响应面分析法优化絮凝酵母SPSC01去除Cr(Ⅵ)  

Response surface methodology for optimizing Cr(Ⅵ) removal by flocculating yeast SPSC01

作　　者：陈丽杰[1] 汤晓燕[1] 袁文杰[1] 王晓珊[1] 

机构地区：[1]大连理工大学生命科学与技术学院,大连116024

出　　处：《环境工程学报》2015年第8期3773-3779,共7页Chinese Journal of Environmental Engineering

基　　金：辽宁省科学技术计划项目(2012229008)

摘　　要：采用响应面法对絮凝酵母SPSC01去除水中Cr(Ⅵ)的条件进行优化。根据Box-Behnken Design的中心组合实验设计原理,采用三因素三水平的响应面分析方法,优化絮凝酵母SPSC01对Cr(Ⅵ)的去除。二阶模型的方差分析表明,预测响应值和实际值相符合,针对初始浓度为50 mg/L的Cr(Ⅵ)废水,在絮凝酵母SPSC01用量为10.89 g/L干重、温度为40℃、初始pH为2时的去除条件最优,二阶模型分析预测絮凝酵母SPSC01在4 h时对Cr(Ⅵ)去除率可达95.47%,在此条件下,实测Cr(Ⅵ)的去除率达93.06%,说明利用响应面法优化絮凝酵母SPSC01对Cr(Ⅵ)的去除条件是可行的。In this study, the response surface methodology was employed to optimize Cr（VI） removal by flocculating yeast. Experiments were conducted based on Box-Behnken design and three independent factors viz flocculating yeast dosage, initial pH and temperature were investigated. At an initial Cr（ VI ） concentration of 50 mg/L, up to 93.06% of Cr（VI） was removed under optimal conditions of flocculating yeast dosage of 10.89 g/ L, under pH 2, and temperature of 40℃ , in good agreement with the predicted value of 95.47% by the quadrat- ic model. These results demonstrated that the response surface methodology was a useful tool for optimizing Cr （VI） removal by flocculating yeast SPSC01.

关 键 词：絮凝酵母 SPSC01 Cr(Ⅵ) 去除 响应面分析 优化 

分 类 号：X52[环境科学与工程—环境工程] X172