Journal
HYDROMETALLURGY
Volume 96, Issue 1-2, Pages 1-5Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hydromet.2008.07.011
Keywords
Activity coefficient; Bioleaching solution; Ion-selective electrode; Relative partial molar free energy
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Funding
- National Basic Research Program of China [2004CB619206]
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This work reports the results about the determination of mean activity coefficients and relative partial molar free energies for copper sulfide mineral bioleaching Solutions by potentiometric method at 25 degrees C. The experimental potentiometric data were obtained by combining a diamond film-cupric ion-selective electrode (Cu(II) ISE), containing a KNO(3) filling Solution. and an Ag/AgCl electrode. The measurements were performed, at constant ionic strength. in different Series of copper Sulfide mineral bioleaching solutions. The non-ideal behavior of the system was described oil the base of the Pitzer ion-interaction model for mixed salts. Meanwhile, the relative partial molar free energies of bioleaching solution were obtained. The determination of the thermodynamic properties offers a basic data for the study of copper sulfide mineral bioleaching solutions. (C) 2008 Elsevier B.V. All rights reserved.
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