J. Phys. IV France 113 (2004) 119
DOI: 10.1051/jp4:20040026

Évaporation isotherme et isobare des saumures du sud tunisien suivie par la méthode DPAO

H. Hammi¹, J.A. Musso², A. M'Nif¹ and R. Rokbani<sup>1

1</sup>  Laboratoire des Procédés Chimiques, Institut National de Recherche Scientifique et Technique, BP. 95, 2050 Hammam-Lif, Tunisie
²  Laboratoire de Matériaux et Microélectronique de Provence, L2MP, Faculté des Sciences et Techniques, Université de Toulon et du Var, BP. 132, 83957 La Garde Cedex, France

Abstract
Evaporation is the most important process to recover salts from Tunisian natural brines. So it's essential to visualize the geometrical representations of the system involved in this case Na ⁺, K ⁺, Mg ²⁺/CI ^-,SO ₄^2- - H ₂O. Those representations allow us to navigate through the diagram and to draw crystallisation paths. Many techniques have been successfully tested over the last century such as the van't Hoff projection and the Janecke one, and were used to resolve the complexity of the multicomponent problem. The DPAO is a computer based visualization method proposed to enable a simulation of brine evaporation and to foresee the solid phases deposed during the process.

© EDP Sciences 2004