Gas adsorption equilibria, kinetics, and process performance of zeolitic adsorbents for carbon capture applications
Author(s)
Azzan, Hassan
Type
Thesis
Abstract
Engineered carbon capture and sequestration is set to play a major role in reducing global carbon dioxide (CO2) emissions to combat the harmful effects of climate change. Hydrogen production using fossil fuels, mainly from steam methane reforming (SMR), is a key contributor to industrial CO2 emissions, and adsorption-based CO2 capture carries great promise in reducing these emissions. This project focuses on the development and application of an experimental-computational workflow to characterize adsorbent materials and processes for pre- and post-combustion CO2 capture applied on an SMR plant. The workflow includes experimental techniques for characterizing the textural properties, adsorption equilibrium, and adsorption kinetics of zeolitic adsorbents. To complement this experimental effort, novel computational tools were developed that have been used to optimize cycle-based carbon capture processes. The workflow was deployed on four zeolitic materials, namely ZIF-8, and Zeolites H-Y, Na-Y, and NaTMA-Y, along with two benchmark materials for CO2 capture, activated carbon and zeolite 13X. The workflow allows for rapid assessment of adsorbent materials from milligram to process scales, and the findings from the feasibility appraisal can feed back to earlier stages of adsorbent development in order to optimize material properties at the point of formulation.
Version
Open Access
Date Issued
2024-04-10
Date Awarded
01/06/2024
License URL
Advisor
Pini, Ronny
Petit, Camille
Publisher Department
Chemical Engineering
Publisher Institution
Imperial College London
Qualification Level
Doctoral
Qualification Name
Doctor of Philosophy (PhD)