Membrane capacitive deionization using graphene electrodes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F19%3AN0000097" target="_blank" >RIV/28676092:_____/19:N0000097 - isvavai.cz</a>
Result on the web
<a href="http://www.czemp.cz/cs/workshop-students-presentation-fulltexts/wsp-2019-fulltexty" target="_blank" >http://www.czemp.cz/cs/workshop-students-presentation-fulltexts/wsp-2019-fulltexty</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Membrane capacitive deionization using graphene electrodes
Original language description
The aim of this work was desalination of water using novel environment-friendly and economic technology. Desalination of brackish or seawater is an effective method to solve water scarcity. As an energy-efficient desalination technology, capacitive deionization (CDI) and membrane capacitive deionization (MCDI) attracts more attention in recent years. In MCDI process, in front of each electrode ion-exchange membrane is placed, to improve salt removal efficiency and to increase electrode recovery. In this research, graphene-based electrodes were used due to their interesting features. Several desalination experiments were done in constant voltage mode with different concentrations of NaCl solution to determine maximum adsorption capacity of graphene-based electrodes. Maximum salt removal efficiency 15.6% was achieved with initial concentration of NaCl solution 0.005 M and applied voltage 1 V. Adsorption capacity of electrodes under these conditions was only 8.93 mg/g. Maximum adsorption capacity of 22.44 mg/g was achieved with NaCl solution with initial concentration 0.2 M and applied voltage 1 V. After performing several adsorption cycles under these conditions, the same amounts of adsorbed and desorbed salt were reached, thus the 100% recovery of electrode was achieved.
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/LO1418" target="_blank" >LO1418: Progressive development of the Membrane Innovation Centre</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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