Rapid and selective oxidation of refractory sulfur-containing micropollutants in water using Fe-TAML/H2O2

被引：9
作者：
Liu, Qingquan [1 ]
Fu, Zhiqiang [1 ]
Wang, Zhongyu [1 ]
Chen, Jingwen [1 ]
Cai, Xiyun [1 ]
机构：
[1] Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn, Dalian Key Lab Chem Risk Control & Pollut Prevent, Dalian 116024, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2022年 / 315卷
基金：
中国国家自然科学基金;
关键词：
Organosulfur compounds; Oxidation; Dissolved organic matter; Reactivity; Selectivity; HYDROGEN-PEROXIDE; KINETICS; DEGRADATION; LIPOPHILICITY; DESTRUCTION; FENAMIPHOS; TOXICITY; FIPRONIL; TRANSFORMATION; CYCLODEXTRIN;
D O I：
10.1016/j.apcatb.2022.121535
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Developments of Fe-TAML/H2O2 systems were conducted for the removal of refractory organic micropollutants in water. Herein, we investigated degradation of 68 structurally diverse sulfur-containing micropollutants (ng/L-mu g/L) in water by Fe-TAML/H2O2, and developed predictive models of the reactivity of Fe-TAML/H2O2 using micropollutant, Fe-TAML and H2O2 data. The micropollutants were usually degraded rapidly in water within 20 min, and the k(obs) values (0.0054 to > 0.47 min(-1)) drastically varied with compounds and/or solution pH. Static complexation and electron transfer between Fe-TAML and compounds were proposed for the high reactivity and selectivity of Fe-TAML/H2O2 toward micropollutant over naturally occurring dissolved organic matter (DOM). The mechanism-based reaction models of Fe-TAML/H2O2 were well extrapolated to large diversities of organic compounds and various types of water. This study indicates that Fe-TAML/H2O2 systems may provide a technical basis for the removal of micropollutants in water, despite the presence of high levels of natural water components.
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页数：9
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