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Title Comparative analysis of the performance of mixing rules for density prediction of simple chemical mixtures
Authors Babalola, F.U.
Akanji, I.O.
Oyegoke, T.
ORCID
Keywords equation of state
mixing rule
density predictions
chemical mixtures
thermodynamics
models
Type Article
Date of Issue 2021
URI https://essuir.sumdu.edu.ua/handle/123456789/84566
Publisher Sumy State University
License Creative Commons Attribution - NonCommercial 4.0 International
Citation Babalola F. U., Akanji I. O., Oyegoke T. (2021). Comparative analysis of the performance of mixing rules for density prediction of simple chemical mixtures. Journal of Engineering Sciences, Vol. 8(1), pp. F25–F31, doi: 10.21272/jes.2021.8(1).f4
Abstract Four different mixing rules (MRs) in three equations of state (EOSs) have been used to account for the intermolecular forces of attraction between dissimilar molecules of different substances that form simple mixtures. The combined effects of the co-volumes of all constituent species of the mixtures were also considered, and the densities of these simple mixtures were predicted. Thereafter, the density results obtained were compared with accurately simulated experimental density values, and the effectiveness of these MRs was determined and compared. The four MRs compared are geometric mean average (GMA), whole square root average (SRA), Expanded geometric average (EGA), and simple average (SA) of attractive force parameter. They were all used in Van der Waals, Redlich Kwong, and Peng Robinson EOSs for two simple mixtures: a binary system (Ammonia – Water system) and a ternary mixture (methyl acetate – water – toluene system). It was found that GMA and EGA gave reasonably accurate estimates of the mixture attractive force parameter (am) and hence good density prediction for both Ammonia – Water and Methyl acetate – Water – Toluene systems. SRA gave unrealistic values of mixture densities for both systems and was discarded. SA gave a somewhat good result with Peng Robinson EOS for the ammonia-water system, but not that good in Redlich Kwong EOS and very poor in Van der Waals EOS. SA does not give reasonable estimates of the mixture densities with the three EOSs considered for the methyl acetate – water – toluene system.
Appears in Collections: Journal of Engineering Sciences / Журнал інженерних наук

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