文献类型：期刊文献

英文题名：Insight into CaO2-based Fenton and Fenton-like systems: Strategy for CaO2-based oxidation of organic contaminants

作者：Xue, Yunfei[1,2];Sui, Qian[1,2];Brusseau, Mark L.[3];Zhou, Wei[4];Qiu, Zhaofu[1];Lyu, Shuguang[1,2]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]Univ Arizona, Sch Earth & Environm Sci, Soil Water & Environm Sci Dept, Tucson, AZ 85721 USA;[4]Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

年份：2019

卷号：361

起止页码：919

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20185306322671);WOS:【SCI-EXPANDED(收录号:WOS:000457096400090)】；

基金：This study was financially supported by a grant from the International Academic Cooperation and Exchange Program of Shanghai Science and Technology Committee (18230722700). The contributions of Mark Brusseau were supported by the NIEHS Superfund Research Program of the United States (PS 42 ES04940).

语种：英文

外文关键词：Calcium peroxide; Fenton system; Fenton-like system; Hydroxyl radicals; Application strategy

摘要：This study conducted a comparison of the CaO2-based Fenton (CaO2/Fe(II)) and Fenton-like (CaO2/Fe(III)) systems on their benzene degradation performance. The H2O2, Fe(II), Fe(III), and HO center dot variations were investigated during the benzene degradation. Although benzene has been totally removed in the two systems, the variation patterns of the investigated parameters were different, leading to different benzene degradation patterns. In terms of the Fe(II)/Fe(III) conversion, the CaO2/Fe(II) and CaO2/Fe(III) systems were actually inseparable and had the inherent mechanism relationships. For the CaO2/Fe(III) system, the initial Fe(III) must be converted to Fe(II), and then the consequent Fenton reaction could be later developed with the regenerated Fe (II). Moreover, some benzene degradation intermediates could have the ability to facilitate the transformation of the Fe(III) to Fe(II) without the classic H2O2-associated propagation reactions. By varying the Fe(II) dosing method, an effective degradation strategy has been developed to take advantage of the two CaO2-based oxidation systems. The proposed strategy was further successfully tested in TCE degradation, therefore extending the potential for the application of this technique.