导电膜在膜蒸馏水处理中的应用:焦耳加热、膜污染/结垢/润湿缓解和监测。
Applications of electrically conductive membranes in water treatment via membrane distillation: Joule heating, membrane fouling/scaling/wetting mitigation and monitoring.
机构信息
Sino-Canadian Joint R&D Center for Water and Environmental Safety/Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China; Nankai University & Cangzhou Bohai New Area Institute of Green Chemical Engineering, No. 2 Sun Simiao Road, Cangzhou 061108, PR China.
Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, 637141, Singapore.
出版信息
Water Res. 2023 Oct 1;244:120511. doi: 10.1016/j.watres.2023.120511. Epub 2023 Aug 20.
Membrane distillation (MD) is a thermally driven separation process that is driven by phase change. The core of this technology is the hydrophobic microporous membrane that prevents mass transfer of the liquid while allowing the vapor phase to pass through the membrane's pores. Currently, MD is challenged by its high energy consumption and membrane degradation due to fouling, scaling and wetting. The use of electrically conductive membranes (ECMs) is a promising alternative method to overcome these challenges by inducing localized Joule heating, as well as mitigating and monitoring membrane fouling/scaling/wetting. The objective of this review is to consolidate recent advances in ECMs from the standpoint of conductive materials, membrane fabrication methodologies, and applications in MD processes. First, the mechanisms of ECMs-based MD processes are reviewed. Then the current trends in conductive materials and membrane fabrication methods are discussed. Thereafter, a comprehensive review of ECMs in MD applications is presented in terms of the different processes using Joule heating and various works related to membrane fouling, scaling, and wetting control and monitoring. Key insights in terms of energy consumption, economic viability and scalability are furnished to provide readers with a holistic perspective of the ECMs potential to achieve better performances and higher efficiencies in MD. Finally, we illustrate our perspectives on the innovative methods to address current challenges and provide insights for advancing new ECMs designs. Overall, this review sums up the current status of ECMs, looking at the wide range of conductive materials and array of fabrication methods used thus far, and putting into perspective strategies to deliver a more competitive ECMs-based MD process in water treatment.
膜蒸馏(MD)是一种热驱动的分离过程,由相变驱动。该技术的核心是疏水性微孔膜,它阻止液体的传质,同时允许蒸汽相通过膜的孔。目前,MD 面临着由于结垢、结垢和润湿而导致的高能耗和膜降解的挑战。使用导电膜(ECM)是一种有前途的替代方法,可以通过诱导局部焦耳加热,以及减轻和监测膜结垢/结垢/润湿,来克服这些挑战。本综述的目的是从导电材料、膜制备方法和 MD 工艺中的应用的角度,综合最近关于 ECM 的进展。首先,回顾了基于 ECM 的 MD 过程的机理。然后讨论了导电材料和膜制备方法的当前趋势。此后,从使用焦耳加热的不同过程和与膜结垢、结垢和润湿控制和监测有关的各种工作的角度,全面综述了 ECM 在 MD 应用中的情况。就能源消耗、经济可行性和可扩展性提供了关键见解,为读者提供了 ECM 在 MD 中实现更好性能和更高效率的潜力的整体视角。最后,我们说明了我们对解决当前挑战的创新方法的看法,并为推进新的 ECM 设计提供了见解。总的来说,本综述总结了 ECM 的现状,着眼于迄今为止使用的各种导电材料和一系列制备方法,并对在水处理中提供更具竞争力的 ECM 基 MD 工艺的策略进行了展望。