwater remediation; Hydroxyl radical (HO()); Percarbonate; Perchloroethylene (PCE)
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Year: 2014 PMID： 25460751 DOI： 10.1016/j.chemosphere.2014.09.065
Source DB: PubMed Journal: Chemosphere ISSN： 0045-6535 Impact factor: 7.086