This article develops a modified version of the shrinking-core model accounting for the surface heterogeneity of solid particles. This model can be primarily used as a shortcut method for estimating the dependence of the kinetic rates on the concentration of fluid reactants and specifically the reaction order in the presence of a polydisperse solid mixture. This approach is tested numerically for model reactions involving polydisperse systems and is applied to the dissolution of MnO2 in sulphuric acid solutions containing glucose as the reductant agent. (C) 2002 Elsevier Science B.V. All rights reserved.
Two-layer shrinking-core model: parameter estimation for the reaction order in leaching processes / Antonio, Velardo; Giona, Massimiliano; Adrover, Alessandra; Pagnanelli, Francesca; Toro, Luigi. - In: CHEMICAL ENGINEERING JOURNAL. - ISSN 1385-8947. - 90:3(2002), pp. 231-240. [10.1016/s1385-8947(02)00038-4]
Two-layer shrinking-core model: parameter estimation for the reaction order in leaching processes
GIONA, Massimiliano;ADROVER, Alessandra;PAGNANELLI, Francesca;TORO, Luigi
2002
Abstract
This article develops a modified version of the shrinking-core model accounting for the surface heterogeneity of solid particles. This model can be primarily used as a shortcut method for estimating the dependence of the kinetic rates on the concentration of fluid reactants and specifically the reaction order in the presence of a polydisperse solid mixture. This approach is tested numerically for model reactions involving polydisperse systems and is applied to the dissolution of MnO2 in sulphuric acid solutions containing glucose as the reductant agent. (C) 2002 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
