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.


 

CDI publication in PNAS: Electrochemical removal of amphotheric ions

Water treatment is required for a sustainable potable water supply and can be leveraged to harvest valuable elements. Crucial to these processes is the removal of charge pH-dependent species from polluted water, such as boron, ammonia, and phosphate. These species can be challenging for conventional technologies. Currently, boron removal requires several reverse-osmosis stages, combined with ...continue reading

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Next CDI conference: CDI&E 2023 in Taipei!

We are delighted to share with you that the next 6th International Conference on Capacitive Deionization and Electrosorption (CDI&E) will take place in Taipei city in 2023. Taking this opportunity, we sincerely invite you to join us at this conference and take advantage of this special occasion to renew contacts, exchange ideas, and share your ...continue reading

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Successful CDI&E 2021 Atlanta conference!

We thank all that attended and actively participated in the Virtual Atlanta CDI&E 2021. We were pleased to have ~150 registered attendees and nearly > 100 people attend every day. We also had 40 fantastic talks, and 50 engaging posters. Many of which were from students and post-doctoral scholars. While we would have rather host ...continue reading

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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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