Biomining in reverse gear: using bacteria to extract metals from oxidized ores
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Yn: Minerals Engineering, Cyfrol 75, Rhif 1, 01.05.2015, t. 2-5.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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TY - JOUR
T1 - Biomining in reverse gear: using bacteria to extract metals from oxidized ores
AU - Johnson, D.B.
AU - du Plessis, C.A.
PY - 2015/5/1
Y1 - 2015/5/1
N2 - Biomining, as traditionally practised, uses aerobic, acidophilic microorganisms to accelerate the oxidative dissolution of sulfide minerals present in ores and concentrates, thereby either causing target metals to be solubilised (e.g. copper) or made accessible to chemical extraction (e.g. gold). Many acidophiles are also able to catalyse the dissimilatory reduction of ferric iron in anoxic or oxygen-depleted environments, and can accelerate the reductive dissolution of ferric iron minerals, such as goethite, under such conditions. Recent work has demonstrated how this approach can be used to extract metals (nickel, copper, cobalt and manganese) from oxidised ores, such as laterites deposits, at low (∼30 °C) temperatures. Reductive mineral dissolution has been trialled successfully with a variety of ores, pointing to a generic application of this approach.
AB - Biomining, as traditionally practised, uses aerobic, acidophilic microorganisms to accelerate the oxidative dissolution of sulfide minerals present in ores and concentrates, thereby either causing target metals to be solubilised (e.g. copper) or made accessible to chemical extraction (e.g. gold). Many acidophiles are also able to catalyse the dissimilatory reduction of ferric iron in anoxic or oxygen-depleted environments, and can accelerate the reductive dissolution of ferric iron minerals, such as goethite, under such conditions. Recent work has demonstrated how this approach can be used to extract metals (nickel, copper, cobalt and manganese) from oxidised ores, such as laterites deposits, at low (∼30 °C) temperatures. Reductive mineral dissolution has been trialled successfully with a variety of ores, pointing to a generic application of this approach.
U2 - 10.1016/j.mineng.2014.09.024
DO - 10.1016/j.mineng.2014.09.024
M3 - Article
VL - 75
SP - 2
EP - 5
JO - Minerals Engineering
JF - Minerals Engineering
SN - 0892-6875
IS - 1
ER -