Mild stir-assisted membrane dispersion for enhancing propionic acid extraction  

作　　者：Xiaoyan Zheng Dong Feng Liangrong Yang Junfeng Hui Jiemiao Yu Qiyu Meng Huizhou Liu Daidi Fan 

机构地区：[1]Shaanxi Key Laboratory of Degradable BiomedicalMaterials,Shaanxi R&D Center of Biomaterials and Fermentation Engineering,School of Chemical and Engineering,Northwest University,Xi'an,710069,China [2]College of Life Sciences,Northwest University,Xi'an,710069,China [3]Key Laboratory of Green Process and Engineering,State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Chinese Academy of Sciences University,Beijing 100190,China

出　　处：《Chinese Journal of Chemical Engineering》2019年第11期2666-2674,共9页中国化学工程学报（英文版）

基　　金：Supported by the Chinese High Technology Research and Development Program(2015CB251402,17-163-12-ZD-001-013-01);the National Natural Science Foundation of China(21676215,21676273,U1507203);China Petroleum Enterprise Cooperation Project(PRIKY17094);China Postdoctoral Science Foundation(2018M633556);the Youth Innovation Promotion Association,CAS(2016043);the Shaanxi Provincial Science Foundation(2017SF-201,2018JQ2052).

摘　　要：Mild stir-assisted membrane dispersion extraction(MDE) method was employed to enhance propionic acid(HA)extraction and compared to the mechanical stirred extraction(MSE) method. Triocylamine(TOA) and tributyl phosphate(TBP) were chosen as model extractant to extract HA. Firstly, droplet size and the size distribution of organic phase were analyzed, and then the effects of phase ratio, extractant and HA concentration on extraction performance were investigated. Comparing the two extraction methods, the results show mild stir-assisted MDE method reduced the mass transfer equilibrium time compared to MSE method. The mass transfer mechanism was explored by analyzing mass transfer resistance. Mild stir-assisted MDE had less total mass transfer resistance than MSE. When the extractant concentration was 40%, the extraction process was controlled by organic phase mass transfer process with HA volume fraction was 1% and controlled by both of reaction process and organic phase mass transfer process when HA concentration increased to 5%. This work may provide a new type of extraction method for the recovery of organic carboxylic acid.Mild stir-assisted membrane dispersion extraction(MDE) method was employed to enhance propionic acid(HA)extraction and compared to the mechanical stirred extraction(MSE) method. Triocylamine(TOA) and tributyl phosphate(TBP) were chosen as model extractant to extract HA. Firstly, droplet size and the size distribution of organic phase were analyzed, and then the effects of phase ratio, extractant and HA concentration on extraction performance were investigated. Comparing the two extraction methods, the results show mild stir-assisted MDE method reduced the mass transfer equilibrium time compared to MSE method. The mass transfer mechanism was explored by analyzing mass transfer resistance. Mild stir-assisted MDE had less total mass transfer resistance than MSE. When the extractant concentration was 40%, the extraction process was controlled by organic phase mass transfer process with HA volume fraction was 1% and controlled by both of reaction process and organic phase mass transfer process when HA concentration increased to 5%. This work may provide a new type of extraction method for the recovery of organic carboxylic acid.

关 键 词：MEMBRANE DISPERSION EXTRACTION Propionic acid Triocylamine Tributyl PHOSPHATE 

分 类 号：TQ028.32[化学工程]