loading page

Second Interfacial Polymerization of Thin-film Composite Hollow Fibers with Amine-CDs for Pervaporation Dehydration
  • +6
  • Xi Yu,
  • Tengyang Zhu,
  • Sheng Xu,
  • Xuan Zhang,
  • Ming Yi,
  • Shu Xiong,
  • Shutong Liu,
  • Liang Shen,
  • Yan Wang
Xi Yu
Huazhong University of Science and Technology

Corresponding Author:[email protected]

Author Profile
Tengyang Zhu
Huazhong University of Science and Technology
Author Profile
Sheng Xu
Huazhong University of Science and Technology
Author Profile
Xuan Zhang
Huazhong University of Science and Technology
Author Profile
Ming Yi
Huazhong University of Science and Technology
Author Profile
Shu Xiong
Huazhong University of Science and Technology - Wuchang Campus
Author Profile
Shutong Liu
Huazhong University of Science and Technology
Author Profile
Liang Shen
Huazhong University of Science and Technology
Author Profile
Yan Wang
Huazhong University of Science and Technology
Author Profile

Abstract

High performance thin-film composite (TFC) hollow fiber membranes have been developed for pervaporation dehydration by second interfacial polymerization (SIP) modification with 3 kinds of amine-functionalized β-cyclodextrin (amine-CDs), which were synthesized by modifying β-CD with ammonia, ethylenediamine (EDA) and tris(2-aminoethyl)amine, respectively. The chemical properties of amine-CDs and SIP-modified TFC membranes were characterized by various techniques. The effects of amine-CD type and SIP parameters (pH or concentration of CD-EDA solution) were studied systematically to acquire the optimized selective layer of TFC membranes for ethanol dehydration. Among all SIP-modified TFC membranes, the one with SIP by 2 wt% CD-EDA aqueous solution (pH=2) exhibited the most outstanding separation performance with a ultra-high permeation flux (3018.0±12.0 g/m2.h) and permeate concentration (98.7±0.2 wt% water) at 50 °C (equivalent to separation factor of 415), contributed by the effectively incorporated CD with rich hydrophilic functional groups and intrinsic nanocavities facilitating the passage of water molecules.
10 Aug 2020Submitted to AIChE Journal
28 Aug 2020Assigned to Editor
28 Aug 2020Submission Checks Completed
30 Aug 2020Reviewer(s) Assigned
17 Dec 2020Editorial Decision: Accept