An assessment of alkyl chain length effect of symmetric İmidazolium salts as a carrier for selective separation of Cr(VI)

• Published in: Journal of dispersion science and technology Vol. 38; no. 1; pp. 110 - 120
• Main Authors: Eyupoglu, Volkan, Turgut, Halil Ibrahim, Polat, Emrah, Kunduracioglu, Ahmet, Koc, Muharrem Ekrem, Sener, Zubeyde, Kumbasar, Recep Ali
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 02-01-2017; Taylor & Francis Ltd
• Subjects: Alkyl chain length dependent separation; Assessments; Carriers; Chains; Correlation; Cr(VI) separation; imidazolium salts; ionic liquids; Ions; Optimization; selective solvent extraction; Solvent extraction; Solvent extraction processes; Stripping; Symmetry
• ISSN: 0193-2691; 1532-2351
• DOI: 10.1080/01932691.2016.1146613

Selective solvent extraction (SSX) of Cr(VI) and recovery was evaluated by using a homologous series of symmetric imidazolium bromide salts (SIMs) having various alkyl chain length. Therefore, propyl, pentyl, hexyl, octyl, and decyl substituted SIMs were used as an ion carrier. The executive parameters affecting both extraction and stripping conditions were investigated for optimization. Finally, a direct correlation was observed a between increasing alkyl chain length and selective Cr(VI) extraction from acidic solutions containing Cr(VI), Fe(III), Co(II), Cd(II), Ni(II). This relationship was reversed in the stripping conditions. Optimal extraction and stripping were obtained for SIM5 and SIM2 as 97.49% and 70.00%, respectively.