Modelagem termodinâmica por extração por solvente de metais divalentes em meio sulfato usando D2EHPA

Química Nova

Clenilson Da Silva Sousa Junior²  Dalton De Sousa Ximenes²  Marisa Nascimento¹  Karina Rodrigues Paiva Ranauro Do Nascimento¹  Osvaldo Galvão Caldas Da Cunha¹ 

[1] ,Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro Departamento de Química Rio de Janeiro RJ ,Brasil

关键词: modeling;    solvent extraction;    divalent metals;   

DOI  :  10.1590/S0100-40422012000200013

来源: SciELO

【 摘 要 】

The extraction of divalent metals (Mn2+, Ni2+, Co2+ and Cu2+) in the system MSO4 - H2SO4 - H2O - D2EHPA in isoparaffin (17/21) was studied by a thermodynamic model based on chemical equilibria with mass and charge balance equations. The activity coefficients of all solutes in the aqueous phase were calculated by Davies equation. By applying this model, the equilibrium concentrations of solutes were calculated from de concentration of divalent metals and pH. The predicted distribution coefficients for the divalents metals were in good agreement with experimental results.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License