所属单位：环境与市政工程学院

发表刊物：JOURNAL OF HAZARDOUS MATERIALS

关键字：中文关键字：零价铜；氧化降解；有机污染物；羟基自由基；机理，英文关键字：Zero valent copper; Oxidative degradation; Organic

摘要：Oxidative degradation of organic pollutants and its mechanism were investigated in aqueous solution using zero valent copper (ZVC) under aerobic atmosphere condition. Diethyl phthalate (DEP) was completely oxidized after 120 min reaction by ZVC at initial pH 2.5 open to the air. DEP degradation followed the pseudo-first-order kinetics after the lag period, and the degradation rate of DEP increased gradually with the increase of ZVC dosage, and the decrease of initial pH from 5.8 to 2.0. ZVC required a shorter induction time and exhibited persistent oxidation capacity compared to that of zero valent iron and zero valent aluminium. The mechanism investigation showed that remarkable amount of Cu+/Cu2+ and H2O2 were formed in ZVC acidic system, which was due to the corrosive dissolution of ZVC and the concurrent reduction of oxygen. The addition of tert-butanol completely inhibited the degradation of DEP and the addition of Fe2+ greatly enhanced the degradation rate, which demonstrated that hydroxyl radical was mainly responsible for the degradation of DEP in ZVC acidic system under aerobic atmosphere condition, and the formation of hydroxyl radical was attributed to the Fenton-like reaction of in situ formed Cu+ with H2O2.

备注：文刚

合写作者：王胜军,马军,刘正乾,赵雷

第一作者：徐金兰,黄廷林,文刚

论文类型：期刊论文

卷号：卷：275

期号：期：

页面范围：页：193-199

是否译文：否

发表时间：2014-06-01