"Bioshrouding": a novel approach for securing reactive mineral tailings
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Yn: Biotechnology Letters, Cyfrol 30, Rhif 3, 03.2008, t. 445-9.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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TY - JOUR
T1 - "Bioshrouding"
T2 - a novel approach for securing reactive mineral tailings
AU - Johnson, D Barrie
AU - Yajie, Liu
AU - Okibe, Naoko
PY - 2008/3
Y1 - 2008/3
N2 - A novel technique ("bioshrouding") for safeguarding highly reactive sulfidic mineral tailings deposits is proposed. In this, freshly milled wastes are colonised with ferric iron-reducing heterotrophic acidophilic bacteria that form biofilms on reactive mineral surfaces, thereby preventing or minimising colonisation by iron sulfide-oxidising chemolithotrophs such as Acidithiobacillus ferrooxidans and Leptospirillum spp. Data from initial experiments showed that dissolution of pyrite could be reduced by between 57 and 75% by "bioshrouding" the mineral with three different species of heterotrophic acidophiles (Acidiphilium, Acidocella and Acidobacterium spp.), under conditions that were conducive to microbial oxidative dissolution of the iron sulfide.
AB - A novel technique ("bioshrouding") for safeguarding highly reactive sulfidic mineral tailings deposits is proposed. In this, freshly milled wastes are colonised with ferric iron-reducing heterotrophic acidophilic bacteria that form biofilms on reactive mineral surfaces, thereby preventing or minimising colonisation by iron sulfide-oxidising chemolithotrophs such as Acidithiobacillus ferrooxidans and Leptospirillum spp. Data from initial experiments showed that dissolution of pyrite could be reduced by between 57 and 75% by "bioshrouding" the mineral with three different species of heterotrophic acidophiles (Acidiphilium, Acidocella and Acidobacterium spp.), under conditions that were conducive to microbial oxidative dissolution of the iron sulfide.
KW - Acetobacteraceae/growth & development
KW - Acidithiobacillus/growth & development
KW - Biofilms
KW - Ferrous Compounds/chemistry
KW - Iron/chemistry
KW - Minerals/chemistry
KW - Mining/methods
KW - Oxidation-Reduction
KW - Sulfides/chemistry
U2 - 10.1007/s10529-007-9574-4
DO - 10.1007/s10529-007-9574-4
M3 - Article
C2 - 17975731
VL - 30
SP - 445
EP - 449
JO - Biotechnology Letters
JF - Biotechnology Letters
SN - 0141-5492
IS - 3
ER -