In this work, the PC-SAFT equation of state (EoS) has been used to model the solubility of acid gases (CO2 and H2S) in two imidazolium-based ionic liquids (ILs) ([C8-mim][PF6] and [C8-mim][Tf2N]). Parameters of pure ILs were estimated using experimental densities. Two strategies were considered to model densities of pure ILs. In strategy 1, ILs were modeled as nonassociating compounds and in st...

The perturbed chain-statistical associating fluid theory (PC-SAFT) equation of state (EoS) is applied, and its performance assessed using a reliable free-to-access benchmark thermodynamic database developed by the authors. A total 200 non-electrolytic binary systems are included in database, which divided into nine groups according to character components, that is, their ability be involved hyd...

Small changes in temperature or pressure can lead to crude oil phase separation and multiple orders of magnitude change viscosity. The one-parameter friction theory framework using the SARA-based method with perturbed-chain statistical association fluid (PC-SAFT) EoS has proven have high accuracy viscosity predictions light oil. However, it failed for heavy In this work, above model is modified...

A mathematical model for polymerization kinetics and molar mass development in the nitroxide-mediated (NMP) of vinyl monomers supercritical carbon dioxide (scCO2) has been developed. The method moments is used development. perturbed-chain statistical associating fluid theory (PC-SAFT) equation state to estimate number stable phases present at equilibrium reaction mixture, critical average chain...

We propose a density-functional theory (DFT) describing inhomogeneous polymer-carbon dioxide mixtures based on a perturbed-chain statistical associating fluid theory equation of state (PC-SAFT EOS). The weight density functions from fundamental measure theory are used to extend the bulk excess Helmholtz free energy to the inhomogeneous case. The additional long-range dispersion contributions ar...

The minimum miscibility pressure (MMP) is one of the crucial and substantial parameters in the gas injection projects for enhanced oil recovery (EOR). This parameter indicates the minimum pressure at constant temperature and composition conditions for reaching 100 percent of the oil production recovery which leads to a huge economic income. Therefore, an inaccurate prediction of the MMP may lea...