Application of Biopolymers in Air Dehumidification Membranes

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yutaka Kawahara²  Alina Kudasheva¹  Akira Ito¹  Yuichiro Hirota¹ 

[1] Department of Chemical Engineering, Tokyo Institute of Technology;Division of Environmental Engineering Science, Gunma University

关键词: Air Dehumidification;    Silk Fibroin;    DNA-Na;    Triethylene Glycol;    Chitosan;   

DOI  :  10.1252/jcej.15we049

来源: Maruzen Company Ltd

【 摘 要 】

References(33)Novel biopolymer-based composite membranes have been prepared for the dehumidification of air. Biopolymers, such as silk fibroin, DNA-Na and chitosan, were used as the base membrane materials. To facilitate the moisture adsorption, a hygroscopic lithium chloride (LiCl) salt was incorporated into the biopolymers. The dehumidification efficiency of each material was evaluated in terms of the condensed-water recovery rate and water permeability. All of the biopolymer composite membranes showed a higher water recovery rate as compared to the triethylene glycol liquid membrane. The most efficient dehumidification performance was shown by the silk fibroin composite membrane with the moisture recovery rate of 11 g/h at 80%RH and mean water permeability of 1.84×10−11 kmol m m−2 s−1 kPa−1. This result was attributed to the high sorption of water into the silk fibroin (protein) and LiCl composite material.

【 授权许可】

Unknown