Liquid – liquid equilibria in binary and ternary systems of phenol + hydrocarbons (n–dodecane or n–hexadecane) and water + phenol + hydrocarbons (n–dodecane or n–hexadecane) at temperatures between 298K and 353K

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-05
Major/Subject
Mcode
Degree programme
Language
en
Pages
19
Series
Fluid Phase Equilibria, Volume 556
Abstract
This study reports liquid–liquid equilibrium (LLE) and liquid–liquid–liquid equilibrium (LLLE) data for binary (phenol + n-dodecane, or n-hexadecane) and ternary (water + phenol + n-dodecane, or n-hexadecane) systems measured under atmospheric pressure. The compositions of coexisting phases were determined with analytical and cloud point methods at temperatures 298 K – 353 K. The Non–Random Two–Liquid (NRTL) excess Gibbs energy model was employed to correlate the measured systems. The binary interaction parameters were regressed using analytical LLE and cloud point data. In addition, the parameters were also calculated using the binary LLE data combined with the isothermal vapor–liquid data from the literature applying the NRTL–RK (Redlich–Kwong) property method. The average absolute deviations in liquid mole fraction obtained with the NRTL model (using six adjusted parameters) for the LLE and VLE experimental data were 0.006 and 0.014 respectively. The phase equilibria of binary phenol + hydrocarbon (n-dodecane or n-hexadecane) systems were modeled at the temperature range of 313 K – 573 K.
Description
Funding Information: Roshi Dahal acknowledges Fortum and Neste Foundation for the financial support. Many thanks to Dr. Pia Lappalainen for reading and providing suggestions for language improvements. Publisher Copyright: © 2022
Keywords
Cloud point, Decanter model, Spline fit, Three liquid phases, Two liquid phases
Other note
Citation
Dahal , R , Uusi-Kyyny , P , Pokki , J-P & Alopaeus , V 2022 , ' Liquid – liquid equilibria in binary and ternary systems of phenol + hydrocarbons (n–dodecane or n–hexadecane) and water + phenol + hydrocarbons (n–dodecane or n–hexadecane) at temperatures between 298K and 353K ' , Fluid Phase Equilibria , vol. 556 , 113402 . https://doi.org/10.1016/j.fluid.2022.113402