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Membrane Capacitive Deionization for Desalination and Water Reuse

Updated: Oct 24, 2022


Join Dr. Chia-Hung Hou, Professor and Chief Executive, NTU Water Innovation Center, NTU, at the WFI 2022 Annual Conference on December 7, 2022. He will be addressing Alternative water sources, such as desalination and wastewater reuse as strategic solutions to ensure water security.


Membrane Capacitive Deionization for Desalination and Water Reuse

Water scarcity is one of the critical issues throughout the world today. Alternative water sources such as desalination (e.g., brackish water and seawater) and wastewater reuse have been introduced as strategic solutions to ensure water security. Note that the interdependence between water and energy is well-recognized as an important global issue. Most recently, membrane capacitive deionization (MCDI), inspired by energy storage devices (e.g., supercapacitors), is a promising desalination technology to separate ions from water associated with high water recovery, less chemical additive, and environmental friendliness.

In MCDI, ions can be electrostatically captured within the highly porous electrodes via electrical double-layer formation in the charging step, and then be released into the solution by discharging the electrodes. By placing ion-exchange membranes (IEMs) in front of each electrode, the desalination performance can be significantly improved with high salt adsorption capacity and charge efficiency. The presentation will introduce the fundamental of MCDI with its engineering implementation. We will demonstrate a pilot-scale MCDI system to reclaim the secondary effluents from municipal wastewater treatment plan. MCDI also provides great engineering opportunities for water recycling and reuse in high-tech industries.



2022 Product of the Year Nomination

The award is set to promote product development in the filtration and separation industry for a clean, healthy, and sustainable world. Find more about the 2022 Product of the Year Nomination HERE.




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