HIGH SURFACE CARBON ELECTRODES FOR CAPACITIVE DEIONIZATION

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43913424" target="_blank" >RIV/60461373:22310/17:43913424 - isvavai.cz</a>

Result on the web

<a href="http://www.icct.cz/AngiologyKlon-ICCT/media/system/ICCT2017-full_papers.pdf" target="_blank" >http://www.icct.cz/AngiologyKlon-ICCT/media/system/ICCT2017-full_papers.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

HIGH SURFACE CARBON ELECTRODES FOR CAPACITIVE DEIONIZATION

Original language description

The large amount of water has to be treated worldwide. The most ordinary methods are distillation, reverse osmosis and electrodialysis at present time. Another promising process is capacitive deionisation (CDI) intensively studied in recent years. CDI is a very simple process for salinity reduction of treated water. The key components of CDI are porous carbon electrodes. Electrodes have to exhibit high specific surface area, pore structure suitable for ions capturing and high electron conductivity. The present work is focused on optimization of carbon electrodes and the cell design for CDI technology. Electrodes from various materials were examined in the simple bath cell by cyclic voltammetry and potential pulse chronoamperometry. Selected electrodes were measured also in the plug flow cell by potential pulse chronoamperometry. It was realized scale up of the plug flow cell based on laboratory experiments. Different spacers were measured in the laboratory plug flow cell with reference material Kynol as electrodes. The commercial electrode material Kynol has shown high electrosorption capacity at low potential sweep velocity. But, it was found significant drop of capacity at high potential sweep velocity i.e. limitation by transport of ions in the electrode body. Other electrodes were prepared from various activated carbons (Kuraray YP-80F, Kuraray YP-50F, Penta, ColorSorb-HP90) with binder (PVDF) on the support (Sigraflex - carbon film). Very high capacities have electrodes based on Kuraray activated carbon (KS) at all potential sweep velocities and potential pulse. Therefore these electrodes were used in the laboratory plug flow cell. KS electrodes showed the best results for CDI because concentration changes and electrode capacity are higher than all other electrodes. Electrodes KS show good stability during long term test. Therefore KS was selected for the scale up of CDI cell construction.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

<a href="/en/project/TH01030287" target="_blank" >TH01030287: Capacitive deionization for water treatment and wastewater treatment</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Proceedings of the 5th International Conference on Chemical Technology

ISBN

978-80-86238-65-4

ISSN

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e-ISSN

neuvedeno

Number of pages

6

Pages from-to

204-209

Publisher name

Česká společnost průmyslové chemie (ČSPCH)

Place of publication

Praha

Event location

Mikulov

Event date

Apr 10, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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