According to the development of capacitive deionization(CDI)technology,the research progress on selective separation of salt ions and heavy-metal ions with different valences using CDI technology are summarized.The mechanism for selective separation of these ions by CDI technology are analyzed from three aspects including physical size effect of ions,selective adsorption of electrode materials,and ion exchange interaction.
capacitive deionizationsalt ionsheavy metal ionsselective separationseparation mechanism
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