利用中空纤维更新液膜技术从稀溶液中提取柠檬酸  

Extraction of citric acid from dilute solutions with hollow fiber renewal liquid membrane technology

作　　者：李皓淑[1] 任钟旗[1] 张卫东[1] 林微[1] 

机构地区：[1]北京化工大学化工资源有效利用国家重点实验室,北京100029

出　　处：《食品科技》2007年第10期141-144,共4页Food Science and Technology

基　　金：国家自然科学基金项目(20576008)。

摘　　要：采用一种新型的液膜技术——中空纤维更新液膜技术(HFRLM),以30%N235(三辛/癸基叔胺)/20%正辛醇/煤油为液膜相,NaOH溶液为反萃剂,从稀溶液中提取柠檬酸。结果表明,中空纤维更新液膜技术可实现对柠檬酸的同步分离和浓缩,提取率达98%以上,浓缩倍数可达9倍以上,表明该技术在柠檬酸稀溶液提取方面具有广阔的应用前景。A new liquid membrane technique, called hollow fiber liquid membrane （HFRLM）, was used for extraction of citric acid from dilute solutions with 30% N235 /20% n-octanol/kerosene as solvent phase and NaOH as stripping phase. Results showed that HFRLM could carry out the simultaneous extraction and concentration processes in the same stage, the extraction efficiency was higher than 98%, and the concentrated factor was over 9. It is indicated that HFRLM technique had a good prospect for application in the extraction of citric acid from dilute solutions.

关 键 词：中空纤维更新液膜 柠檬酸 N235 提取 

分 类 号：TS201[轻工技术与工程—食品科学]