Journal
MADERAS-CIENCIA Y TECNOLOGIA
Volume 17, Issue 4, Pages 759-772Publisher
UNIV BIO-BIO
DOI: 10.4067/S0718-221X2015005000066
Keywords
Adsorption; desorption; equilibrium moisture content; Laurus nobilis leaves; net isosteric heat; sorption isotherms; statistical analysis
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The moisture sorption isotherms of Algerian bay leaves (Laurus nobilis) were determined experimentally in this work. The equilibrium moisture contents of the leaves were measured at 40, 50, and 60 degrees C using static gravimetric method. Six mathematical models were tested to fit the experimental data of sorption isotherms and predict the hygroscopic behavior during storage or drying. Peleg model was found to be the best fitting model for describing the sorption curves. The net isosteric heat of sorption was computed from the equilibrium data at different temperatures by applying the integrated form of the Clausius-Clapeyron equation. The net isosteric heat of sorption is inversely proportional to the equilibrium moisture content and is found to be an exponential function of moisture content.
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