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.
Next conference: 11-15 October, 2026, Seoul, Korea. Click here for more information
We are delighted to announce that the International Working Group on Capacitive Deionization and Electrochemical Ion Separation will host the 8th International CDI&E Conference in Seoul, Korea, in 11-15 October 2026.
The central theme of CDI&E 2026 is “Carbon Neutral Technologies” and “Sustainable Development” in deionization processes. The conference will highlight not only the latest advancements in core CDI and electrosorption technologies but also address pre-treatment and post-treatment strategies, emphasizing a holistic approach toward sustainable and energy-efficient water and resource recovery solutions.
This event will provide a global platform to explore:
- Cutting-edge developments in electrode and membrane materials
- Advances in theoretical and modeling approaches
- Integrated processes and novel system configurations
- Emerging frontiers in battery deionization, selective separations, resource recovery, and CO₂ capture and conversion
Beyond scientific exchange, CDI&E 2026 will offer an opportunity to share innovative ideas, present your latest research, and build new collaborations within the international community.
We warmly invite you to join us in Seoul, one of Asia’s most vibrant and dynamic cities, for this exciting gathering of researchers, innovators, and practitioners dedicated to shaping the future of sustainable deionization technologies.
Important dates
- Abstract submission: 1 January 2026 - 30 April 2026
- Early bird registration: 1 January 2026 - 30 June 2026
We are pleased to announce that the next conference organized by the International Working Group on Capacitive Deionization and Electrosorption will be hosted in Wrocław in May 2025 (18-22). This next edition of the will also cover the latest developments in the field of membrane separations. Join us for this exciting journey through the latest ...continue reading 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 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 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 8th International CDI&E Conference in Seoul, Korea, 11-15 October 2026
7th Conference of Electrochemical and Membrane Separations
CDI publication in PNAS: Electrochemical removal of amphotheric ions
Next CDI conference: CDI&E 2023 in Taipei!
Successful CDI&E 2021 Atlanta conference!