CDI & Electrosorption

Capacitive deionization (CDI) is a promising new technology for water desalination making use of an electrical voltage applied between two 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 5 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.

Electrosorption is the fundamental process underlying the CDI technology describing the interaction of molecular species and ions with charged materials for chemical conversion and/or temporary storage and separation. With the multitude of molecular species that can be of interest, ranging from metal and salt ions (lithium, arsene) all the way up to protein and designer molecules such as pharmaceuticals, and the multitude of solid and porous materials that one can think of, the possibilities are enormous.

Though at present the CDI&E website may have a focus on CDI, we expect to see increasing numbers of contributions where the fundamental phenomenon of electrosorption is applied for novel applications in water treatment, health and energy.

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


 

Position paper on “What is CDI?”

Following the CDI conference recently held in the Republic of Korea, July 2017, twenty scientists active in the field of CDI worked on a joint position paper, putting forward the proposition that CDI defines a class of desalination technologies that share common operational principles and relevant metrics, thereby joining under one common term different CDI ...continue reading

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CDI-E Korea 2017 a major success !

Last week's CDI-E's conference was a big success. 180 participants gathered for three full conference days in the heart of Seoul, Republic of South Korea. The conference, hosted by prof. Jeyong Yoon and his team of Seoul National University, proved invaluable in informing participants of all the latest developments in CDI technology, both from an ...continue reading

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Website CDI-E 2017 online !

The upcoming 3rd world conference on CDI&E "Capacitive Deionization, Electrosorption, and Electrodialysis" will be held July 3-6, 2017, in Seoul, Republic of Korea. Following earlier conferences in The Netherlands and Germany, we expect an attendance of over 200 delegates discussing all aspects of water treatment and desalination using electrochemical methods based on porous electrodes and/or ...continue reading

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Complementary surface charge enhances CDI-performance

Two recent papers with authors from the US, The Netherlands, and Israel, convincingly show the relevance of chemical charge residing in the carbon electrodes ("immobile", or "complementary" charge) to enhance salt adsorption capacity (SAC) of CDI electrodes. In the more theoretical paper of the two, published OPEN ACCESS in Colloids and Interfaces Science Communications, the ...continue reading

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CDI publication statistics through the roof !

... and the field of Capacitive Deionization keeps on growing at an increasing speed ! While over 60 scientific publications are now written and published annually, citations to the CDI literature have grown from a number less than 100 per year before 2010, to about 2000 per year at the end of 2015, and this number continues to ...continue reading

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