Carbon Dioxide Sequestration using Methane Hydrates

Date
2017-12
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Abstract

Climate change has been talked about a lot. Climate control is synonymous with an effort to reduce CO2 emissions or find ways to sequester it. One such method gaining mileage is CO2 sequestration into methane hydrates. Methane hydrates are crystalline solids. Hydrogen bonded water molecules form cavities that can store guest molecules like CO2, methane forming gas hydrates. Hydrates are formed under high pressure and low temperature conditions. Majorly methane hydrates are found in pore spaces of sediments along the continental margins and are prevalent within a hydrate stability zone (HSZ). In the CO2 injection method, not only does the CO2 get sequestered but the methane expelled can be used as a fuel. CO2 hydrates are thermodynamically more stable than methane proving advantageous for the CO2-CH4 exchange process. This study hopes to cover basic chemical and physical phenomena of hydrates through experiments and simulations and throw light on this incipient technology.

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Keywords
Hydrates, Hydrate stability zone, Sequestration
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