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电去离子技术结合了电渗析和离子交换使离子在树脂中瞬时积累、降低体系电阻、电极上水解产生氢离子与氢氧根离子使树脂在线再生,以去除离子为目的制备纯水和高纯水.这些被去除的离子在浓室中富集,可发展一种新型浓缩分离提取技术,现已逐渐应用于微量重金属、稀有金属、营养盐、有机酸碱甚至气体的回收.本文论述了这一连续电提取浓缩技术的原理及应用并探讨发展趋势,以期引起电化学研究工作者的关注.
Electro-deionization combines electrodialysis and ion-exchange to allow ions to accumulate instantaneously in the resin, reducing system resistance, regenerating hydrogen ions and hydroxide ions on the electrodes to regenerate the resin online, and preparing pure water and high purity water for ion removal. These enriched ions are enriched in concentrated compartments, and a new enrichment and separation technology can be developed, which has been gradually applied to the recovery of trace heavy metals, rare metals, nutrients, organic acids and bases and even gases. The principle and application of electric extraction and concentration technology and its development trend are expected to attract the attention of electrochemical researchers.