Department of Chemistry, Anna University, Sardar Patel Road, Chennai 600025, Tamil Nadu, India.
Water Environ Res. 2013 Jul;85(7):663-70. doi: 10.2175/106143013x13698672321544.
Bipolar ion-exchange membranes, using polystyrene ethylene utylenes polystyrene (PSEBS) with polyvinyl alcohol as the intermediate, were fabricated and evaluated for their potential to remove secondary salts from lab-prepared salt solutions. Experiments were carried out in batch re-circulation mode. The mechanical properties and microscopic images of the membranes were analyzed before, during, and after the electrodialysis process. The performance of the membranes in the stack was evaluated in terms of energy consumption and current efficiency, and found to be 1.07 Wh/mol and 0.67, respectively. Commercially-produced membranes were used as a comparison to the PSEBS-based membranes. In the case of the commercial membrane, polystyrene divinylbenzene, the values for the above parameters were observed to be 2.59 Wh/mol and 0.63, respectively. In addition, other parameters, such as transport number of ions and acid - alkali production, were evaluated for both PSEBS-based and commercially-produced membranes. Results indicated that PSEBS-based membranes exhibited better performance than the commercial membranes.
双极离子交换膜，使用聚苯乙烯乙烯丁二烯苯乙烯（PSEBS）和聚乙烯醇作为中间层，被制备并评估其从实验室制备的盐溶液中去除二级盐的潜力。实验在批处理再循环模式下进行。在电渗析过程之前、期间和之后分析了膜的机械性能和微观图像。通过能量消耗和电流效率评估了膜在堆叠中的性能，分别为 1.07 Wh/mol 和 0.67。商业生产的膜被用作与基于 PSEBS 的膜的比较。在商业膜聚苯乙烯二乙烯基苯的情况下，观察到上述参数的值分别为 2.59 Wh/mol 和 0.63。此外，还评估了基于 PSEBS 的膜和商业生产的膜的离子迁移数和酸碱产生等其他参数。结果表明，基于 PSEBS 的膜的性能优于商业膜。
