Continuous Electrodeionization: Production of High-Purity Water without Regeneration Chemicals

Abstract

Electrochemical deionization (EDI), also called electrodeionization, is a process that removes ionizable species from liquids using ionically active media and an electrical potential to influence ionic transport. Electrodeionization processes can be batch or continuous. Continuous Electrodeionization (CEDI) is an electrodeionization process where the ion transport properties of the active media are the primary scale-up parameters. There are also batch electrodeionization processes, such as capacitive deionization, where the ion capacity properties of the active media are the primary sizing parameters.