Adsorption breakthrough and cycling stability of carbon dioxide separation from CO2/N2/H2O mixture under ambient conditions using 13X and Mg-MOF-74

Naef A.A. Qasem and Rached Ben-Mansour

Applied Energy, 2018, vol. 230, issue C, 1093-1107

Abstract: Carbon dioxide and storage is an efficient method to reduce the emitted CO2 from the burning of fossil fuels. Zeolite-based materials are conventional adsorbents used to adsorb some gasses involving carbon dioxide. Mg-MOF-74 is an eminent reticular material among adsorbents due to its good CO2 capacity at low pressures (10–20 kPa). In this study, an experimentally validated model is used to report the H2O effect on CO2 separation using 13X and Mg-MOF-74 under ambient conditions. A computational model has been developed using ANSYS Fluent program linked by user-define-function (written in C). The adsorption breakthrough results show that a humid CO2/N2 mixture, under 300 K, 86% RH, 101.3 kPa, could slightly reduce the CO2 adsorption capacity by about 0.05% and 6% for 13X and Mg-MOF-74, respectively (at CO2 adsorption breakthrough saturation). Regardless of these reductions, Mg-MOF-74 has better adsorption capacity, even under humid ambient conditions, by about 5.77 mmol/g in a comparison to 2.27 mmol/g for 13X, respectively.

Keywords: CO2 separation; Humidity; Mg-MOF-74; 13X; Cycling; Breakthrough (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (11)

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DOI: 10.1016/j.apenergy.2018.09.069

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