Journal
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
Volume 143, Issue 3, Pages -Publisher
ASME
DOI: 10.1115/1.4048304
Keywords
gas hydrate; carbon dioxide capture; fixed bed reactor; silica gel; kinetics; air emissions from fossil fuel combustion; combustion of waste; fuel combustion; hydrates
Categories
Funding
- National Chemical Laboratory, Pune, India
- Council of Scientific and Industrial Research (CSIR)
- Indian Institute of Technology, Roorkee, India
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The study examined the hydrate-based carbon dioxide capture process using various packed bed media to enhance the kinetics of hydrate formation with pure CO2. Silica gel with 100 nm pore size showed the best kinetic performance, achieving a water to hydrate conversion of 28 mol% in 3 hours. The results provide a solid foundation for further research in carbon dioxide capture and storage and gas hydrate fields.
The case for developing novel technologies for carbon dioxide (CO2) capture is fast gaining traction owing to increasing levels of anthropogenic CO2 being emitted into the atmosphere. Here, we have studied the hydrate-based carbon dioxide capture and separation process from a fundamental viewpoint by exploring the use of various packed bed media to enhance the kinetics of hydrate formation using pure CO2 as the hydrate former. We established the fixed bed reactor (FBR) configuration as a superior option over the commonly used stirred tank reactor (STR) setups typically used for hydrate formation studies by showing enhanced hydrate formation kinetics using the former. For the various packing material studied, we have observed silica gel with 100 nm pore size to return the best kinetic performance, corresponding to a water to hydrate conversion of 28 mol% for 3 h of hydrate growth. The fundamental results obtained in the present study set up a solid foundation for follow-up works with a more applied perspective and should be of interest to researchers working in the carbon dioxide capture and storage and gas hydrate fields alike.
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