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Nanofibrous Membrane of Sulfonated Poly(ethylene terephthalate) for Removal of Metal Ions

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In this investigation anelectrospunsulfonated poly(ethylene terephthalate) (SPET) nanofibrous mat was prepared by electrospinning of the SPET solution in trifluoroaceticacid (TFA)/dichloromethane (DCM) mixture. The produced nanofibers had average diameter of 133nm. The performance of the aforementioned membrane for removal ofFe3+,Mg2+ and Ca2+under different conditions of applied pH and pressure wasstudied. The cross flow recirculation ultrafiltration set-up was employed.Under optimum conditions (pH 1.5 and pressure of 1.2 bar) the removal of Fe3+, Mg2+ and Ca2+were 87.1, 77.14 and 34.92, respectively. The filtration mechanism was also determined through blocking laws and permeate volume data. Subsequently, an acceptable agreement (98%) was achieved for internal pore blocking mechanism. Two equilibrium adsorption isotherms: Langmuir and Freundlich were fitted to the salts’ equilibrium sorption data on SPET membrane at different feed concentrations. The Freundlich isotherm was found to well represent the measured adsorption data based on the higher coefficientof determination (r2).
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Keywords: Nanofibrous membrane; adsorption isotherms; filtration mechanism; metal ion filtration

Document Type: Research Article

Publication date: October 1, 2013

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  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
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