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


Eyupoglu V., Turgut H. I. , Polat E., Kunduracioglu A. , Koc M. E. , Sener Z., ...More

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, vol.38, no.1, pp.110-120, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 1
  • Publication Date: 2017
  • Doi Number: 10.1080/01932691.2016.1146613
  • Title of Journal : JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
  • Page Numbers: pp.110-120
  • Keywords: Alkyl chain length dependent separation, Cr(VI) separation, imidazolium salts, ionic liquids, selective solvent extraction, SUPPORTED LIQUID-MEMBRANE, IONIC LIQUID, SOLVENT-EXTRACTION, CHLORIDE SOLUTIONS, AQUEOUS-SOLUTIONS, METAL-IONS, ACIDIC-SOLUTIONS, CHROMIUM VI, ALAMINE 336, TRANSPORT

Abstract

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.