The Characterization of Salt Tolerance in Biomining Microorganisms and the Search for Novel Salt Tolerant Strains

Abstract:

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In this study an acidic saline drain in the Western Australian wheat belt was sampled and enriched for salt tolerant chemolithotrophic microorganisms in acidic media containing up to 100 gL-1 NaCl. A mixed consortium was obtained which grows at pH 1.8 and oxidises iron (II) in the presence of up to 30 gL-1 NaCl. In comparative tests (growth rates and iron (II) oxidation rates) it was found that NaCl concentrations >3.5 gL-1 generally cause reduced growth and iron (II) oxidation rates in known biomining organisms. The results help to set a benchmark for NaCl tolerance in known biomining microorganisms and will lead to the generation of a consortium of microorganisms that can oxidise iron (II) effectively in saline process water.

Info:

Periodical:

Advanced Materials Research (Volumes 71-73)

Edited by:

Edgardo R. Donati, Marisa R. Viera, Eduardo L. Tavani, María A. Giaveno, Teresa L. Lavalle, Patricia A. Chiacchiarini

Pages:

283-286

DOI:

10.4028/www.scientific.net/AMR.71-73.283

Citation:

C. M. Zammit et al., "The Characterization of Salt Tolerance in Biomining Microorganisms and the Search for Novel Salt Tolerant Strains", Advanced Materials Research, Vols. 71-73, pp. 283-286, 2009

Online since:

May 2009

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Price:

$35.00

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