Abstract
The toxicity of 15 flotation reagents (including xanthates, carbamates, thiophosphates, a mercaptobenzthiazole and a frothing reagent) used for concentrating sulfide minerals to five species of mineral-oxidising, moderately thermophilic and acidophilic microorganisms was assessed. The acidophiles tested included four bacteria (a Leptospirillum isolate, Acidimicrobium ferrooxidans, Acidithiobacillus caldus and a Sulfobacillus isolate) and one archaeon (a Ferroplasma isolate). There was wide variation both in terms of the relative toxicities of the different flotation reagents and the sensitivities of the microorganisms tested. In general, the dithiophosphates and the mercaptobenzothiol were the most toxic, while the Leptospirillum and Ferroplasma isolates were the most sensitive of the acidophilic microorganisms. The significance of these findings, in view of the expanding application of ore concentrates bioprocessing, is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 2011-2016 |
| Number of pages | 6 |
| Journal | Biotechnology letters |
| Volume | 24 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - Dec 1 2002 |
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All Science Journal Classification (ASJC) codes
- Biotechnology
- Bioengineering
- Applied Microbiology and Biotechnology
Cite this
Toxicity of flotation reagents to moderately thermophilic bioleaching microorganisms. / Okibe, Naoko; Johnson, D. Barrie.
In: Biotechnology letters, Vol. 24, No. 23, 01.12.2002, p. 2011-2016.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Toxicity of flotation reagents to moderately thermophilic bioleaching microorganisms
AU - Okibe, Naoko
AU - Johnson, D. Barrie
PY - 2002/12/1
Y1 - 2002/12/1
N2 - The toxicity of 15 flotation reagents (including xanthates, carbamates, thiophosphates, a mercaptobenzthiazole and a frothing reagent) used for concentrating sulfide minerals to five species of mineral-oxidising, moderately thermophilic and acidophilic microorganisms was assessed. The acidophiles tested included four bacteria (a Leptospirillum isolate, Acidimicrobium ferrooxidans, Acidithiobacillus caldus and a Sulfobacillus isolate) and one archaeon (a Ferroplasma isolate). There was wide variation both in terms of the relative toxicities of the different flotation reagents and the sensitivities of the microorganisms tested. In general, the dithiophosphates and the mercaptobenzothiol were the most toxic, while the Leptospirillum and Ferroplasma isolates were the most sensitive of the acidophilic microorganisms. The significance of these findings, in view of the expanding application of ore concentrates bioprocessing, is discussed.
AB - The toxicity of 15 flotation reagents (including xanthates, carbamates, thiophosphates, a mercaptobenzthiazole and a frothing reagent) used for concentrating sulfide minerals to five species of mineral-oxidising, moderately thermophilic and acidophilic microorganisms was assessed. The acidophiles tested included four bacteria (a Leptospirillum isolate, Acidimicrobium ferrooxidans, Acidithiobacillus caldus and a Sulfobacillus isolate) and one archaeon (a Ferroplasma isolate). There was wide variation both in terms of the relative toxicities of the different flotation reagents and the sensitivities of the microorganisms tested. In general, the dithiophosphates and the mercaptobenzothiol were the most toxic, while the Leptospirillum and Ferroplasma isolates were the most sensitive of the acidophilic microorganisms. The significance of these findings, in view of the expanding application of ore concentrates bioprocessing, is discussed.
UR - http://www.scopus.com/inward/record.url?scp=0036905482&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036905482&partnerID=8YFLogxK
U2 - 10.1023/A:1021118915720
DO - 10.1023/A:1021118915720
M3 - Article
AN - SCOPUS:0036905482
VL - 24
SP - 2011
EP - 2016
JO - Biotechnology Letters
JF - Biotechnology Letters
SN - 0141-5492
IS - 23
ER -