Lois cinetiques dans les reactions exothermiques de formation des hydrures metalliques : influence des parametres de surface et des elements d'addition

SIGLECNRS T 59353 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

Sorption isotherms and isosteric heats of sorption of mint variety (

Knowledge of sorption isotherms of agricultural products is necessary to control rehydration/dehydration and storage processes. The aim of this work is to determine moisture adsorption and desorption isotherms of Moroccan mint leaves and stems (Mentha viridis). The sorption isotherms of the plants was determined within the range of 0.0549–0.964 relative air humidity at three different temperatures (40, 50 and 60 ∘C) using saturated salt solutions method. Guggenheim, Anderson and Boer (GAB) model was used to describe the experimental data. The isosteric heats of desorption and adsorption were determined. Then, the isosteric heat of desorption was compared to the isosteric heat of adsorption and both decreased continuously with increasing the equilibrium moisture content. Finally, the comparison between the sorption net isosteric of mint leaves and stems was studied