Spectroscopic Identification on CO 2 Separation from CH 4 + CO 2 Gas Mixtures Using Hydroquinone Clathrate Formation

Ji-Ho Yoon, Dongwon Lee and Jong-Won Lee
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Ji-Ho Yoon: Department of Energy and Resources Engineering, Korea Maritime and Ocean University, Busan 49112, Korea
Dongwon Lee: Department of Environmental Engineering, Kongju National University, 1223-24 Cheonan-daero, Cheonan-si 31080, Korea
Jong-Won Lee: Department of Environmental Engineering, Kongju National University, 1223-24 Cheonan-daero, Cheonan-si 31080, Korea

Energies, 2021, vol. 14, issue 14, 1-9

Abstract: The formation of hydroquinone (HQ) clathrate and the guest behaviors of binary (CH 4 + CO 2 ) gas mixtures were investigated by focusing on an application to separate CO 2 from landfill gases. Spectroscopic measurements show that at two experimental pressures of 20 and 40 bar, CO 2 molecules are preferentially captured in HQ clathrates regardless of the gas composition. In addition, preferential occupation by CO 2 is observed more significantly when the formation pressure and the CH 4 concentration are lower. Because the preferential occupation of CO 2 is found with binary (CH 4 + CO 2 ) gas mixtures regardless of the composition of the feed gas, a clathrate-based process can be applied to CO 2 separation or concentration from landfill gases or (CH 4 + CO 2 ) mixed gases.

Keywords: clthrate; hydroquinone; carbon dioxide; methane; landfill gas (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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