Citric acid production by electrodialysis with bipolar membranes

被引：8
|
作者：
Xu, TW [1 ]
Yang, WH
机构：
[1] Univ Sci & Technol China, Dept Appl Chem, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Ctr Resources & Environm Fdn, Hefei 230026, Peoples R China
来源：
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2002年 / 41卷 / 06期
关键词：
bipolar membrane; citric acid; electrodialysis; water dissociation; current efficiency;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Production of citric acid from sodium citrate was carried out by electrodialysis (ED), using bipolar membranes (BP) prepared from poly(phenylene oxide) (PPO). The process feasibility was tested using a laboratory ED-cell with an effective area 20 cm(2). Based on the configuration of BP-cation membranes (C)-BP, the performances of various sodium sulfate concentrations and sodium citrate concentrations are compared and discussed in terms of ionic transport and ion exchange. It is suggested that, in such an operation, the optimum concentration range be 0.5-1.0 M for sodium citrate and 0.25-1.5 M for sodium sulfate from the viewpoint of energy consumption, current efficiency and acid concentration. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：519 / 524
页数：6
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