NDLI: CO$_{2}$, N$_{2}$ gas sorption and permeation behavior of chitosan membrane

Content Provider	Springer Nature Link
Author	Bae, Seong Youl Lee, Kyoo Hun Yi, Sung Chul Kim, Hee Taik Kim, Yu Hwan Kumazawa, Hidehiro
Copyright Year	1998
Abstract	The sorption equilibria for CO$_{2}$ and N$_{2}$ in dry chitosan membrane at 20 and 30 ‡C were measured by a pressure decay method. The steady-state permeation rates for CO$_{2}$ and N$_{2}$ in dry and wet (swollen with water vapor) chitosan membranes at 20 and 30 ‡C were measured by a variable volume method. The sorption equilibrium for N$_{2}$ obeyed Henry’s law, whereas that for CO$_{2}$ was described apparently by a dual-mode sorption model. This non-linear sorption equilibrium for CO$_{2}$ could be interpreted by the interaction of sorbed CO$_{2}$ with the chitosan matrix expressed as a reversible reaction. The logarithm of the mean permeability coefficient for CO$_{2}$ in dry chitosan membrane increased linearly with upstream gas pressure. A linear increase of the logarithmic mean permeability coefficient for CO$_{2}$ with the pressure could be interpreted in terms of a modified free-volume model. The mean per-meability coefficient for N$_{2}$ in dry chitosan membrane only slightly increased with upstream gas pressure. The per-meabilities for CO$_{2}$ and N$_{2}$ in wet chitosan membrane increased by 15 to 17 times and 11 to 15 times, respectively, as compared to those in the dry membrane.
Starting Page	223
Ending Page	226
Page Count	4
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	15
Issue Number	2
e-ISSN	19757220
Language	English
Publisher	Springer-Verlag
Publisher Date	1998-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Sorption Permeation Chitosan Membrane CO$_{2}$ N$_{2}$ Industrial Chemistry/Chemical Engineering Catalysis Materials Science Biotechnology
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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