N1923络合萃取丙酸的研究  

EXTRACTION OF PROPIONIC ACID WITH N1923 BASED ON CHEMICAL COMPLEXATION

作　　者：李斌[1] 常志东[1] 王康[1] 马印臣[1] 雷超[1] 刘会洲[1] 

机构地区：[1]中国科学院过程工程研究所分离科学与工程实验室

出　　处：《环境化学》2007年第5期642-645,共4页Environmental Chemistry

摘　　要：分别以模拟和实际丙酸发酵废水体系为研究对象,采用络合萃取法回收稀溶液中的丙酸,结果表明,对含2%丙酸的水溶液,以45%(体积比)的N1923为萃取剂,以煤油和正辛醇为稀释剂进行萃取,在油水相比1∶4的情况下,单级萃取率可达97%.对实际发酵废水中丙酸的萃取,在二级错流萃取的情况下,也能达到同样的分离效果.有机溶剂循环使用实验表明,经过10次重复利用后其萃取能力基本不变.In this paper, N1923 was selected as extractant, n-octanol and kerosene were selected as diluents for the extraction of propionic acid which was dissolved in water （ model system） or wastewater of fermentation （ real system） . For the model system dissolved 2% propionic acid, the extraction yield can be reached 97% under the optimal condition which the volume concentration of N1923 was 45% in the organic phase, the volume ratio of the organic phase to the aqueous phase was 1： 4. For the real system, the same extraction yield can be reached after two-stage cross-flow extraction and the organic solvent can be recycled by 10 times.

关 键 词：丙酸 络合萃取 N1923 发酵废水 

分 类 号：X132[环境科学与工程—环境科学]