TY - JOUR
T1 - Sequestration of light hydrocarbons in Ionic Liquids at high-pressures
T2 - Consistency and thermodynamic modeling
AU - Arce, Pedro F.
AU - Igarashi, Edson M.
AU - Freire, Nian V.
AU - Vásquez, Dreidy M.
AU - ROBLES VASQUEZ, PEDRO ADRIAN
N1 - Funding Information:
P.F. Arce thanks the Fundação de Amparo a Pesquisa do Estado de Sao Paulo, FAPESP, and the Conselho Nacional de Desenvolvimento Científico e Tecnológico, CNPq, (Brazil) , for the financial support through Grants 2015/05155–8, 2018/03739–0, and 421065/2018–4 , E.M.S. Igarashi thanks the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, CAPES, (Brazil) for the Ph.D. grant 88882.379271/2019–01 , D.M. Vásquez thanks Pontificia Universidad Católica de Valparaíso (Chile) for the support provided and P.A. Robles thanks Pontificia Universidad Católica de Valparaíso (Chile) for grants Project DI CONSOLIDADO 039.456/20 .
Funding Information:
P.F. Arce thanks the Funda??o de Amparo a Pesquisa do Estado de Sao Paulo, FAPESP, and the Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico, CNPq, (Brazil), for the financial support through Grants 2015/05155?8, 2018/03739?0, and 421065/2018?4, E.M.S. Igarashi thanks the Coordena??o de Aperfei?oamento de Pessoal de Ni?vel Superior, CAPES, (Brazil) for the Ph.D. grant 88882.379271/2019?01, D.M. V?squez thanks Pontificia Universidad Cat?lica de Valpara?so (Chile) for the support provided and P.A. Robles thanks Pontificia Universidad Cat?lica de Valpara?so (Chile) for grants Project DI CONSOLIDADO 039.456/20.
Publisher Copyright:
© 2021
PY - 2021/10/15
Y1 - 2021/10/15
N2 - Ionic liquids are applicable in the recovery of valuable products, remotion of polluting agents, and used in many CO2-capture techniques. In this work, high-pressure vapor-liquid equilibria of twenty-one binary mixtures of light hydrocarbons + IL has been modelled with Peng-Robinson/Stryjek-Vera equation of state applying Wong-Sandler mixing rules and van Laar model for the gamma-phi approach and Perturbed Chain-Statistical Associating Fluid Theory equation of state for the phi-phi approach. Critical properties were determined using a group contribution method. Adjustable characteristic pure component parameters were obtained using predicted vapor pressures and saturated liquids densities values. Experimental data, obtained from literature, were subjected to thermodynamic consistency area test. For the thermodynamic modelling, adjustable parameters were fitted between predicted and experimental bubble pressure. Van Laar and interaction parameters were regarded as temperature-dependent. Results obtained for both models, in terms of the main deviations between experimental and calculated pressures, were reasonably satisfactory.
AB - Ionic liquids are applicable in the recovery of valuable products, remotion of polluting agents, and used in many CO2-capture techniques. In this work, high-pressure vapor-liquid equilibria of twenty-one binary mixtures of light hydrocarbons + IL has been modelled with Peng-Robinson/Stryjek-Vera equation of state applying Wong-Sandler mixing rules and van Laar model for the gamma-phi approach and Perturbed Chain-Statistical Associating Fluid Theory equation of state for the phi-phi approach. Critical properties were determined using a group contribution method. Adjustable characteristic pure component parameters were obtained using predicted vapor pressures and saturated liquids densities values. Experimental data, obtained from literature, were subjected to thermodynamic consistency area test. For the thermodynamic modelling, adjustable parameters were fitted between predicted and experimental bubble pressure. Van Laar and interaction parameters were regarded as temperature-dependent. Results obtained for both models, in terms of the main deviations between experimental and calculated pressures, were reasonably satisfactory.
KW - Consistency
KW - High pressure
KW - Ionic liquids
KW - Light hydrocarbons
KW - Sequestration
KW - Thermodynamic modeling
UR - http://www.scopus.com/inward/record.url?scp=85108811629&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2021.113119
DO - 10.1016/j.fluid.2021.113119
M3 - Article
AN - SCOPUS:85108811629
VL - 546
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
SN - 0378-3812
M1 - 113119
ER -