Assessment of bio-ionic liquids as promising solvents in industrial separation processes: Computational screening using COSMO-RS method
EntityUAM. Departamento de Ingeniería Química
10.1016/j.fluid.2022.113495Fluid Phase Equilibria 560 (2022): 113495
Funded byThe authors are grateful to Comunidad de Madrid (project SUSTEC P2018/EMT-4348) and Ministerio de Economía y Competitividad of Spain (project CTQ2017-89441-R) for its financial support and Centro de Computación Científica de la Universidad Autónoma de Madrid (CCC) for its computational resources. Rubén Santiago thanks Ministerio Universidades for his Margarita Salas contract (CA1/RSUE/2021-00585)
ProjectComunidad de Madrid. P2018/EMT4348/SUSTEC-CM; Gobierno de España. CTQ2017-89441-R
SubjectsGas Liquid Absorption; Hydrocarbon Separation; Acetone; Ammonia; Química
Rights© 2022 The Author(s)
Esta obra está bajo una Licencia Creative Commons Atribución 4.0 Internacional.
The use of organic solvents in the chemical industry for gas-liquid absorption or liquid-liquid extraction operations is still unavoidable. The search of “greener” solvents to replace fossil-based counterparts is a challenge for the scientific community. Biocompatible ionic liquids (bio-ILs) emerged as a sustainable approach for the development of greener processes. In this work, bio-ILs based on choline as common cation are evaluated as promising solvents in typical industrial separation processes such as gas absorption (refrigerants, CO2, H2S, NH3, or acetone) and liquid-liquid extraction (hydrocarbon separations, denitrogenation, desulfurization, and recovery of value-added compounds and/or contaminants from aqueous streams) by means of COSMO-RS method. Some bio-ILs show competitive behavior compared to the benchmark common ILs solvents for all the solutes evaluated. None of the solvents evaluated is predicted to form two liquid phases in aqueous solutions, so future work should be conducted on finding hydrophobic bio-ILs to perform these separations. On the other hand, bio-ILs in hydrocarbon separations by means of liquid-liquid extraction show competitive results in terms of selectivities (benzoate-based) and partition coefficients (bicarbonate-based) compared to benchmark sulfolane and common ILs previously tested
Google Scholar:Santiago Lorenzo, Rubén - Díaz, I. - González-Miquel, María - Navarro Tejedor, Pablo - Palomar Herrero, José Francisco
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