ISSN 2594-5327
61º Congresso Anual da ABM — vol. 61, num.61 (2006)
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The study of the ternary systems containing boric acid are of great industrial importance because the possibility to choose best conditions to separation this compound from borates ores. For them, it is convenient to make an isothermal study of this system and to plot curves show equilibrium conditions of the solid substance and the ternary liquid. For that the solubility of each substance in aqueous solution with changeable quantity of them must be determined, at constant pressure and temperature. In this paper we are showing the result of the experimental study of the equilibrium of the H3BO3-Na2SO4-H2O system at 50° C and 70° C, and atmospheric pressure. The results are presented in a ternary phase diagram form. The solubility curve of H3BO3 in Na2SO4 saturated solutions are constructed too, showing that solubility of the first one is increasing as the concentration of the second one is increasing. In the temperature and composition domain studied, the solid phases observed were H3BO3, Na2SO4 and a mixture of them.
The study of the ternary systems containing boric acid are of great industrial importance because the possibility to choose best conditions to separation this compound from borates ores. For them, it is convenient to make an isothermal study of this system and to plot curves show equilibrium conditions of the solid substance and the ternary liquid. For that the solubility of each substance in aqueous solution with changeable quantity of them must be determined, at constant pressure and temperature. In this paper we are showing the result of the experimental study of the equilibrium of the H3BO3-Na2SO4-H2O system at 50° C and 70° C, and atmospheric pressure. The results are presented in a ternary phase diagram form. The solubility curve of H3BO3 in Na2SO4 saturated solutions are constructed too, showing that solubility of the first one is increasing as the concentration of the second one is increasing. In the temperature and composition domain studied, the solid phases observed were H3BO3, Na2SO4 and a mixture of them.
Palavras-chave
Boric acid; Sodium sulphate; Equilibrium ternary diagram.
Boric acid; Sodium sulphate; Equilibrium ternary diagram.
Como citar
Moreno, Nicolás Gerardo;
Gamarra, Marilena Lefter de;
Flores, Jorge Eduardo.
PHASE EQUILIBRIA STUDY OF THE BORIC ACID-SODIUM SULPHATE-WATER SYSTEM AT 50°C AND 70°C1
,
p. 1268-1272.
In: 61º Congresso Anual da ABM,
Rio de Janeiro,
2006.
ISSN: 2594-5327
, DOI 10.5151/2594-5327-0148
