Catalog Home Page

Effects of temperature on the rates of iron and sulfur oxidation by selected bioleaching Bacteria and Archaea: Application of the Ratkowsky equation

Franzmann, P.D., Haddad, C.M., Hawkes, R.B., Robertson, W.J. and Plumb, J.J. (2005) Effects of temperature on the rates of iron and sulfur oxidation by selected bioleaching Bacteria and Archaea: Application of the Ratkowsky equation. Minerals Engineering, 18 (13-14). pp. 1304-1314.

Link to Published Version: http://dx.doi.org/10.1016/j.mineng.2005.04.006
*Subscription may be required

Abstract

Bioleaching rates are affected by temperature and temperature is a major selective pressure for the organisms that will inhabit a bioleaching operation. The relationship of microbial activity to temperature is best described by the Ratkowsky equation. Ratkowsky and Arrhenius equations were applied to temperature versus sulfur or ferrous iron oxidation data for selected bioleaching microorganisms. Extrapolated cardinal temperatures for iron and sulfur oxidation, and activation energies were derived from the fitted Ratkowsky and Arrhenius equations. The data provided definition of the temperature operating windows, to a precision not previously available, for the majority of species that are frequently encountered as the biological catalysts in tank and heap bioleaching environments.

Publication Type: Journal Article
Murdoch Affiliation: School of Biological Sciences and Biotechnology
Publisher: Elsevier BV
Copyright: © 2005 Elsevier Ltd.
URI: http://researchrepository.murdoch.edu.au/id/eprint/15022
Item Control Page Item Control Page