摘要
利用两室型双极膜电渗析法从乳酸钠溶液中制备乳酸.探讨了电渗析过程中的转化率、电流效率、能耗、回收率等指标.实验结果表明,JCM-1膜比DF120膜更适合于本实验过程;在乳酸钠的转化率为95%的条件下,乳酸的回收率达到90%以上,电流效率在60%左右,电能消耗在2.5～3.5 kW.h/kg之间.膜的耐久性还需提高.
Lactic acid is recovered from sodium lactate solutions using bipolar membrane electrodialysis（BMED） with two compartments.Conversion factor of sodium lactate,current efficiency,energy consumption and yield of lactic acid are studied.The results show that the performance of cation exchange membrane JCM-I is better than that of DF120.The yield of lactic acid could exceed 90%,the current efficiency is about 60% and the electric energy consumption is between 2.5～3.5 kW·h/kg at 95% conversion factor of sodium lactate.The membranes need to be improved for long-term use.
出处
《膜科学与技术》
CAS
CSCD
北大核心
2007年第4期66-69,79,共5页
Membrane Science and Technology
基金
国务院桥办科学基金(GQ2018)
关键词
双极膜
电渗析
乳酸
bipolar membrane
electrodialysis
lactic acid
