Development of Integrated Carbon Dioxide Capture and Conversion for Sustainable Chemical Production

Shaker Shiran, Hadi

Development of Integrated Carbon Dioxide Capture and Conversion for Sustainable Chemical Production

dc.contributor.advisor	Kibria, Md Golam
dc.contributor.author	Shaker Shiran, Hadi
dc.contributor.committeemember	Hu, Jinguang
dc.contributor.committeemember	Sumon, Kazi Z.
dc.date.accessioned	2023-04-14T21:12:33Z
dc.date.available	2023-04-14T21:12:33Z
dc.date.issued	2023-03-30
dc.description.abstract	The electrochemical CO2 reduction reaction (eCO2RR) is a scalable, flexible, compact, and energy-efficient route to convert CO2 into value-added products. However, the viability of eCO2RR relies on reducing energy demands and production costs to compete with established alternatives. Integration of CO2 capture and conversion, where the capture system is unified with eCO2RR, has the potential to eliminate energy-intensive steps of CO2 capture and regeneration, leading to improved process economics. The first part of this study conducted a comprehensive review of available literature to identify the potential sources of CO2 and the relevant capture technologies. The second part focuses on using ambient air to capture CO2 using direct air capture (DAC) technology using alkali-hydroxide-based solvent to produce carbonate and converting carbonate into an electrochemical system. The concept of carbonate electrolysis was explored as a method for regenerating the capture solvent while converting CO2 to carbon monoxide (CO). It was found that the electrochemical cell could serve as both a solvent regeneration and CO2 conversion step. Our modeling study showed a trade-off between the regeneration and CO2 conversion step. However, the techno-economic analysis (TEA) showed that with technological advancements, the production cost of CO could drop below 200 $/ton CO compared to the current production cost over 1500 $/ton CO. The third chapter focused the on direct electrolysis of CO2 from a dilute stream to simulate industrial flue gasses. A permselective gas diffusion electrode (PGDE) consisting of a metal-organic framework-based permselective layer and a silver-based gas diffusion electrode (GDE) was designed. The PGDE enables in-situ CO2 capture and electrochemical conversion. A comparative study of various PGDEs was performed to find the optimum conditions. With 10% CO2 purity in the feedstock, the CALF-20/PSF-based PGDE delivered a 5-fold increased maximum partial current density compared to the unmodified GDE. In addition, it was able to perform continuously for more than 20 hours and retained around 70% FE for CO. In conclusion, this thesis provides an understanding of the efficiency trade-off between CO2 capture and conversion and identifies pathways for optimizing efficiency. The integration of CO2 capture and conversion reduces the need for energy-intensive steps and has the potential to lower the production costs of CO2 derived chemical feedstocks.
dc.identifier.citation	Shaker Shiran, H. (2023). Development of integrated carbon dioxide capture and conversion for sustainable chemical production (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.uri	https://prism.ucalgary.ca/handle/1880/116070
dc.identifier.uri	https://dx.doi.org/10.11575/PRISM/dspace/40916
dc.language.iso	en
dc.publisher.faculty	Schulich School of Engineering
dc.publisher.institution	University of Calgary
dc.rights	University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject	Carbon dioxide
dc.subject	CO2 reduction
dc.subject	CO2 conversion
dc.subject	Renewable chemicals and fuels
dc.subject	Carbon capture and conversion
dc.subject	CO2 capture
dc.subject	Electrochemical CO2 conversion
dc.subject	Electrochemical CO2 reduction
dc.subject	Direct air capture
dc.subject	DAC
dc.subject.classification	Engineering--Chemical
dc.title	Development of Integrated Carbon Dioxide Capture and Conversion for Sustainable Chemical Production
dc.type	master thesis
thesis.degree.discipline	Engineering – Chemical & Petroleum
thesis.degree.grantor	University of Calgary
thesis.degree.name	Master of Science (MSc)
ucalgary.thesis.accesssetbystudent	I require a thesis withhold – I need to delay the release of my thesis due to a patent application, and other reasons outlined in the link above. I have/will need to submit a thesis withhold application.