ABSTRACT

The liquid-liquid extraction process was simple and low cost with good energy consumption. Cyclopentanol, 2-methyl-2-butanol, and valeraldehyde as extractants were investigated. The initial concentration of isobutanol was 22 g/L. The extraction efficiency of isobutanol was greatly influenced by the quantities of extractants and temperature. Improving the concentration of extractants increased the recovery of isobutanol but reduced the dehydration ratio. Valeraldehyde was concluded to be the most suitable extractant. When valeraldehyde was used as extractant, 98.49 wt % of isobutanol from aqueous solution could be recovered at the aqueous solution-extractant mass ratio of 1:3 at 298.15 K. The highest dehydration ratio of valeraldehyde was 99.18%. The extraction process performed by valeraldehyde was exothermic. R (318.15 K) less than R (308.15 K) less than R (298.15 K) was obtained when valeraldehyde was employed.

Compounds

#	Formula	Name
1	C4H10O	2-methyl-1-propanol
2	C5H10O	cyclopentanol
3	C5H12O	2-methylbutan-2-ol
4	C5H10O	pentanal
5	H2O	water

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	5 1 2	Mass fraction - 1 ; Liquid mixture 1 Mass fraction - 5 ; Liquid mixture 2 Mass fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 2 Mass fraction - 5; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	15
POMD	5 1 4	Mass fraction - 5 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mass fraction - 1; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	15
POMD	5 1 3	Mass fraction - 1 ; Liquid mixture 2 Mass fraction - 5 ; Liquid mixture 1 Mass fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mass fraction - 5; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	15

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Liquid-Liquid Extraction of Biobased Isobutanol from an Aqueous Solution

Yi, C.[Conghua], Song, W.[Wenli], Zhang, Y.[Yulei], Qiu, X.[Xueqing]

ABSTRACT