Abstract
An equation to model experimental data of kinematic viscosities of aqueous solutions commonly employed in osmotic dehydration is proposed in this article. The binary and ternary systems are constituted by water as solvent and by sugars (sucrose, glucose, and lactose) and glycerol with or without sodium chloride as solutes. Experimental data of kinematic viscosity of aqueous lactose solutions (with and without sodium chloride) are determined in this work. The range of concentration of all systems studied covers the typical experimental conditions of interest (from 0 to 5.0 mol kg−1 for sodium chloride and 0 up to 0.5 mol kg−1 for lactose) in this type of processes and temperature varied from 20 to 50°C. The parameters of the equation proposed for each system were optimized and the resulting expression adjusted experimental data with deviations less than 3.0%.
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ACKNOWLEDGMENTS
The authors acknowledge to the MCYT and the FEDER the partial support with the project (AGL2002–00255).