Electro-electrodialysis of hydriodic acid using the cation exchange membrane cross-linked by accelerated electron radiation |
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| Institution: | 1. Chemistry Department, King Abdulaziz University, Jeddah 21589, Saudi Arabia;2. Center of Excellence for Advanced Materials Research, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia;3. Polymer Chemistry Laboratory, Chemistry Department, Faculty of Science, Assiut University, 71516 Assiut, Egypt;4. SRM Research Institute, SRM University, Kattankulathur, Chennai 603203, Tamil Nadu, India;1. Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, CO 80401, United States;2. Department of Polymer Science and Engineering, University of Massachusetts, Amherst, MA 01003, United States;3. X-Ray Science Division, Argonne National Laboratory, Argonne, IL 60439, United States;4. Department of Chemical Engineering, University of Toledo, Toledo, OH 43606, United States |
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| Abstract: | Electro-electrodialysis (EED) of hydriodic acid with HI molality of ca. 9.5 mol/kg was examined in the presence of iodine using a commercial cation exchange membrane (CMB) as a separator. For the increase of the selectivity of proton permeation, the membrane was cross-linked by accelerated electron radiation. The membrane properties (area resistance, ion exchange capacity (IEC), water content) of the cross-linked membranes were measured. The area resistance in 2 mol/dm3 KCl solution of the cross-linked membranes decreased as compared with that of the non-cross-linked membrane (original of CMB membrane). The IEC and water content of cross-linked membranes at each dose rate had almost the same value as that of non-cross-linked membrane. Electro-electrodialysis of hydriodic acid with HI molality of ca. 9.5 mol/kg was examined at 75 °C with 9.6 A/dm2. The cross-linked cation exchange membrane by accelerated electron radiation had higher selectivity of the proton permeation by cross-linking structure of polymer than that of the non-cross-linked membrane. |
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