文献类型：期刊文献

英文题名：Reactive-extraction of 2,3-butanediol from fermentation broth by propionaldehyde: Equilibrium and kinetic study

作者：Li, Yanjun[1];Zhu, Jiawen[1];Wu, Yanyang[1];Liu, Jiaxian[1]

机构：[1]E China Univ Sci & Technol, Chem Engn Res Ctr, Shanghai 200237, Peoples R China

年份：2013

卷号：30

期号：1

起止页码：73

外文期刊名：KOREAN JOURNAL OF CHEMICAL ENGINEERING

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000313234800011)】；

基金：This work was supported by the National Natural Science Foundation of China (NO. 21106039). The authors are grateful to the National Natural Science Foundation of China (Grant NO. 21106039).

语种：英文

外文关键词：2,3-Butanediol; Reactive-extraction; Kinetics; Propionaldehyde; Fermentation Broth

摘要：An effective process was developed to separate 2,3-butanediol (2,3-BD) from fermentation broth (FB) by reactive-extraction. Propionaldehyde (PRA) was used as reactant and reaction product 2-ethyl-4,5-dimethyl-1,3-dioxolane (EDD) acted as extractant. HCl was selected as catalyst. Appropriate conditions were obtained by experiment as follows: 10 degrees C, C-HCl=0.2 mol-L-1, two-stage cross-current extraction, reactant volume ratio (V-PRA : V-FB) for first stage and second stage is 0.10 and 0.05, respectively. The yield rate of 2,3-butanediol for the whole process can reach 90% w/w, and 2,3-butanediol in the final product can be more than 99% w/w. The novel process required less solution and especially had advantages in treating dilute fermentation broth. Furthermore, equilibrium and kinetic study were investigated on the reaction of propionaldehyde and 2,3-butanediol to provide basic data for process development. The results reveal that reaction enthalpy and activation energy of the reaction were -21.84 +/- 2.38 KJ.mol(-1) and 51.97 +/- 2.84 KJ. mol(-1), respectively. Kinetics was well described by pseudo-homogeneous model.