Study on the thermodynamic properties of nickel-cobalt ore bio-leaching solution

DOI

10.2991/ifeesd-16.2016.178How to use a DOI?

Keywords

Conductivity; activity coefficient; bioleaching solution; nickel-Cobalt

Abstract

Researches about the separation process of valuable metals for nickel-cobalt ore bio-leaching solution had already been continuously studied, while studies about its thermodynamic properties has not been carries out. This paper conducted research about thermodynamic properties including conductivity, activity coefficient of nickel-cobalt ore bio-leaching solution. Conductivity of nickel and cobalt in bio-leaching solution system was determined with conductivity method at a temperature range from 298K to 313K. The mean activity coefficient of nickel-cobalt in bioleaching solution was calculated with relative formula, and effect of the temperature and the concentration to the mean activity coefficient have been discussed. The comparison of thermodynamic properties has been researched in presence of bacteria and aseptic condition. To reflect the solution components' effect on its thermodynamic state, this paper used the Meissner-Pitzer Model to analyze the variation rule of the activity coefficient, and quantified change of thermodynamic properties of the system when the pH value and ion concentration changed.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Guiying Zhou
AU  - Chuyue Hou
AU  - Jiankang Wen
PY  - 2016/05
DA  - 2016/05
TI  - Study on the thermodynamic properties of nickel-cobalt ore bio-leaching solution
BT  - Proceedings of the 2016 International Forum on Energy, Environment and Sustainable Development
PB  - Atlantis Press
SP  - 996
EP  - 999
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesd-16.2016.178
DO  - 10.2991/ifeesd-16.2016.178
ID  - Zhou2016/05
ER  -