Skip to Main content Skip to Navigation
Journal articles

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

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.
Document type :
Journal articles
Complete list of metadata

Cited literature [98 references]  Display  Hide  Download
Contributor : Françoise Bertrand Connect in order to contact the contributor
Submitted on : Tuesday, July 22, 2014 - 3:28:24 PM
Last modification on : Friday, August 5, 2022 - 12:36:03 PM
Long-term archiving on: : Tuesday, November 25, 2014 - 11:16:31 AM


Files produced by the author(s)





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, Elsevier, 2014, 372 (June), pp.113-125. ⟨10.1016/j.fluid.2014.03.028⟩. ⟨hal-01030846⟩



Record views


Files downloads