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Extraction of phenols: Ii. distribution data for binary and multicomponent mixtures of phenols, countercurrent extraction performance and model validation
Author(s) -
Bízek V.,
Hor áč J.,
Koušová M.,
Komers R.,
Proch ázka J.,
Heyberger A.
Publication year - 1993
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450710212
Subject(s) - chemistry , aqueous solution , extraction (chemistry) , methyl isobutyl ketone , phenol , phenols , chromatography , countercurrent exchange , phenol extraction , toluene , cresol , solvent , liquid–liquid extraction , coal tar , organic chemistry , thermodynamics , coal , rna , biochemistry , physics , gene
The distribution of binary mixtures of phenol with o‐, m‐ or p‐ cresol between aqueous solutions of NaOH and toluene or methyl‐isobutyl‐ketone (MIBK) was investigated. A mathematical model of the distribution was formulated and its parameters were evaluated for each phenol/cresol/solvent combination. The extraction of phenolics from a coal tar fraction with aqueous solutions of sodium phenates was carried out in a countercurrent cascade of four equilibrium stages. The back extraction of phenolics from the aqueous extract was carried out as a triple extraction with pure solvent. A mathematical simulation of the multicomponent, multistage experiments was realized with the DOOM algorithm using an extension of the equilibrium model, formulated for binary mixtures.