Two solvents, 4-methyl-2-pentanone
(methyl isobutyl ketone, MIBK)
and 2-methyl-2-butanol (tert-pentanol, TAA), were tested and compared
according to their performance in furfural extraction from aqueous
solutions. Two new experimental apparatus were built and novel liquid–liquid
equilibrium of ternary systems consisting of solvent, furfural, and
water were measured between 298 and 401 K having boiling point pressure
up to 4 bar. In addition, liquid–liquid equilibrium of binary
systems were measured between 298 and 352 K at atmospheric pressure.
Measurements were modeled with UNIQUAC activity coefficient model
and its binary interaction parameters were presented together with
the measured data. The suitability of solvent for industrial use was
discussed with selectivity and distribution factors.
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