Advances in Polymer Technology-Recent Advances in Polymeric Solvent-Resistant Nanofiltration Membranes
作者：Xiquan Cheng, Yongling Zhang, Zhenxing Wang, Zhanhu Guo, Yongping Bai, Lu Shao
關鍵字：nanofilration, review
論文來源：期刊
發表時間：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.