SORPTION BEHAVIOR OF CO2 AND CH4 OF GLASSY POLYMERIC MEMBRANES AND ANALYTICAL DISCUSSION OF PARTIAL IMMOBILIZATION MODEL

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MAHDAVIAN MOHAMMAD; GHOREYSHI S.A.A.

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Journal: Iranian Journal of Polymer Science and Technology Year:2007 | Volume:20 | Issue:2 (ISSUE NO. 88) Page(s): 165-178

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Title

SORPTION BEHAVIOR OF CO2 AND CH4 OF GLASSY POLYMERIC MEMBRANES AND ANALYTICAL DISCUSSION OF PARTIAL IMMOBILIZATION MODEL

Author(s)

MAHDAVIAN MOHAMMAD | GHOREYSHI S.A.A. | Issue Writer Certificate

Keywords

GAS MEMBRANE SEPARATIONQ3

GLASSY POLYMERSQ3

HENRY-LONGMUIR DUAL SORPTION MODELQ3

PARTIAL IMMOBILIZATION MODELQ3

Abstract

Among various reported membrane-based gas separation processes, the best explanation is generally achieved by the solution-diffusion model. The main factors in this model are the solubility and diffusivity of permeation components through the membrane. The prediction of permeability and diffusivity in multicomponent gas permeation as well as the separation evaluation equilibrium and kinetic interactions requires a proper explanation of sorption and diffusive phenomena in the polymer matrix. Investigation made by various researchers in this area shows that the equilibrium interaction (sorption step) plays the key role in determining diffusion and permeation in multi component system. Therefore, the proper description of sorption behavior of gas mixture in the polymer is an essential task. The dual-mode sorption (Langmuir-Henry) is usually used for the description of equilibrium isotherm of gases in GLASSY POLYMERS based on this model; the diffusive behavior of the system is subsequently analyzed by the PARTIAL IMMOBILIZATION MODEL. In this study, the equilibrium sorption of CO2/CH4 mixture in various polymers was modelled using the experimental data available in the literature. The differences in the mechanism of adsorption for CO2 and CH4 were analyzed by considering variations in mode of sorption for each adsorbed component at different pressures. By introducing a new adsorption parameter, P50/50, (the pressure at which the portion of two modes in sorption are equal the contribution of each adsorbed component in occupying Longmuir sites was evaluated. The results indicate that the relative significance of sorption mode for each component is a function of pressure and it is different for various polymers.

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APA: Copy

MAHDAVIAN, MOHAMMAD, & GHOREYSHI, S.A.A.. (2007). SORPTION BEHAVIOR OF CO₂ AND CH₄ OF GLASSY POLYMERIC MEMBRANES AND ANALYTICAL DISCUSSION OF PARTIAL IMMOBILIZATION MODEL. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 20(2 (ISSUE NO. 88)), 165-178. SID. https://sid.ir/paper/6615/en

Vancouver: Copy

MAHDAVIAN MOHAMMAD, GHOREYSHI S.A.A.. SORPTION BEHAVIOR OF CO₂ AND CH₄ OF GLASSY POLYMERIC MEMBRANES AND ANALYTICAL DISCUSSION OF PARTIAL IMMOBILIZATION MODEL. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2007;20(2 (ISSUE NO. 88)):165-178. Available from: https://sid.ir/paper/6615/en

IEEE: Copy

MOHAMMAD MAHDAVIAN, and S.A.A. GHOREYSHI, “SORPTION BEHAVIOR OF CO₂ AND CH₄ OF GLASSY POLYMERIC MEMBRANES AND ANALYTICAL DISCUSSION OF PARTIAL IMMOBILIZATION MODEL,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 20, no. 2 (ISSUE NO. 88), pp. 165–178, 2007, [Online]. Available: https://sid.ir/paper/6615/en

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