摘要：Benzotriazole (BTA) is a recalcitrant contaminant that is widely distributed in aquatic environments. This study explored the effectiveness of sulfate radical-based advanced oxidation process in degrading BTA (SR-AOP). The sulfate radical was generated by heat activation of persulfate (PS). Our results show alkaline pH promoted the BTA degradation. The solution pH also affected the speciation of total radicals. Sulfate radical () predominated at acidic pH while hydroxyl radical (HO center dot) predominated at basic pH. High temperature, high PS concentration and low BTA concentration promoted the BTA degradation. Influence of water matrix constituents on the reaction kinetics was assessed. We found that <= 10 mM of Cl- promoted the reaction, but 100 mM Cl- inhibited it. was similar to Cl-. Br- and inhibited the reaction while did not affect the reaction. of <= 10 mM did not affect the reaction, but 100 mM of inhibited it. Eleven degradation intermediates were identified using ultra-high solution Orbitrap mass spectrometry. Based on the intermediates identified, possible reaction pathways were proposed. Overall, SR-AOP can effectively mineralize BTA, but water matrix constituents greatly influenced the reaction kinetics and thus should be carefully considered for its practical application.

关键字：Peroxydisulfate; heat activation; advanced oxidation process; wastewater; drinking water

ISSN号：0959-3330

卷、期、页：卷: 42期: 2页: 238-247

发表日期：2021-01-15

影响因子：2.212500

期刊分区（SCI为中科院分区）：四区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：ENVIRONMENTAL TECHNOLOGY

通讯作者：丁祎,池丽萍,杨欣,仲英杰,王志恒

第一作者：马杰,史权

论文类型：期刊论文

论文概要：马杰,丁祎,池丽萍,杨欣,仲英杰,王志恒,史权，Degradation of benzotriazole by sulfate radical-based advanced oxidation process，ENVIRONMENTAL TECHNOLOGY，2021，卷: 42期: 2页: 238-247

论文题目：Degradation of benzotriazole by sulfate radical-based advanced oxidation process