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Concentration polarization controlin stand-alone and hybrid forward osmosis systems: Recent technological advancements and future directions
Chemical Engineering Research and Design ( IF 3.7 ) Pub Date : 2021-12-21 , DOI: 10.1016/j.cherd.2021.12.031
W. Suwaileh 1 , M. Zargar 2 , A. Abdala 1 , F.A. Siddiqui 3 , M. Khiadani 2 , A. Abdel-Wahab 1
Affiliation  

Forward osmosis (FO) has received significant attention recently. FO has high potentials for integration with other water treatment technologies. However, concentration polarization (CP) remains a significant challenge in FO membrane applications. In particular, internal CP (ICP) reduces the permeability of FO membranes by nearly 80%. The development of FO processes and their applications can greatly benefit from strategies that detect and control CP in standalone and integrated FO systems. This requires consideration of FO membrane structures, materials, configurations, operating conditions, and modification and cleaning strategies. This review provides a state-of-the-art analysis of recent literature on CP detection and control with a specific focus on ICP as a major issue in FO processes. This helps to understand current CP mitigation strategies and their challenges and prospects. The first section reviews the structures of different FO membranes and related CP mechanisms. Research on CP and the impacts of various parameters on its magnitude are then discussed, followed by a review of CP phenomena in hybrid FO processes and applied ICP control strategies. Finally, recommendations for future research in CP detection and control are made. This review serves as a valuable reference for future research on FO processes and may contribute to developing more ICP-resistant FO membranes.



中文翻译:

独立和混合正向渗透系统中的浓度极化控制:最近的技术进步和未来方向

正向渗透 (FO) 最近受到了极大的关注。FO 具有与其他水处理技术集成的巨大潜力。然而,浓差极化 (CP) 在 FO 膜应用中仍然是一个重大挑战。特别是,内部 CP (ICP) 将 FO 膜的渗透性降低了近 80%。FO 过程及其应用程序的开发可以极大地受益于在独立和集成 FO 系统中检测和控制 CP 的策略。这需要考虑 FO 膜结构、材料、配置、操作条件以及修改和清洁策略。这篇综述对最近关于 CP 检测和控制的文献进行了最先进的分析,特别关注 ICP 作为 FO 过程中的一个主要问题。这有助于了解当前的 CP 缓解策略及其挑战和前景。第一部分回顾了不同 FO 膜的结构和相关的 CP 机制。然后讨论了对 CP 的研究以及各种参数对其幅度的影响,然后回顾了混合 FO 过程中的 CP 现象和应用的 ICP 控制策略。最后,对CP检测和控制的未来研究提出了建议。该综述可作为未来 FO 工艺研究的宝贵参考,并可能有助于开发更耐 ICP 的 FO 膜。随后回顾了混合 FO 过程中的 CP 现象和应用的 ICP 控制策略。最后,对CP检测和控制的未来研究提出了建议。该综述可作为未来 FO 工艺研究的宝贵参考,并可能有助于开发更耐 ICP 的 FO 膜。随后回顾了混合 FO 过程中的 CP 现象和应用的 ICP 控制策略。最后,对CP检测和控制的未来研究提出了建议。该综述可作为未来 FO 工艺研究的宝贵参考,并可能有助于开发更耐 ICP 的 FO 膜。

更新日期:2021-12-27
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