UV/Fe^(2+)/过硫酸盐降解噻虫啉的响应曲面法优化研究  

Degradation of thiacloprid via UV/Fe^(2+)/persulfate system:Optimization using response surface methodology

作　　者：石月 彭湃 刘艳丽[1] 吴丽[1] 张祖麟 杨列[1] SHI Yue;PENG Pai;LIU Yan-li;WU Li;ZHANG Zu-lin;YANG Lie(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China;Agile Environ,Guangzhou 510623,China)

机构地区：[1]武汉理工大学资源与环境工程学院,湖北武汉430070 [2]广州雅居乐环保集团,广东广州510623

出　　处：《中国环境科学》2021年第11期5153-5159,共7页China Environmental Science

基　　金：国家自然科学基金资助项目(51878523)。

摘　　要：构建了紫外-亚铁联合活化过硫酸盐的体系用于高效降解噻虫啉(Tiacloprid,THIA),以Fe^(2+)浓度、过硫酸盐(Persulfate,PS)浓度、pH值、紫外功率为因变量,THIA去除率为响应值,通过中心复合设计法(Central Composite Design,CCD)建立因素和响应值之间的数学模型.模型拟合结果显示,当Fe^(2+)浓度为0.318mmol/L,PS浓度为0.544mmol/L,pH值为3.054和紫外功率为58.133W时,模型预测THIA降解率最高为100%.验证实验结果(98.4%)与预测值基本一致,证明了响应曲面法用于优化紫外-亚铁联合活化过硫酸盐体系降解THIA的可行性.Ultraviolet synergic ferrous based catalysts were tested to achieve effective degradation of thiacloprid(THIA)from wastewater.In this study,the effect of degradation of THIA were conducted on the different degradation parameters of various of concentration of synergic ferrous,concentration of persulfate(PS),p H value and UV intensity.Central Composite Design(CCD)method was used to establish a mathematical model between degradation parameters and the removal rate of THIA.The results showed that UV/Fe^(2+)/PS system could result in 100% of degradation rate of THIA when using 58.133 W of UV intensity,0.318 mmol/L of ferrous irons,0.544 mmol/L of PS and 3.054 of p H.It was in a good agreement with the experimental results(98.4%)which suggested that response surface methodology can be well used to optimize the degradation of THIA in the UV/Fe^(2+)/PS system.

关 键 词：噻虫啉 过硫酸盐 紫外活化 亚铁活化 响应曲面 

分 类 号：X703[环境科学与工程—环境工程]