PMS activation by natural pyrite for APAP degradation: Underlying mechanism and long-term removal of APAP

被引：15
|
作者：
Wang, Yajie [1 ]
Dong, Xin [1 ]
机构：
[1] Guizhou Minzu Univ, Sch Ecoenvironm Engn, Guiyang 550025, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2023年 / 177卷
关键词：
Pyrite; Activation; Peroxymonosulfate; Acetaminophen degradation; PEROXYMONOSULFATE ACTIVATION; ORGANIC-MATTER; OXIDATION; IRON; REACTIVITY; HYDROXYL; RADICALS; OXIDANTS; INSIGHT; SURFACE;
D O I：
10.1016/j.catcom.2023.106661
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：
Efficient acetaminophen (APAP) degradation in the natural pyrite/peroxymonosulfate (PMS) system under acidic conditions was observed. Approximately 88.8% of APAP degradation was attributed to sulfate radical and the remaining 11.2% of APAP degradation was attributed to singlet oxygen. Sequential experiments and XPS analysis showed that the rapid Fe(III)/Fe(II) cycle was attributed to the sulfur species at the surface of pyrite. Pyrite showed an excellent stability and reusability, which was successfully applied to long-term APAP removal. This study provides a new understanding of the mechanism in pyrite/PMS system and suggests a simply operative and cost-effective method to treat organic contaminants.
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页数：11
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