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田泽辉, 关小红, 董红钰. 吡啶强化亚铁活化过硫酸盐降解有机污染物[J]. 环境科学与技术, 2024,47(S1):1-7.
田泽辉, 关小红, 董红钰. Bipyridine Enhanced the Degradation of Organic Contaminants in the Fe(Ⅱ)/Peroxymonosulfate Process[J]. 2024, 47(S1): 1-7.
田泽辉, 关小红, 董红钰. 吡啶强化亚铁活化过硫酸盐降解有机污染物[J]. 环境科学与技术, 2024,47(S1):1-7. DOI: 10.19672/j.cnki.1003-6504.1899.23.338.
田泽辉, 关小红, 董红钰. Bipyridine Enhanced the Degradation of Organic Contaminants in the Fe(Ⅱ)/Peroxymonosulfate Process[J]. 2024, 47(S1): 1-7. DOI: 10.19672/j.cnki.1003-6504.1899.23.338.
适用p H范围窄是限制亚铁/过一硫酸盐(Fe(Ⅱ)/PMS)体系进一步推广应用的关键因素之一,亟需开发拓宽Fe(Ⅱ)/PMS体系适用p H范围的策略。该文旨在探究含氮络合剂1
10-邻菲罗啉(phen)和2
2'-联吡啶(bipy)对Fe(Ⅱ)/PMS体系降解有机污染物效能和机制的影响。结果表明,引入phen和bipy可显著促进Fe(Ⅱ)/PMS体系对富含供电子基团的有机污染物苯酚和双氯芬酸的降解。当phen/Fe(Ⅱ)和bipy/Fe(Ⅱ)的摩尔比分别为3.0和4.5时,phen/Fe(Ⅱ)/PMS和bipy/Fe(Ⅱ)/PMS体系对苯酚的去除效果最佳。phen/Fe(Ⅱ)/PMS和bipy/Fe(Ⅱ)/PMS体系在p H 3.0~9.0条件下均能有效降解苯酚。化学探针、电子顺磁共振和淬灭剂实验结果表明,phen/Fe(Ⅱ)/PMS和bipy/Fe(Ⅱ)/PMS体系产生的活性氧化剂包括~1O_2和Fe(Ⅳ),且~1O_2对这2个体系中苯酚的降解起主要作用。
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