Bromide Ions Specific Removal and Recovery by Electrochemical Desalination

Izaak Cohen, Barak Shapira, Eran Avraham, Abraham Soffer, Doron Aurbach

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48 Scopus citations

Abstract

Removal and recovery of bromide ions by electro-oxidation and electro-reduction are presented using hybrid physical adsorption and capacitive deionization cells, which contain activated carbon cloth electrodes. This is a proof of concept research with results, which indicate that when comparing the removal and recovery quantities of bromide and chloride ions (starting with the same initial concentration of 0.05 M for both salts), the desalination capacity of the bromide ions is larger by almost 2 orders of magnitude than that of the chloride ions; thus, we obtained specific desalination of bromide ions from a solution containing chloride ions. Removal and recovery of 3.5 mmol of bromide ions were achieved by a working electrode with 1 g of activated carbon cloth, and the calculated energy consumption for the removal and recovery of 1 g of bromide ions was about 2.24 kJ/g.

Original languageEnglish
Pages (from-to)6275-6281
Number of pages7
JournalEnvironmental Science and Technology
Volume52
Issue number11
DOIs
StatePublished - 5 Jun 2018

Bibliographical note

Publisher Copyright:
© 2018 American Chemical Society.

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