Modeling Binary and Multicomponent Systems Containing Supercritical CO₂ with Polyethylene Glycols and Compounds Relevant to the Biodiesel Production.

ABSTRACT: The CPA equation of state is applied to model binary, ternary, and multicomponent mixtures that contain CO₂ with polyethylene glycols or compounds relevant to biodiesel production, such as glycerol and various triglycerides. Effort has been made to evaluate the model performance on correlating both the liquid and the vapor phase compositions, which is a demanding task, revealing the model's and parameters' limitations, due to the rather low concentrations of heavy compounds in the vapor phase. Initially the model's binary parameters, which in all cases were temperature independent, were estimated using experimental data for binary systems. Those parameters were used to predict the phase behavior of supercritical CO₂ containing ternary and multicomponent mixtures. Sinc

SUBMITTER: Tsivintzelis I 

PROVIDER: S-EPMC9506037 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature