电容去离子技术在水处理领域的研究进展

Research Progress of Capacitance Deionization Technology in the Field of Water Treatment

电容去离子(CDI)技术是一种新型的用于脱盐的水处理技术。通过在具有多孔的电极材料两侧施加电压,使溶液中的离子吸附与两侧的电极上达到去除离子的目的。由于电容去离子具有高效、低能耗、无二次污染等特点,已成为水处理领域研究及应用的热门技术。文章概述电容去离子技术的原理,同时介绍了四种常见的电极材料,包括活性炭、有序介孔炭、碳气凝胶和碳纳米管。

Capacitance deionization technology is a new water treatment technology for desalination.By applying voltage on both sides of the porous electrode material,the ion adsorption in the solution and the electrode on both sides can achieve the purpose of ion removal.Capacitance deionization has become a hot technology in the field of water treatment because of its high efficiency,low energy consumption and no secondary pollution.The article outlines the principles of capacitive deionization and introduces four common electrode materials,including activated carbon,ordered mesoporous carbon,carbon aerogels,and carbon nanotubes.