络合萃取法处理高浓度苯酚废水  

The Treatment of Highly Concentrated Phenol-Containing Wastewater by Complexation Extraction

作　　者：赵文生[1] 孙燕[2] 冯威[2] 

机构地区：[1]吉林化工学院,吉林长春132022 [2]吉林大学水资源与水环境吉林省高等学校重点实验室,吉林长春130021

出　　处：《山东化工》2015年第17期183-186,189,共5页Shandong Chemical Industry

摘　　要：以三辛胺为络合剂,正辛醇为稀释剂,通过络合萃取-反萃取的方式,回收高浓度苯酚废水中的苯酚。利用响应曲面法研究了络合剂浓度、油水比、废水的p H值对萃取效率的影响。结果表明:以体积浓度为33.8%的三辛胺为络合剂,正辛醇为稀释剂,油水比为0.28,p H值为4.69,苯酚络合萃取率可以达到99.82%,此时萃余水相中苯酚的浓度为36 mg/L,完全可以实现苯酚的回收再利用。Complexation extraction and back extraction was used for the recovery of phenol in the highly concentrated phenol -containing waste water.Trioctylamine （TOA） and octanol acted as complexing solvent and extractant, respectively. The influence of eomplexing solvent concentration, oil - water ratio and pH value of wastewater on the extraction performance was investigated by response surface methodology. The results showed that the optimum extraction process was that： Use TOA as complexing solvent with volume concentration of 33.8%, octanol as extractant, under the condition that, the oil -water ration was 0.28 ,the pH value was 4.69, the extraction efficiency was 99.82% and the solubility of phenol in water was 36 mg/L, resulting in an achievement of the recovery of phenol.

关 键 词：苯酚 络合萃取 响应曲面法 回收利用 

分 类 号：X703.1[环境科学与工程—环境工程]