Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 547843
Title Exceptional Water Desalination Performance with Anion-Selective Electrodes
Author(s) Arulrajan, Antony C.; Ramasamy, Deepika L.; Sillanpää, Mika; Wal, Albert van der; Biesheuvel, P.M.; Porada, Slawomir; Dykstra, Jouke E.
Source Advanced Materials 31 (2019)10. - ISSN 0935-9648
DOI https://doi.org/10.1002/adma.201806937
Department(s) Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) anion-selective electrodes - capacitive deionization - water desalination
Abstract

Capacitive deionization (CDI) typically uses one porous carbon electrode that is cation adsorbing and one that is anion adsorbing. In 2016, Smith and Dmello proposed an innovative CDI cell design based on two cation-selective electrodes and a single anion-selective membrane, and thereafter this design was experimentally validated by various authors. In this design, anions pass through the membrane once, and desalinated water is continuously produced. In the present work, this idea is extended, and it is experimentally shown that also a choice for anion-selective electrodes, in combination with a cation-selective membrane, leads to a functional cell design that continuously desalinates water. Anion-selective electrodes are obtained by chemical modification of the carbon electrode with (3-aminopropyl)triethoxysilane. After chemical modification, the activated carbon electrode shows a substantial reduction of the total pore volume and Brunauer–Emmett–Teller (BET) surface area, but nevertheless maintains excellent CDI performance, which is for the first time that a low-porosity carbon electrode is demonstrated as a promising material for CDI.

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