Material transfer

Overview

ABSTRACT

The matter transfer- chemical reaction coupling is at the core of processes implemented in liquid-liquid extraction, rightly called reactive extraction. This coupling is utilized in industrial applications, particularly in the nuclear industry. Indeed, the transfer of matter between two phases with a chemical reaction in one of the phases plays a major role in the gas-liquid absorption processes as well as in hydrometallurgy. As a rule, the contribution of the chemical reaction is reflected by an acceleration of the matter transfer with a direct action on the potential factor and in some cases also on the transfer coefficient.

Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.

Read the article

AUTHORS

Arnaud BUCH: Doctorate from the University of Paris VI - Senior Lecturer at École Centrale Paris ECP
Mohammed RAKIB: ECP Engineer - Doctor of Physical Sciences - Professor at École Centrale Paris
Moncef STAMBOULI: ECP Engineer - Doctor of Physical Sciences - Professor at École Centrale Paris

INTRODUCTION

Matter transfer between two phases, with chemical reaction in one of the phases, is a phenomenon that plays a considerable role in gas-liquid absorption operations (absorption of an acid gas by a basic solution and vice versa), as well as in hydrometallurgy (selective return of a metal species from the solvent to the aqueous phase by change of oxidation state in the presence of an appropriate oxidant or reductant).

When the transferred species is consumed by a chemical reaction, the rate of matter transfer is accelerated: the action on the potential factor is easy to understand. Analysis of the problem shows that, in some cases, the transfer coefficient is also affected.

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource. Click here to request your free trial access!

Already subscribed? Log in!

Ongoing reading
Material transfer

Equating the phenomenon