Title: CFD analysis of CO₂ adsorption in different adsorbents including activated carbon, zeolite and Mg-MOF-74

Authors: Yasir Jamil; Mohamed A. Habib; Medhat A. Nemitallah

Addresses: Mechanical Engineering Department and KACST TIC on CCS, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia ' Mechanical Engineering Department and KACST TIC on CCS, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia ' Mechanical Engineering Department and KACST TIC on CCS, King Fahd University of Petroleum and Minerals, 31261 Dhahran, Saudi Arabia; Mechanical Engineering Department, Faculty of Engineering, Alexandria University, Egypt

Abstract: The present study focuses on modelling of a CO₂ adsorption system in different adsorbents including activated carbon, zeolite and metal organic frameworks (MOFs) as one of the most promising methods for post-combustion carbon capture. Heat and mass transfer features of the numerical model are validated against the available experimental in the literature. The adsorption characteristics of CO₂ in activated carbon are studied in detail under fixed pressure of 2 bar. This is followed by comparisons between different adsorbents including activated carbon, zeolite and MOFs. The effects of storage pressure on adsorption are studied for different adsorbents for a range of pressure from 20 kPa to 100 kPa. For all adsorbents, the results showed high adsorption at the entrance and near wall regions. The adsorption capacity of all adsorbents has been increased by increasing the storage pressure. Mg-MOF-74 adsorption material resulted in the highest adsorption capacity as compared to other materials.

Keywords: post-combustion carbon capture; CO₂ adsorption; activated carbon; zeolite; metal organic frameworks; MOFs.

DOI: 10.1504/IJGW.2017.085785

International Journal of Global Warming, 2017 Vol.13 No.1, pp.57 - 80

Received: 21 Jan 2015
Accepted: 02 Sep 2015
Published online: 14 Aug 2017 *

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