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当前位置: 首页 > 文章 > 棉籽糖纯化过程中电渗析脱盐研究 食品科学 2016,37 (1) 28-32
Position: Home > Articles > Electrodialytic Desalination in Raffinose Purification FOOD SCIENCE 2016,37 (1) 28-32

棉籽糖纯化过程中电渗析脱盐研究

作  者：
段舒然;鲍宗必;闻光东;陈丽芬;杨亦文
单  位：
浙江大学化学工程与生物工程学院生物质化工教育部重点实验室
关键词：
棉籽糖;电渗析;脱盐;纯化
摘  要：
为了除去棉籽糖提取液中的盐分杂质,本实验采用电渗析法脱盐,考察了不同操作电压和循环流量下,棉籽糖提取液脱盐率变化和能耗变化。结果表明:电渗析对棉籽糖提取液中的盐分去除非常有效,在10~20 V的电压范围内,操作电压越大,脱盐率越高,继续升高电压,脱盐率保持不变;在20~60 L/h的流量范围内,循环流量越小,溶液脱盐率越高。在操作电压为25 V,循环流量为20 L/h,脱盐120 min后,脱盐率可达到91.2%,棉籽糖回收率达94.5%。若达到相同的脱盐率,在20~60 L/h的流量范围内,流速越低,能耗越小;在20~30 V电压范围内,电压越高,能耗越大。利用电渗析法对棉籽糖提取液脱盐具有一定的应用价值。
译  名：
Electrodialytic Desalination in Raffinose Purification
作  者：
DUAN Shuran;BAO Zongbi;WEN Guangdong;CHEN Lifen;YANG Yiwen;Key Laboratory of Biomass Chemical Engineering, Ministry of Education, College of Chemical and Biological Engineering,Zhejiang University;
关键词：
raffinose;;electrodialysis;;desalination;;purification
摘  要：
A desalination process with electrodialysis to remove the salt impurities in raffinose extract solution was introduced and the effects of different operation voltages and flow rates on desalination ratio and energy consumption were discussed in this study. Results showed that the ratio of desalination increased with increasing voltage from 10 to 20 V to reach a plateau as the voltage was further increased to 30 V, and was inversely correlated with circulation flow rate in the range of 20–60 L/h. A desalination ratio of 91.2% was obtained after 120 min at a voltage of 25 V and flow rate of 20 L/h with a raffinose recovery of 94.5%. At the same desalination ratio, energy consumption increased with increasing voltage from 20 to 30 V, and also increased with increasing flow rate in the range of 20–60 L/h. The electrodialysis has the potential for application in the desalination process for raffinose purification.

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