Journal
CHEMICAL ENGINEERING RESEARCH & DESIGN
Volume 160, Issue -, Pages 437-446Publisher
ELSEVIER
DOI: 10.1016/j.cherd.2020.06.009
Keywords
Thin film composite membrane; Interfacial polymerization; Chiral separation; Cyclodextrin; Tryptophan
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Funding
- Natural Science Foundation of China [51703014]
- Natural Science Foundation of Jiangsu Province [BK20160495]
- Research Foundation for Advanced Talents of Jiangsu University [16JDG022]
- Changzhou University [ZMF17020034]
- Jiangsu Innovation & Entrepreneurship Doctoral Program
- Guangdong Provincial Science and Technology Project [2016A010105017, 2017B040404009]
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A facilitated-transport enantio-separation mechanism was proposed in this study and verified with an enantio-selective thin film composite membrane. The polysulfone membrane substrate was first fabricated at the optimized conditions, and the chiral selector alpha-CD was then incorporated into the selective layer by mixing with the MPD monomer for interfacial polymerization. Racemic tryptophan was employed as the model selectant, and inversed enantio-selectivities, 1.55 and 0.6 were observed from two different operation mode driven by concentration gradient and pressure gradient, respectively. The facilitated-transport separation mechanism was demonstrated by the concentration driven mode. The effects of other influencing factors including racemic feed concentration, alpha-CD concentration and pressure were also investigated. (C) 2020 Published by Elsevier B.V. on behalf of Institution of Chemical Engineers.
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