基于BPPO/PECH的离子交换膜,具有通过扩散透析进行酸回收的净结构
Haiyang Shen1, Yifei Gong1, Wei Chen1
1School of Materials & Chemical Engineering, Anhui Jianzhu University, Hefei 230022, China.
International journal of molecular sciences
|May 27, 2023
概括
这项研究开发了一种新的离子交换膜 (AEM) 来自化聚2,6-二甲基-1,4-氧化物 (BPPO) 和聚化 (PECH),用于工业酸回收. 新型BPPO/PECH膜与商业选择相比,表现出优越的性能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 阳离子交换膜 (AEM) 对于从工业废水中提取酸来说至关重要.
- 提高AEM性能对于高效和可持续的工业流程至关重要.
研究的目的:
- 开发一种新的离子交换膜 (AEM),以提高酸回收的性能.
- 调查基于BPPO/PECH的AEM的结构-财产关系.
主要方法:
- 通过使用化聚2,6-二甲基-1,4-氧化物 (BPPO) 和聚化 (PECH) 作为聚合物骨干,合成了一种新的AEM.
- 将BPPO/PECH聚合物与N,N,N,N-四甲基-1,6-二胺 (TMHD) 进行四重化,形成一个交联膜.
- 评估了物理化学特性,机械性能,热稳定性和耐酸性.
- 评估的酸透析系数 (UH+) 和分离因子 (S) 用于酸回收.
主要成果:
- 准备好的BPPO/PECH AEM表现出良好的机械性能,热稳定性和抗酸性.
- 取得了从0.0173-0.0262 m/h的酸透析系数 (UH+) 的范围.
- 获得的分离系数 (S) 介于 24.6 和 27.0.0 之间.
- 与商用DF-120B BPPO膜相比,已经证明了更高的UH+和S值.
结论:
- 开发的BPPO/PECH离子交换膜显示出通过扩散透析 (DD) 方法进行酸回收应用的巨大潜力.
- 由于不同的PECH含量,可调节的特性允许针对特定的工业废水条件进行优化.
- 这项研究有助于推进膜技术,以实现可持续的工业酸管理.
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