January 4, 2021

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Shooka Khoramfar Coauthored Mathematical Modeling of C02 Separation for International Journal of Greenhouse Gas Control

Shooka Khoramfar, Ph.D., (Texas) coauthored an article entitled “Mathematical modeling of CO2 separation using different diameter hollow fiber membranes” for publication in the International Journal of Greenhouse Gas Control on November 28, 2020.

Shooka’s coauthors were Jalil Ghobadi, Sterlitech Corporation; David Ramirez, M.M. Kabir, Texas A&M University; Robert Jerman, Markel Corporation; and Muhammad Saeed, University of Oslo.

Shooka Khoramfar is a Senior Staff Engineer based in Texas with a focus on volatile organic compounds (VOCs) emission control and wastewater treatment. Other research includes sustainable approaches for the control of hazardous air pollutants especially from petrochemical industries; efficient, innovative, and cost-effective methods for the treatment of water and wastewater; and environmental biotechnologies for air and water treatment.

The International Journal of Greenhouse Gas Control is a peer reviewed journal focusing primarily on carbon capture, transport, utilization & storage.. The Journal invites research covering applied science and engineering advances in control of greenhouse gas emissions and reductions of their atmospheric concentrations through carbon dioxide capture, transport and storage. The Journal publishes results of experimental and pilot studies, technology demonstrations, process design and optimization, and techno-economic, policy, and life-cycle analyses relevant to applications in the power sector, major resource, manufacturing and production industries, and negative emissions technologies. Original research, review and comment papers are included.


This research presents a 2D mass-transfer simulation model using computational fluid dynamics (CFD) for separation of CO2 from a binary gas mixture of CO2 /CH4 by means of polytetrafluoroethylene (PTFE) hollow fiber membrane contactor (HFMC). Governing equations with their corresponding boundary conditions are solved using COMSOL Multiphysics and the results are validated against reported experimental data. Convection and diffusion flux vectors and concentration gradient of CO2 species in the radial and axial directions of the HFMC are investigated. This study provides an opportunity to investigate the effects of gas and liquid cross flow velocities on the overall performance of membrane contacting system. The results demonstrate that increasing the liquid phase velocity improves the CO2 absorption performance of the membrane system, while increasing the gas mixture velocity deteriorates the CO2 separation of the system. The impact of hollow fiber geometry on the removal of CO2 is investigated and the results indicate that hollow fibers with smaller inner diameter provides higher effective mass-transfer area and therefore superior CO2 removal performance. Furthermore, the modeling predictions for the CO2 removal are in good agreement with the experimental data under various ratios of gas to liquid velocity. The PTFE hollow fiber membrane contacting system showed a great potential for separation of CO2 from gas mixtures.

More Information

About the article: https://authors.elsevier.com/c/1c96K6E2M2reLo
About publication: https://www.sciencedirect.com/journal/international-journal-of-greenhouse-gas-control
For consultation regarding modeling of CO2 separation, contact Shooka Khoramfar at This email address is being protected from spambots. You need JavaScript enabled to view it.
Learn more about Shooka: https://www.linkedin.com/in/shooka-khoramfar-khorramfar-ph-d-eit-51a77260/