Utilisation of native microbes from a spent chalcocite test heap
MetadataShow full item record
A variety of acidophilic iron and/or sulphur-oxidising microbes capable of growth on several substrates (chalcopyrite, pyrite, ferrous ion, sulphur, glucose) in the range 30?60 C were recovered from a spent chalcocite/chalcopyrite/pyrite heap. Several isolates exhibited tolerance to salt, up to 5 g/L NaCl, and to the metals nickel, cobalt, zinc and copper at up to 50 g/L.Leaching tests on chalcopyrite concentrate indicated higher copper yields when native isolates were employed, compared with the laboratory reference strains Acidithiobacillus ferrooxidans (DSM 583) and Sulfobacillus thermosulfidooxidans (DSM 9293). After 30 days, several native isolates had leached 20?30% more copper than the abiotic controls during experiments conducted at 45 C. The results demonstrate that the native isolates are potential bioleaching candidates, adapted to diverse growth conditions.
Keeling, S.E. and Davies, K. L. and Palmer, M. L. and Townsend, D. E. and Watkin, E. and Johnson, J. A. and Watling, H. R. (2006) Utilisation of native microbes from a spent chalcocite test heap, Hydrometallurgy 83(1):124-131.
Copyright 2006 Elsevier B.V. All rights reserved
Showing items related by title, author, creator and subject.
Tanda, B.; Oraby, E.; Eksteen, Jacques (2017)Glycine solutions in an alkaline environment have been shown to be able to leach copper from its oxide, native and sulfide minerals as a copper glycinate complex. This paper explores the recovery of copper from its aqueous ...
Complete genome sequence of Acidihalobacter prosperus strain F5, an extremely acidophilic, iron- and sulfur-oxidizing halophile with potential industrial applicability in saline water bioleaching of chalcopyriteKhaleque, H.; Corbett, M.; Ramsay, Joshua; Kaksonen, A.; Boxall, N.; Watkin, E. (2017)© 2017 Successful process development for the bioleaching of mineral ores, particularly the refractory copper sulfide ore chalcopyrite, remains a challenge in regions where freshwater is scarce and source water contains ...
Gillespie, T.; Keppel, Gunnar; Pau, S.; Price, J.; Jaffre, T.; O'Neill, K. (2013)Aim: We examine variation in woody plant species richness and endemism within tropical dry forest on oceanic islands and determine what climatic and biogeographic metrics best explain native species richness and endemism ...