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有效和可持续的电化学系统,用于从性聚废物水解中恢复离子
Zhaoxi Chen1, Peng Wang1, An Pei1
1School of Environment and Energy, National Engineering Laboratory for VOCs Pollution Control Technology and Equipment, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, South China University of Technology, Guangzhou, 510006, China.
Small methods
|August 1, 2025
概括
本研究介绍了一种电化学系统,可以有效地从聚回收中回收氧化 (KOH),与传统方法相比,大大降低了成本和化学品的使用.
科学领域:
- 聚合物化学 聚合物化学
- 绿色化学 绿色化学
- 电化学 电化学 电化学
背景情况:
- 催化水解对于聚脱聚合和单体回收是有效的.
- 传统的基于酸的中和工艺 (ABNP) 由于高消耗,在经济上具有挑战性.
- 开发可持续和具有成本效益的回收方法对于废弃聚烯来说至关重要.
研究的目的:
- 开发一种电化学回收和分离系统 (ERSS) 来有效地从聚水解物中回收KOH.
- 克服传统的ABNP在聚回收中的经济和效率限制.
- 为废弃聚烯的性水解回收提供可持续的解决方案.
主要方法:
- 设计了一个带有阴离子交换膜 (CEM) 的三室电解器.
- 一个离子分离模块 (ISM) 与水电解系统集成.
- 在电场下,ERSS利用定向离子迁移进行KOH回收.
主要成果:
- 在真正的PET化物中,ERSS实现了96.4%的KOH法拉第效率.
- 乙烯基醇 (EG) 的高产量为88.4%,p-phthalic acid (PTA) 的高产量为89.3%.
- 该系统经过100小时的稳定运行,与ABNP相比节省了大量成本 (高达62.5%).
结论:
- 开发的ERSS提供了一种高效且具有成本效益的方法,用于聚回收中的KOH回收.
- 这种电化学方法减轻了与传统方法中高使用量相关的经济缺陷.
- 该研究提出了一个可行的解决方案,以实现可持续和经济可行的废弃聚回收.
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