Modeling and kinetics study of solid-liquid extraction from leaves of nicotiana tabacum L.
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2015-01-01
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Abstract
Experimental kinetics has been obtained by extraction from leaves of Nicotiana tabacum L. at periodical conditions in a stirred vessel. The influence of the liquid-solid ratio and the kind of the solvent have been determined. A four parameters model for calculating the values of Deffhas been found using non-linear regression of the experimental results. The diffusion model have been solved using variable Deff. There is a very good coincidence between the numerical and experimental data.