[1]王安郡,林治全,孙绍芳,等.Cu(Ⅱ)/Na2SO3体系降解磺胺甲恶唑的效能及机理[J].中国给水排水,2023,39(7):95-101.
　WANGAn-jun,LINZhi-quan,SUNShao-fang,et al.Performance and Mechanism of Cu(Ⅱ)/Na2SO3 System for Sulfamethoxazole Degradation[J].China Water & Wastewater,2023,39(7):95-101.
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Cu(Ⅱ)/Na2SO3体系降解磺胺甲恶唑的效能及机理

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第7期 页码: 95-101 栏目: 出版日期: 2023-04-01
Title:
Performance and Mechanism of Cu(Ⅱ)/Na2SO3 System for Sulfamethoxazole Degradation
作者:
王安郡1， 林治全1， 孙绍芳1， 厉鹏远1， 高明昌2， 邱立平3,4
（1.济南大学 土木建筑学院，山东 济南 250022；2.济南大学 水利与环境学院，山东 济南 250022；3.山东省功能材料水质净化工程技术研究中心，山东 济南 250022；4.山东建筑大学 市政与环境工程学院，山东 济南 250101）
Author(s):
WANG　An-jun1， LIN　Zhi-quan1， SUN　Shao-fang1， LI　Peng-yuan1， GAO　Ming-chang2， QIU　Li-ping3，4
（1. School of Civil Engineering and Architecture， University of Jinan， Jinan 250022， China； 2. School of Conservancy and Environment， University of Jinan， Jinan 250022， China； 3. Shandong Province Engineering Technology Research Center for Water Purification Functional Material， Jinan 250022， China； 4. School of Municipal and Environmental Engineering， Shandong Jianzhu University， Jinan 250101， China）
关键词:
Cu(Ⅱ);  Na2SO3;  磺胺甲恶唑;  硫酸根自由基;  羟基自由基
Keywords:
Cu(Ⅱ);  Na2SO3;  sulfamethoxazole;  sulfate radical;  hydroxyl radical
摘要:
利用Cu（Ⅱ）催化Na2SO3降解磺胺甲恶唑（SMZ），并探究降解效能及机理。结果表明，Cu（Ⅱ）/Na2SO3体系降解SMZ的最佳反应条件如下：pH为7、SMZ初始浓度为0.3 mg/L、Cu2+浓度为0.10 mmol/L、Na2SO3浓度为0.50 mmol/L、温度为25 ℃，反应60 min后SMZ降解率达到61.3%。电子顺磁共振波谱结果和醇抑制剂实验结果证明，Cu（Ⅱ）/Na2SO3体系降解SMZ的主要活性物质是·OH和SO4·-，其贡献率分别为31.6%和64.8%。虽然水体背景成分氯离子（Cl-）和碳酸氢根离子（HCO3-）对SMZ的降解起到一定抑制作用，但是Cu（Ⅱ）/Na2SO3体系对实际水体中SMZ仍有较好的降解效能。
Abstract:
Sulfamethoxazole (SMZ) was degraded by Cu(Ⅱ) catalyzed Na2SO3, and the degradation efficiency and mechanism were explored. The optimum reaction conditions of Cu(Ⅱ)/Na2SO3 system for SMZ degradation were as follows: pH of 7, initial SMZ concentration of 0.3 mg/L, Cu2+ concentration of 0.10 mmol/L, Na2SO3 concentration of 0.50 mmol/L and temperature of 25 ℃, and the degradation rate of SMZ reached 61.3% after 60 min reaction under these conditions. The results of electron paramagnetic resonance (EPR) and alcohol inhibitor experiments showed that ·OH and SO4·- were the main active substances in Cu(Ⅱ)/Na2SO3 system for SMZ degradation, and their contribution rates were 31.6% and 64.8%, respectively. Although the background ions such as chloride ion (Cl-) and bicarbonate ion (HCO3-) inhibited the degradation of SMZ to some extent, the Cu(Ⅱ)/Na2SO3 system still had a good performance for SMZ degradation in actual water bodies.
更新日期/Last Update: 2023-04-01