writer：Xiquan Cheng, Yongling Zhang, Zhenxing Wang, Zhanhu Guo, Yongping Bai, Lu Shao
keywords：nanofilration, review
source：期刊
Issue time：2014年

When considering energy consumption and environmental issues, solvent-resistant nanofiltration (SRNF) based on

polymeric materials emerges as a process for substituting conventional separation processes of organic solutions, such as distillation,

which consume high amounts of energy. Because SRNF does not involve phase transition, this process can potentially decrease the

energy consumption and solvent waste and increase the yield of active components. Such improvements could significantly benefit a

number of fields, such as pharmaceutical manufacturing and catalysis recovery, among others. Therefore, SRNF has gained a lot of

attention since the recent introduction of solvent-stable polymeric materials in the manufacture of nanofiltration membranes. The

membrane materials and the membrane structures depending on the fabrication methods determine the separation performance of

polymeric SRNF membranes. Therefore, this article gives a comprehensive overview of the current state-of-art technologies of

generating membrane materials and corresponding fabrication methods for SRNF membranes made from polymeric materials

expected to provide the most benefit. The transport mechanisms and the corresponding models of SRNF membranes in organic

media are also reviewed to better understand the mass transfer process. Various SRNF applications, such as in pharmaceutical and

catalyst, among others, are also discussed. Finally, the difficulties and future research directions to overcome the challenges faced by

SRNF processes are proposed.