CO2/CH4 mixed-gas separation in PIM-1 at high pressures: Bridging atomistic simulations with process modeling
dc.contributor.author | Balçık, Marcel | |
dc.contributor.author | Tantekin-Ersolmaz, S. Birgül | |
dc.contributor.author | Pinnau, Ingo | |
dc.contributor.author | Ahunbay, M. Göktuğ | |
dc.date.accessioned | 2021-09-13T06:28:26Z | |
dc.date.available | 2021-09-13T06:28:26Z | |
dc.date.issued | 2021-09-08 | |
dc.identifier.citation | Balçık, M., Tantekin-Ersolmaz, S. B., Pinnau, I., & Ahunbay, M. G. (2021). CO2/CH4 mixed-gas separation in PIM-1 at high pressures: Bridging atomistic simulations with process modeling. Journal of Membrane Science, 119838. doi:10.1016/j.memsci.2021.119838 | |
dc.identifier.issn | 0376-7388 | |
dc.identifier.doi | 10.1016/j.memsci.2021.119838 | |
dc.identifier.uri | http://hdl.handle.net/10754/671169 | |
dc.description.abstract | Polymeric membranes with intrinsic microporosity have been at the center of attention for gas separation applications since the introduction of PIM-1. This study utilizes atomistic simulations to model and to understand the pure- and mixed-gas transport properties of PIM-1 for the CO2/CH4 gas pair. Monte Carlo and molecular dynamics methods were combined in the estimation of sorption and diffusion of CO2 and CH4 in PIM-1. Simulated sorption and permeability data compared very well with experimental reports. Mixed-gas adsorption simulations proved the existence of competitive adsorption, favoring CO2, hence resulting in an increase in solubility selectivities. However, in mixed-gas environment CH4 permeabilities increased significantly compared to pure gas conditions, overall decreasing perm-selectivities of the polymer. Plasticization of the polymer around 25 bar CO2 partial fugacity was apparent both in pure- and mixed-gas conditions. Simulations at different gas feed compositions proved the dependence of competitive sorption and CO2-induced swelling in partial feed gas fugacities. Simulation results were combined to obtain a macroscopic permeability model that relates the multicomponent permeability to the permeate pressure and composition. Accurate estimations of permeabilities by the model were achieved allowing future implementation of the model in process simulation tools. | |
dc.description.sponsorship | This work was supported by the Scientific Projects Unit of Istanbul Technical University (Grant # MDK-2018-41400) and the Scientific and Technological Research Council of Turkey-TUBITAK (Grant #217M630). Computing resources used in this work were provided by the National Center for High Performance Computing of Turkey (UHeM) under grant # 1003032013. | |
dc.publisher | Elsevier BV | |
dc.relation.url | https://linkinghub.elsevier.com/retrieve/pii/S0376738821007821 | |
dc.rights | NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Membrane Science. 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 Journal of Membrane Science, [, , (2021-09)] DOI: 10.1016/j.memsci.2021.119838 . © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject | Gas separation | |
dc.subject | Co2 | |
dc.subject | Molecular simulation | |
dc.subject | Polymeric membrane | |
dc.subject | Plasticization | |
dc.title | CO2/CH4 mixed-gas separation in PIM-1 at high pressures: Bridging atomistic simulations with process modeling | |
dc.type | Article | |
dc.contributor.department | Chemical Engineering Program | |
dc.contributor.department | Advanced Membranes and Porous Materials Research Center | |
dc.contributor.department | Physical Science and Engineering (PSE) Division | |
dc.identifier.journal | Journal of Membrane Science | |
dc.rights.embargodate | 2023-09-01 | |
dc.eprint.version | Post-print | |
dc.contributor.institution | Istanbul Technical University, Department of Chemical Engineering, Maslak, Istanbul, 34469, Turkey | |
dc.identifier.pages | 119838 | |
kaust.person | Pinnau, Ingo | |
refterms.dateFOA | 2021-09-13T06:29:27Z | |
dc.date.published-online | 2021-09-08 | |
dc.date.published-print | 2021-12 |
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