Improving GC-PPC-SAFT equation of state for LLE of hydrocarbons and oxygenated compounds with water. - IFPEN - IFP Energies nouvelles Access content directly
Journal Articles Fluid Phase Equilibria Year : 2014

Improving GC-PPC-SAFT equation of state for LLE of hydrocarbons and oxygenated compounds with water.

Benoit Creton

Abstract

The GC-PPC-SAFT model has been shown to be useful for predicting the liquid-liquid phase split with water. In order to extend the use of this model to oxygenated compounds for a large number of families (aliphatic ethers, aldehydes, ketones, formates, acetates, propionates/butyrates, n-aliphatic acids), it is proposed to consider cross-association in addition to a binary interaction parameter lij on the combining rules for the cross-segment diameter between water and the investigated compound. The binary interaction parameters l ij, uαβuαβ, and wαβwαβ are fitted on mutual solubilities of water and organic compounds. The regressed values which are obtained for each chemical family, are subsequently used for predicting infinite dilution activity coefficient in water and n-octanol/water partition coefficient. In general, the results obtained are very much improved compared to the predictive approach discussed previously [Nguyen et al. Ind. Eng. Chem. Res. 52 (2013) 7014-7029]. The global deviation values on the decimal log scale for infinite dilution activity coefficient in water, water solubility and n-octanol/water partition coefficient are 0.377, 0.419, and 0.469, respectively.
Fichier principal
Vignette du fichier
Publication_of_lij_V2.pdf (512.35 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01030846 , version 1 (22-07-2014)

Identifiers

Cite

Tran-Binh Nguyen, Jean-Charles de Hemptinne, Benoit Creton, Georgios M. Kontogeorgis. Improving GC-PPC-SAFT equation of state for LLE of hydrocarbons and oxygenated compounds with water.. Fluid Phase Equilibria, 2014, 372 (June), pp.113-125. ⟨10.1016/j.fluid.2014.03.028⟩. ⟨hal-01030846⟩

Collections

IFP
118 View
533 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More