响应曲面法优化降解直接深棕染料废水的低频超声工艺  

Optimization of Ultrasonic De-colorization of Direct Dark Brown MM by Response Surface Methodology

作　　者：郑怀礼[1] 张会琴[1] 何强[1] 朱国成[1] 刘澜[1] 房慧丽[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《土木建筑与环境工程》2010年第5期71-75,共5页Journal of Civil,Architectural & Environment Engineering

基　　金：国家水专项三峡城市项目(2008ZX07315-003);国家自然科学基金项目(20777095);教育部科技创新工程重大项目培育资金项目(708071)

摘　　要：以模拟直接深棕染料废水为对象,采用低频超声技术,探讨初始pH、H2O2投加量及催化剂用量对直接深棕染料废水降解率的影响。应用Box-Behnken中心组合试验和响应面分析法,建立了类Fenton试剂对处理直接深棕染料废水的二次多项式数学模型,确定了超声降解直接深棕染料废水的优化条件:取初始浓度为100 mg/L直接深棕染料废水250 mL,超声功率为250 W,频率28kHz,降解150 min,初始pH、H2O2投加量及催化剂用量分别为3.791、.74 mM1、.65 g。经试验验证,实际值与模型预测值拟合性良好,偏差仅为1.35%。The effects of initial pH of direct dark brown MM dye solution, H2O2 concentration and dosage of Fe-Ni-Mn/Al2O3 on the degradation ratio of direct dark brown MM were studied by using low frequency ultrasound. By the Box-Behnken centre-united experiment design and response surface methodology, a predictive polynomial quadratic model was set up and the optimum extraction conditions were developed. The optimization is that pH of dye wastewater is 3.79, dosage of H2O2 is 1.74 mM, dosage of Fe-Ni-Mn/ Al2O3 is 1.65 g on the initial dye concentration 100 mg/L. 91.09 % of direct dark brown MM was degraded under the optimal conditions. The experimental results are in good agreement with the predicted values of the model equation with 1.35 % deviation.

关 键 词：响应曲面法 超声 降解 

分 类 号：X703[环境科学与工程—环境工程]