在反透膜中运输水的机制和模型:历史,批判性评估和最近的发展
Mohammad Heiranian1,2, Hanqing Fan1, Li Wang1,3
1Department of Chemical and Environmental Engineering, Yale University, New Haven, Connecticut 06520-8286, USA. menachem.elimelech@yale.edu.
Chemical Society reviews
|October 27, 2023
概括
了解反透膜 (RO) 中的水运输是改善海水淡化过程的关键. 本综述分析了模型,有利于通过下一代RO膜的分子动力学模拟支持的孔流机制.
科学领域:
- 膜科学和技术 膜科学和技术
- 水处理和海水淡化工作.
- 材料的物理化学材料的物理化学.
背景情况:
- 水资源短缺是一个关键的全球挑战,推动了对有效海水淡化技术的需求.
- 反透 (RO) 是一种主要的基于膜的方法来增加供水,但需要提高膜性能.
- 对RO膜运输机制的更深入的理解对于技术的发展至关重要.
研究的目的:
- 提供反透 (RO) 技术的全面审查,重点关注膜材料和传输机制.
- 批判性地评估RO膜中普遍存在的水运输模型:溶液扩散和孔径流.
- 识别知识缺口,并为下一代RO膜开发提出未来研究方向.
主要方法:
- 关于RO技术发展的历史回顾.
- 检查RO膜材料的化学和物理性能.
- 对水运输模型的实验和计算发现进行批判性分析,包括分子动力学模拟.
主要成果:
- 该审查批判性地评估了溶液扩散模型的证据,质疑水含量梯度的驱动力.
- 最近的分子动力学模拟在描述水运输时为毛孔流动机制提供了支持.
- 确定了了解RO膜内的水运输现象的关键知识差距.
结论:
- 需要进一步的研究,以充分阐明RO膜中的水运输机制.
- 进一步了解运输现象将加速开发高性能,下一代RO膜.
- 解决这些知识差距对于提高海水淡化效率和打击水资源短缺至关重要.
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