ABSTRACT

In the present work, a group contribution model is proposed for estimating the dynamic viscosity of fatty compounds. For the major components involved in the vegetable oil industry (such as fatty acids, esters and alcohols, triacylglycerols, and partial acylglycerols), the optimized parameters are reported. In order to improve the data bank gathered from the literature, viscosity data were measured as a function of temperature for three saturated and three unsaturated fatty esters, one unsaturated fatty acid, and one unsaturated triacylglycerol. These last two are unavailable data in the literature (linolenic acid and trilinolenin). A simple method of calculation is also proposed to predict the dynamic viscosity of vegetable oils as an extended applicability of our equation. The model can be a valuable tool for designing processes and equipment for the oil industry, including edible and non-edible compounds, such as biodiesel.

Compounds

#	Formula	Name
1	C13H26O2	methyl dodecanoate
2	C15H30O2	methyl tetradecanoate
3	C17H34O2	methyl hexadecanoate
4	C19H36O2	methyl cis-9-octadecenoate
5	C19H34O2	methyl (Z,Z)-9,12-octadecadienate
6	C18H30O2	all-cis-9,12,15-octadecatrienoic acid
7	C57H92O6	trilinolenin
8	C19H32O2	methyl (Z,Z,Z)-9,12,15-octadecatrienoate

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	1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	4
POMD	4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6
POMD	5	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6
POMD	6	Kinematic viscosity, m2/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6
POMD	7	Kinematic viscosity, m2/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6
POMD	8	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	6

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

Group Contribution Model for Predicting Viscosity of Fatty Compounds

Ceriani, R.[Roberta], Goncalves, C. B.[Cintia B.], Rabelo, J.[Juliana], Caruso, M.[Marcel], Cunha, A. C. C.[Ana C. C.], Cavaleri, F. W.[Flavio W.], Batista, E. A. C.[Eduardo A. C.], Meirelles, A. J. A.[Antonio J. A.]

ABSTRACT