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    Transportation of Cr(VI) through calix[4]arene based supported liquid membrane

    Year: 2013

    Journal: Separation and Purification Technology, Volume 118, 30 October 2013, Pages 470–478, 20131119

    Authors: Imam Bakhsh Solangi 1 2, Fatih Özcan 1 3, Gulsin Arslan 1, Mustafa Ersöz 1 3

    Organizations: 1: Department of Chemistry, Selçuk University, Campus, 42031 Konya, Turkey, 2: Dr. M.A. Kazi Institute of Chemistry, University of Sindh, Jamshoro 76080, Pakistan, 3: Advanced Technology Research and Application Center, Selçuk University, 42075 Konya, Turkey

    The present study describes a comparative transportation of Cr(VI) across supported liquid membranes (SLMs) containing p-tert-butylcalix[4]arene diamide derivative bearing pyridinium units (3 and 4). These carriers were impregnated onto the supported membrane i.e. Celgard® 2500. The impregnated membranes were characterized by using various analytical techniques such as Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FT-IR), Atomic Force Microscopy (AFM) and contact angle measurements. The transport efficiency of 3 and 4 for Cr(VI) from the source to stripping phase has been evaluated. The experiments have been conducted involving the effect of pH, role of NaOH in stripping phase, concentration of Cr(VI), amount of carrier and contact time. Moreover, from the results of stability test, the effect of other co-existing metal ions and field study confirmed the applicability of p-tert-butylcalix[4]arene diamide derivative bearing pyridinium units (4) for the selective recovery of Cr(VI) in the acidic medium. The study also confers its impact on human health, reinstatement of polluted sites and other fields of material science.