响应面优化CCl_4增强超声降解左旋氧氟沙星模拟废水  

Degradation of levofloxacin by ultrasound /CCl_4:optimization by response surface methodology

作　　者：李娟[1] 魏红[1] 李克斌[2] 王勤勤[2] 李妮妮[1] 

机构地区：[1]西安理工大学西北水资源与环境生态教育部重点实验室,西安710048 [2]西北大学化学与材料科学学院合成与天然功能分子化学教育部重点实验室,西安710069

出　　处：《环境工程学报》2013年第10期3767-3772,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51009115);陕西省教育厅科学研究计划项目(2013JK0881);西安理工大学创新基金(106211302)

摘　　要：利用响应面优化实验设计方法对CCl4增强超声降解左旋氧氟沙星模拟废水的影响因素进行探讨和分析,考察了溶液初始pH值、超声功率、左旋氧氟沙星初始浓度的影响。应用Box-Behnken中心组合设计得到一个二次多项式数学模型,确定了US/CCl4降解左旋氧氟沙星的优化条件:初始pH值6.8,超声功率189 W,左旋氧氟沙星初始浓度为5 mg/L时,左旋氧氟沙星的去除率达到最大(82.99%)。经实验验证,实际值与模型预测值吻合性良好,偏差仅为0.036%。Response surface methodology was employed to investigate the effects of initial pH value, ultra- sonic power and levofloxacin initial concentration on levofloxacin degradation by US/GEl4 system. By the Box- Behnken centre-united experiment design, a predictive polynomial quadratic model was set up and the optimum extraction conditions were developed. The optimum initial pH,ultrasonic power, and levofloxacin initial concen- tration were 6.8, 189 W, and 5 mg/L, respectively. And maximum degradation efficiency of 82.99% was a- chieved under the optimal conditions. The experimental results were in good agreement with the predicted values of the model equation, with only 0. 036% deviation.

关 键 词：左旋氧氟沙星 超声波 CCL4 降解 响应面优化法 

分 类 号：X703.1[环境科学与工程—环境工程]