Center for Research Excellence in Desalination & Water Treatment and Center for Environment and Water, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Adv Colloid Interface Sci. 2020 Nov;285:102276. doi: 10.1016/j.cis.2020.102276. Epub 2020 Oct 8.
Over the past few years, oil-water separation techniques have been widely researched due to influences of oil pollution. The oil pollution is significantly increasing day-by-day because of ever-increasing usage of oil in daily routine of humans and industrial activities. The separation of water from oil-water emulsions/mixtures through membrane technology has provided absolute necessary qualities such as low cost, eco-friendly, easy-operation and energy efficient. To build up the filter membranes with special super-wettability properties and bearing excellent multifunctional applications is highly attractive research area in current decade. However, evolution of membrane technology suffered many deficiencies including severe fouling, short-standing against high flow speed, surface wettability disorders, non-reusable and limited application. In this review article, we outline the recent advances in membrane technology with respect to special super-wettability properties, enhanced characteristics for purpose to serve oil-water separation, and more specifically its multifunctional applications. Therefore, this study is made for membranes having other than applications, in addition to oil-water separation. Further, the wetting phenomenon of these multifunctional membranes is addressed and highlighted the brief overview of surface wetting types including Superhydrophobic-Superoleophilic membranes, Superhydrophilic-Superoleophobic membranes, and Superhydrophilic-underwater Superoleophobic membranes. Moreover, relative fabrication procedures and multifunctional applications of developed multifunctional super-wetting membranes are also discussed along with wetting behavior. Finally, the current developments and achievements for oil-water separation multifunctional super-wetting membranes are concluded. Besides, it also explores the future challenges and obstacles associated to these membranes. Hence, this article provides brief overview of advancement of oil-water separation based multifunctional super-wetting membranes and ended with new thoughts of further modification/enhancement.
在过去的几年中，由于石油污染的影响，油水分离技术得到了广泛的研究。由于人类日常生活和工业活动中对石油的使用量不断增加，石油污染每天都在显著增加。通过膜技术将水从油水乳液/混合物中分离出来，提供了低成本、环保、易于操作和节能等绝对必要的特性。在当前十年中，构建具有特殊超润湿性和优异多功能应用的过滤膜是一个极具吸引力的研究领域。然而，膜技术的发展存在许多缺陷，包括严重的结垢、对高速流的短时间抵抗、表面润湿性紊乱、不可重复使用和应用有限。在这篇综述文章中，我们概述了膜技术在特殊超润湿性特性、增强油水分离目的的特性以及更具体的多功能应用方面的最新进展。因此，除了油水分离外，本研究还针对具有其他应用的膜进行了研究。此外，还讨论了这些多功能膜的润湿现象，并重点介绍了表面润湿类型的简要概述，包括超疏水-超亲油膜、超亲水-超疏油膜和超亲水-水下超疏油膜。此外，还讨论了所开发的多功能超润湿膜的相对制备工艺和多功能应用以及润湿行为。最后，总结了用于油水分离的多功能超润湿膜的最新发展和成就。此外，还探讨了这些膜相关的未来挑战和障碍。因此，本文简要概述了基于油水分离的多功能超润湿膜的进展，并提出了进一步改进/增强的新思路。
