Improving the efficiency and selectivity of Cd2+ removal using a modified resin in the continuous electropermutation process. Issue 11 (23rd July 2020)

• Record Type: Journal Article
• Authors: Mehellou, Ahmed; Delimi, Rachid; Benredjem, Zahia; Saaidia, Samia; Allat, Lamia; Innocent, Christophe
• Is Part Of: Separation science and technology. Volume 55:Issue 11(2020)
• Page Start: 2049
• Page End: 2060
• Publication Date: 2020-07-23
• Subjects: Cadmium -- electropermutation -- modified resin -- alginate -- selective removal; Separation (Technology) -- Periodicals; 660.284205
• DOI: 10.1080/01496395.2019.1614957
• Languages: English
• ISSNs: 0149-6395

Abstract

ABSTRACT: This study was undertaken to enhance the selectivity and the removal efficiency of Cd 2+ from a mixture solution containing Cd 2+ and Na + using continuous electropermutation (EP) with alginate-modified resin (MR). The surface of the MR was characterized via scanning electron microscopy and Fourier transform infrared. The use of the MR in EP process has improved the efficiency and the selectivity for Cd 2+ removal from Cd 2+ (88, 46%), Na + (81, 41%) to Cd 2+ (96, 98%), Na + (51, 47%). The effect of current density and concentration of the electro-regeneration electrolyte on the Cd 2+ removal efficiency was investigated. Abbreviations: AEM, anion-exchange membrane; AG, alginate; CEM, cation-exchange membrane; DS, desorption solution; DVB, divinylbenzene; EDI, electrodeionization; ED, electrodialysis; EP, electropermutation; ERE, electroregeneration electrolyte; FTIR, Fourier transforms infrared; IER, ion-exchange resins; LG, glucuronic acid; MR, modified resin; SEM, scanning electron microscopic; UMR, unmodified resin; DM, D-mannuronic.