Relationship between mass transport and the quality of cured hide

Abstract

The advantages of mathematical simulations of the process of cured hide desalination are presented. Full three-dimensional model is presented and then its one-dimensional and a two-dimensional special cases are considered and compared. In the case of one-dimensional approximation, the solution can be obtained in an analytic form, while for the two-dimensional case only numerical solution is available. A possible occurrence of a concentration shock is modelled, and a method of its prevention is proposed to reduce losses in the hide substance. The predictions of the mathematical model are then compared with experimental data and found to be in good agreement.On présente les avantages des simulations mathématiques du procédé de dessalement de peau saumurée. Un modèle tridimensionnel complet est présenté, puis les cas spéciaux unidimensionnels et bidimensionnels sont considérés et comparés. Dans le cas d'une approximation unidimensionnelle, la solution peutêtre obtenue sous une forme analytique, alors que dans le cas bidimensionnel, seule une solution numérique est disponible. Une occurrence possible d'un choc de concentration est modélisée et une méthode de prévention est proposée afin de réduire les pertes de substance dans la peau. Les prédictions du modèle mathématique sont ensuite comparées aux données expérimentales et un bon accord aété trouvé.

Mathematical Modeling of the Drying Process of Chrome Shavings

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Mathematical simulation of calcimine deliming in the production of gelatin

“…The papers9–11 show the possibilities of a successful application of mathematical modeling in the tanning, leather manufacturing, and recycling processes. For example in,12 mathematical model based on the principle of a continuous reaction13 is used to solve the problem of a concentration shock, which occurs during desalination of cured hide and causes considerable damage of the collagen fine structure.…”