Abstract
Biodiesel produced by transesterification of the oil with methanol yields about 8–11% glycerol as a by-product. A cost-efficient and eco-friendly method has been researched to convert the by-product glycerol into a deep eutectic solvent (DES). This DES has been used to study the absorption of CO2 via carbamate formation upon the reaction between their hydrogen bonding donor units and CO2. DES is made of crude glycerol—choline chloride exhibits a low CO2 uptake of 0.377 wt% with initial kinetics (0.123 wt% up takes within 20 min). The given DES also shows sustainable activity in the presence of water and decent activity against temperature rise. The observed capture of CO2 using DES suggests that crude glycerol as candidates to replace hydrogen-bond donor (HBD) in the conventional DES system. Crude glycerol-based DES CO2 absorption technology is worth to explore further.
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Acknowledgements
The authors are grateful to the Ministry of Human Resource and Development, Government of India, for funding support (5-5/2014-TS.VII September, 4, 2014) through the establishment of the Center of Excellence for Energy Research at Sathyabama Institute of Science and Technology. Author thanks Physics Department (funded by DST-FIST), Sathyabama Institute of Science and Technology for carrying out FT-IR and TGA test.
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Alok, R., Dawn, S.S., Priscilla, N., Priyanka, R., Joshua, A. (2020). CO2 Capture Using Crude Glycerol-Derived Deep Eutectic Solvents. In: Singh, S., Ramadesigan, V. (eds) Advances in Energy Research, Vol. 2. Springer Proceedings in Energy. Springer, Singapore. https://doi.org/10.1007/978-981-15-2662-6_66
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