电化学同步产生臭氧降解磺胺甲(口恶)唑的研究
Research on electrochemical generation of ozone for synchronous electrochemical degradation of sulphamethoxazole
晏语 1吴春笃 1薛明明 1张波2
作者信息
- 1. 江苏大学环境与安全工程学院,江苏 镇江 212013
- 2. 江苏大学环境与安全工程学院,江苏 镇江 212013;常州江苏大学工程技术研究院,江苏 常州 213164
- 折叠
摘要
以磺胺甲(口恶)唑(SMX)为研究对象,探究电化学同步产生臭氧体系降解抗生素废水的效能及其降解机理.选取电流强度、硫酸盐质量分数、初始pH为自变量,以SMX的降解率为响应值,通过Box-Behnken设计方法进行试验方案设计.采用响应面分析法对试验结果进行模拟及分析,研究各因素及其交互作用对SMX降解率的影响.结果表明,在电流为 4.3 A、硫酸盐质量分数为0.27%、pH为5.59 时,运行30 min的SMX降解率最高为99.705%;体系中主要的活性物质包含臭氧、单线态氧、羟基和超氧自由基,其中臭氧和羟基自由基起主要作用.
Abstract
Sulfamethoxazole(SMX),an antibiotic,is taken as the test object to explore the efficiency of electrochemical synchronous ozone-generating system for degradation of antibiotics-containing wastewater and the degradation mechanism.Current intensity,sulfates content,and initial pH are selected as independent variables,and the degradation rate of SMX is determined by the Box-Behnken design method.Response surface analysis is employed to simulate and analyze the effect of each factor and their interaction on the degradation rate of SMX.The results show that the highest degradation rate of SMX is 99.705%within 30 min when the current intensity is 4.3 A,the content of sulfates is 0.27%,and pH is 5.59.The mechanism analysis shows that the main active substances in the system include O3,1 O2,·OH and·O-2,among which O3 and·OH play major roles.
关键词
磺胺甲(口恶)唑/电化学氧化/臭氧氧化/响应曲面/机理Key words
sulfamethoxazole/electrochemical oxidation/ozone oxidation/response surface/mechanism引用本文复制引用
基金项目
江苏省重点研发计划(BE2022338)
常州市应用基础研究项目(CJ20220025)
出版年
2024
NETL
NSTL
万方数据