Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7826082 | Reactive and Functional Polymers | 2018 | 9 Pages |
Abstract
In this work, we have investigated a series of anion exchange membranes (AEMs) based on brominated poly(2,6-dimethyl-1,6-phenylene oxide) (BPPO) tethered with three saturated heterocyclic quaternary ammonium groups (QAs) of 1-methylpyrrolidine (MPY), N-methylpiperidine (MPRD), and 4-methylmorpholine (MMPH) for electrodialysis (ED) applications, respectively, along with BPPO with trimethylamine (TMA) and Neosepta AMX made for comparison. Our investigations demonstrate that the optimized BPPO-MPRD, having an ion exchange capacity of 1.67â¯mmolâ¯gâ1, is highly stable in aqueous KOH (1â¯molâ¯Lâ1) with ion exchange capacity retention ratio of 85.1% and hydroxide conductivity retention ratio of 80.3% at 60â¯Â°C for over 15â¯days, relative to other heterocyclic amine decorated AEMs. In ED application process, BPPO-MPRD shows the NaCl removel ratio of 98.8% and energy consumption of 12.58 kWhâ¯kgâ1, outperforming the Neosepta AMX (97.4% & 15.76â¯kWhâ¯kgâ1). The results demonstrate that the as-prepared BPPO-MPRD AEM can be applied in ED.
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Authors
Yuliang Jiang, Junbin Liao, Shanshan Yang, Jian Li, Yanqing Xu, Huimin Ruan, Arcadio Sotto, Bart Van der Bruggen, Jiangnan Shen,