Capacitive Deionization

Capacitive Deionization (CDI) is a promising new technology for water desalination making use of an electrical voltage applied between two capacitive electrodes. Even at rather low voltages of 1.2 V, desalinated water can be produced. This “direct current” low voltage can easily be produced using a small solar panel. The academic interest in CDI has increased rapidly in the past 10 years as can be read in the news items. Companies, from startups and SMEs to multinationals, have research activities and commercial deployment in the field of CDI.

Deionization refers to desalination of water, either completely, or partially, and also includes selective ion removal.

Electrosorption is the fundamental process underlying capacitive electrodes, which describes the storage and release of ions in electrodes.

This website is maintained under the responsibility of the International Working Group on CDI&E, who also invites you to attend upcoming CDI&E conferences and symposia.


 

A message from our chair Prof. Peng Liang (Tsinghua University)

Many times when I passed by the conference venue of our 2019 CDI&E conference, it reminds me of the wonderful days we were together to share our passion and knowledge towards better understanding and application of CDI-related technologies. Those CDI&E conferences held every other year have been great opportunities for all top researchers and engineers in ...continue reading

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CDI&E 2021 Atlanta conference – Abstract submission is now open!

We are less than four months away from the next CDI&E conference, to be held from May 11 onward in Atlanta, USA. As you may understand, we had to decide to move this year's conference online, but it will be just as important as ever to attend and to present your work to your colleagues, ...continue reading

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New review article on ion-selective separation using CDI

Yesterday a new OPEN ACCESS review was published in the prestigious RSC journal Energy & Environmental Science (impact factor 33), which was composed by an international consortium of authors from The Netherlands (Wageningen University & Research, Wetsus), USA (Yale University), Israel (Technion), South Korea (Seoul National University), and China (Tsinghua University). It features a comprehensive analysis of ...continue reading

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New book released: Introduction to Physics of Electrochemical Processes

Maarten Biesheuvel (Wetsus) and Jouke Dykstra (Wageningen University), members of the CDI&E working group, are pleased to announce the release of their second book in their series on “Physics of Electrochemical Processes”. This book focuses more strongly on electrode processes and is therefore relevant to the CDI community. Both books can still be downloaded free-of-charge from ...continue reading

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Pre-release of ‘Physics of Electrochemical Processes’

The pre-release of the book 'Physics of Electrochemical Processes' (ISBN: 9789090332581) by P.M. Biesheuvel and J.E. Dykstra can now be downloaded from the website www.physicsofelectrochemicalprocesses.com free of charge. Topics include: Ch. 1: The extended Frumkin isotherm describes the capacitive salt adsorption in intercalation materials Ch. 2: The Donnan model for the electrical double layer structure ...continue reading

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