The Isothermal Sorption – Experimental and mathematical investigations of Orange Peel (Citrus sinensis)
DOI:
https://doi.org/10.64252/v5mt9r79Keywords:
Sorption isotherm, static gravimetric method, models, orange peel (Citrus Sinensis), equilibrium water content, isosteric heat of sorptionAbstract
During a forced convection drying and storage operation, the equilibrium water content of a product to be dried is critical. These figures are frequently derived using isothermal sorption curves. The calculation of isotherms is a necessary step in determining the distribution and intensity of water connections in products. Moisture equilibrium data for adsorption and desorption of water from orange peel (Citrus sinensis) were investigated at tree temperatures 30-40-50 C° and water activity ranging from 0.05 to 0.9 to study the influence of the temperature on the equilibrium curves of the orange peel. Nine models, namely the GAB, BET, Adam and Shove & Henderson Thompson, Caurrie, Oswin Smith Hailwood Horrobon Langmuir equations were fitted to the sorption data. The hysteresis effect was observed. The net isosteric heats for orange peel were determined by the application of the Clausius-Clapeyron equation to sorption isotherm obtaining from the best fitting equation.
