Optimization of the electrodeionization process: comparison of different resin bed configurations

被引：7
|
作者：
Lakehal, Aicha [1 ]
Bouhidel, Kamel-Eddine [1 ]
机构：
[1] Univ Batna, Fac Sci, Dept Chem, Chem & Environm Chem Lab,Team Water Chem Desalina, Batna 05000, Algeria
来源：
DESALINATION AND WATER TREATMENT | 2017年 / 86卷
关键词：
Electrodeionization; Efficiency; Ion exchange; Electrodialysis; HIGH-PURITY WATER; ION-EXCHANGE MEMBRANES; EDI PROCESS; NUMERICAL-SIMULATION; ELECTRO-REGENERATION; BIPOLAR MEMBRANES; CURRENT-DENSITY; HEAVY-METALS; WASTE-WATER; REMOVAL;
D O I：
10.5004/dwt.2017.21326
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Optimization of the EDI resin bed poses a serious challenge for the design. This research work deals with this optimization problem. It is based on the comparison of five different configurations (homogenous/mixed, cationic, anionic, inert and two layers ordered bipolar beds). The performance of the EDI systems was evaluated in terms of removal efficiency (RE), current efficiency (CE), power consumption (P) and was evaluated by the comparison of I-V curves. The ionic mobility was also calculated using Nernst-Planck equation. Our results are summarized by this efficiency order: two layers ordered bipolar bed > homogenous mixed bed > cationic bed > anionic bed > inert bed. This is particularly due to the bipolar effect between resin layers and the polarization decrease at the cation-exchange membrane and anion-exchange membrane surfaces.
引用
收藏
页码：96 / 101
页数：6
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