MODELING OPEN AIR AND SHADE DRYING OF CORYMBIA CITRIODORA LEAVES FOR THE ESSENTIAL OIL PRODUCTION

Hubert Makomo; Jean Bruno Bassiloua; Fergie Romance Bivoumboukoulou; Thomas Silou

doi:10.29121/granthaalayah.v9.i11.2021.4322

Authors

Hubert Makomo Phd Program, Faculty Of Sciences And Techniques BP 69 University Marien Ngouabi, Brazzaville-Congo https://orcid.org/0000-0001-9557-3925
Jean Bruno Bassiloua Phd Program, Faculty Of Sciences And Techniques BP 69 University Marien Ngouabi, Brazzaville-Congo, Higher School of Technology « Les Cataractes » (EPrES) BP 389 Brazzaville-Congo
Fergie Romance Bivoumboukoulou T2A, PhD program, Faculty of Sciences and Techniques, B.P.: 69 University Marien Ngouabi, Brazzaville-Congo
Thomas Silou Phd Program, Faculty of Sciences and Techniques BP 69 University Marien Ngouabi, Brazzaville-Congo, Higher School of Technology « Les Cataractes » (EPrES) BP 389 Brazzaville-Congo

DOI:

https://doi.org/10.29121/granthaalayah.v9.i11.2021.4322

Keywords:

Shade Drying, Kinetics, Corymbia Citriodora, Congo-Brazzaville

Abstract [English]

In the literature, the drying mechanism were generally analyzed in terms of effective diffusivity through the pseudo first order diffusion model. This process was revisited through the modified Peleg model, assuming the drying as a moisture desorption versus drying time. The leaves of Corymbia citriodora acclimatized in the Congo Brazzaville “Plateau des Cataractes” were dried in open air and under shade thanks to a domestic scale of essential oil production. One obtains following model parameters: kinetic constant k₁: 0.8555 - 2.1355 d.(g/g)^-1, extraction capacity constant K₂: 1.5255 - 1.8733 (g/g)^-1; end equilibrium moisture X_∞ = 0.53 - 0.66 g/g. and first order drying kinetic constant k = K₂/k₁: 1.71 - 1.78 d^-1. Pseudo first order diffusion model fits experimental data with k = 0.368 - 0.587 d^-1 and t_1/2 = 1,18 - 1,88 d.. These results needed for the optimization of proccess and sizing equipments came from a fast graphic data processing, with low computer inputs.

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