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J. Phys. IV France
Volume 11, Numéro PR10, Décembre 2001
Journées d'Étude des Équilibres entre Phases
Page(s) Pr10-63 - Pr10-70
Journées d'Étude des Équilibres entre Phases

J. Phys. IV France 11 (2001) Pr10-63-Pr10-70

DOI: 10.1051/jp4:20011008

Étude de l'évaporation d'une saumure naturelle. Corrélation conductivité-concentrations ioniques (Na+, K+, Mg2+, Cl-,SO24)

H. Hammi, A. M'nif and R. Rokbani

Laboratoire des Procédés Chimiques, INRST, BP. 95, 2050 Hammam Lif, Tunisia

During evaporation natural brine crystallizes different salts. The limit between two steps is generally pointed using the density of the liquid phase in equilibrium with the crystallized salt. This method presents some disadvantages when used in the field especially when the pretreated brine is used to recover epsomite by refrigerating it. The aim of this work is to establish a correlation between the measured conductivity and the specific density of a considered brine and then with its ionic composition. The plotted parameters will be used to define the highest limit before extracting magnesium sulfate from the brine.

© EDP Sciences 2001