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oai:tsukuba.repo.nii.ac.jp:00027209
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Analysis of transportmechanism of binaryorganicsolventsystem through a PDMS-based dense membrane using a regular solution model combined with a solution-diffusion model
中嶋, 光敏
Miyagi, Atsushi
Nabetani, Hiroshi
Nakajima, Mitsutoshi
© 2011 Elsevier B.V. NOTICE: this is the author’s version of a work that was accepted for publication in Separation and purification technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Separation and purification technology, VOL88, 2012, DOI:10.1016/j.seppur.2011.12.005
In the present study, transportmechanisms of various binarysystems such as alcohol–hexane, alkane–hexane, lipid–hexane, and diesel fuel–kerosene systems through a PDMS-based dense membrane were investigated using a combined regular solution (RS) and solution-diffusion (SD) model at constant pressure and temperature. The combined model contains many important factors for permeability such as diffusivity, degree of swelling membrane, membrane thickness, and osmotic pressure. Total, hexane, and solvent fluxes (except for a part of the solvent flux) of all systems were controlled by molar volumes of hexane and solvent and solubility parameters of hexane, solvent, and membrane polymer based on the combined model. The selectivity of the solvent in these systems seems to depend upon the similarity of the molecular structures of hexane and solvent, corresponding to entropy mixing, and the interaction of the hexane–solvent–membrane polymer, corresponding to enthalpy mixing. The combined model could well describe the transportmechanism of the binarysystem.
Elsevier B.V.
2012-03
eng
journal article
http://hdl.handle.net/2241/117026
https://tsukuba.repo.nii.ac.jp/records/27209
10.1016/j.seppur.2011.12.005
1383-5866
AA11136087
Separation and purification technology
88
216
226
https://tsukuba.repo.nii.ac.jp/record/27209/files/SPT_88.pdf
application/pdf
1.3 MB
2013-12-25