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Sorption and permeation studies for isopropanol + water mixtures using alginate based highly water selective nanocomposite membranes

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Abstract

Nanocomposite membranes (NCMs) were prepared by using the solution casting technique by incorporating the different amounts like 6, 8, 10 wt.% of Preyssler type heteropolyacid nanoparticles to the sodium alginate. Prepared NCMs were utilized for the sorption and permeation studies for the aqueous isopropanol solutions at different concentrations. Sorption experiment enabled the study of interactions between the components of the mixture and the polymer. Flory-Huggins interaction parameters between the permeating molecules and polymer and solubility parameters were determined to explain the sorption behavior of the NCMs. Permeation properties of the NCMs were tested by applying them for pervaporation dehydration of IPA at different concentrations. Different PV parameters like separation factor, flux, Permeance and selectivity were calculated to explain the permeation behavior of the NCMs. In this study, increased sorption, permeation and selectivity was observed for the NCMs than pristine sodium alginate membrane, indicating that NCMs are efficient for PV dehydration of the IPA. Solution-diffusion model was adopted to study the mass transfer through the membrane by calculating the diffusion coefficients.

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Acknowledgment

GSG thanks University Grants Commission, New Delhi, India for providing the financial support under 37-336/2009(SR). MGM thanks UGC for providing research fellowship under UGC-BSR programme.

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Authors and Affiliations

  1. Department of chemistry, Shivaji University, Kolhapur, MS, 416 004, India

    Mukund G. Mali & Gavisiddappa S. Gokavi

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  1. Mukund G. Mali
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  2. Gavisiddappa S. Gokavi
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Correspondence to Gavisiddappa S. Gokavi.

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Mali, M.G., Gokavi, G.S. Sorption and permeation studies for isopropanol + water mixtures using alginate based highly water selective nanocomposite membranes. J Polym Res 19, 9976 (2012). https://doi.org/10.1007/s10965-012-9976-4

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  • DOI: https://doi.org/10.1007/s10965-012-9976-4

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