ABSTRACT

Experimental vapour liquid equilibrium data of several binary mixtures (methanol + glycerol), (ethanol + glycerol) and (glycerol + water) and ternary (methanol + glycerol + water), (ethanol + glycerol + water) and (water + glycerol + NaCl) were obtained over the pressure range of 6.7 kPa to 66.7 kPa through an Othmer-type ebulliometer, allowing the construction of temperature mass fraction and pressure temperature diagrams. It is shown that the systems without NaCl were satisfactorily represented by the UNIQUAC model with good agreement between theory and experimental results. It was observed that alcohol concentrations lower than 10 wt% increase the phase transition temperature. The systems investigated show positive deviations in relation to Raoult s law. Results presented in this work may be relevant in process design towards efficient recovering of components in the biodiesel down-stream processes.

Compounds

#	Formula	Name
1	CH4O	methanol
2	C2H6O	ethanol
3	C3H8O3	glycerol
4	H2O	water
5	ClNa	sodium chloride

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	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	10
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	10
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	5
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	3
POMD	3 1	Boiling temperature at pressure P, K ; Liquid	Mass fraction - 1; Liquid Pressure, kPa; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	125
POMD	3 2	Boiling temperature at pressure P, K ; Liquid	Mass fraction - 2; Liquid Pressure, kPa; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	125
POMD	3 4	Boiling temperature at pressure P, K ; Liquid	Mass fraction - 4; Liquid Pressure, kPa; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	17
POMD	3 1 4	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mass fraction - 1; Liquid Mass fraction - 3; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	18
POMD	3 2 4	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Mass fraction - 2; Liquid Mass fraction - 3; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	18
POMD	3 5 4	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid Solvent: Mass fraction - 4; Liquid Mass fraction - 5; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	125
POMD	3 5	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid	Mass fraction - 5; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	5
POMD	5 4	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid	Mass fraction - 5; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	10

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermophysical properties of biodiesel and related systems. Part I. Vapour liquid equilibrium at low pressures of binary and ternary systems involving methanol, ethanol, glycerol, water and NaCl

Veneral, J. G.[Josamaique G.], Benazzi, T.[Tassio], Mazutti, M. A.[Marcio A.], Voll, F. A. P.[Fernando A.P.], Cardozo-Filho, L.[Lucio], Corazza, M. L.[Marcos L.], Guirardello, R.[Reginaldo], Oliveira, J. V.[J Vladimir]

ABSTRACT