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Mixed Matrix Membranes
Open AccessArticle

Chemical Absorption of CO2 Enhanced by Nanoparticles Using a Membrane Contactor: Modeling and Simulation

Department of Chemical & Petroleum Engineering, UAE University, Al-Ain 15551, UAE
Membranes 2019, 9(11), 150; https://doi.org/10.3390/membranes9110150
Received: 6 October 2019 / Revised: 7 November 2019 / Accepted: 8 November 2019 / Published: 11 November 2019
(This article belongs to the Special Issue Membranes for Gas Separation)
In the present work, membrane resistance was estimated and analyzed, and the results showed that total membrane resistance increased sharply when membrane pores were wetted. For further study, a two-dimensional (2D) mathematical model was developed to predict the chemical absorption of CO2 in aqueous methyldiethanolamine (MDEA)-based carbon nanotubes (CNTs) in a hollow fiber membrane (HFM) contactor. The membrane was divided into wet and dry regions, and equations were developed and solved using finite element method in COSMOL. The results revealed that the existence of solid nanoparticles enhanced CO2 removal rate. The variables with more significant influence were liquid flow rate and concentration of nanoparticles. Furthermore, there was a good match between experimental and modeling results, with the modeling estimates almost coinciding with experimental data. Solvent enhanced by solid nanoparticles significantly improved the separation performance of the membrane contactor. There was around 20% increase in CO2 removal when 0.5 wt% CNT was added to 5 wt% aqueous MDEA. View Full-Text
Keywords: gas absorption; CO2 capture; nanofluid; MDEA; membrane wetting; carbon nanotubes (CNTs); global warming gas absorption; CO2 capture; nanofluid; MDEA; membrane wetting; carbon nanotubes (CNTs); global warming
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MDPI and ACS Style

Ghasem, N. Chemical Absorption of CO2 Enhanced by Nanoparticles Using a Membrane Contactor: Modeling and Simulation. Membranes 2019, 9, 150.

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