Capacitive deionization: a promising technology for water defluoridation: a review

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dc.contributor.author Alfredy, Tusekile
dc.contributor.author Elisadiki, Joyce
dc.contributor.author Chande Jande, Yusufu Abeid
dc.date.accessioned 2021-10-04T09:28:10Z
dc.date.available 2021-10-04T09:28:10Z
dc.date.issued 2021-08-30
dc.identifier.uri https://repository.rsif-paset.org/xmlui/handle/123456789/127
dc.description Review Article en_US
dc.description.abstract Capacitive deionization (CDI) is among the promising technologies employed for water purification. CDI has been studied for the removal of various ionic species from water including fluoride ion (F−) with promising results. However, there is no comprehensive literature that summarizes the use of CDI for water defluoridation applications. Therefore, this review paper critically analyzes different electrode materials that have been studied for water defluoridation, their electrosorption capacities and F− removal efficiencies. It further discussed the parameters that influence CDI efficiency during defluoridation and point out the issues of F− selectivity when co-existing with other ions in the solution. We can conclude that different electrode materials have shown different abilities in electrosorption of F−. The carbon-based materials possess high surface area and good electrical conductivity which is paramount for ion adsorption but gives lack selectivity for F− removal. Metal oxides and hydroxides have been reported with improved electrosorption capacity and high selectivity to F− due to the ion exchange between the F− and the hydroxyls surface of the metal oxides/hydroxides. Apart from the good performance of these materials for defluoridation, the discovery of actual practical use of the electrode materials for defluoridation for commercial scale is still a need. en_US
dc.publisher Water Supply en_US
dc.subject Capacitive deionization, water defluoridation en_US
dc.title Capacitive deionization: a promising technology for water defluoridation: a review en_US
dc.type Article en_US

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