Journal article

Development of aqueous-based phase change amino acid solvents for energy-efficient CO2 capture: The role of antisolvent

MS Alivand, O Mazaheri, Y Wu, GW Stevens, CA Scholes, KA Mumford

Applied Energy | Elsevier Ltd | Published : 2019

Abstract

The energy penalty is a primary limitation for the implementation of the aqueous solvents for large-scale post-combustion CO2 capture processes. In this study, a novel aqueous-based phase change solvent, composed of potassium glycinate (GlyK, reactive species), water (H2O, solvent) and dimethylformamide (DMF, antisolvent) was developed to improve the energy efficiency of CO2 capture. To examine the role of the antisolvent, a series of aqueous-based amino acid solvents (GlyK-X) with different DMF:H2O (X) volume ratios was prepared, fully characterized and assessed. It was observed that a CO2-free phase appeared at the top of the aqueous-based amino acid GlyK-X solvents after CO2 absorption wh..

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Grants

Funding Acknowledgements

The authors would like to acknowledge the University of Melbourne for the Melbourne Research Scholarship, Particulate Fluids Processing Centre (PFPC) for infrastructural support and Peter Cook Centre for financial resources provided for this project.