Results 191 to 200 of about 12,109 (248)

Bioleaching of Galena (PbS)

open access: yes, 2012
Mejia, E. R.   +3 more
openaire   +1 more source

A Comprehensive Review on Cobalt Bioleaching from Primary and Tailings Sources

Mineral Processing and Extractive Metallurgy Review, 2023
The production of critical metals for emerging clean technologies also requires more sustainable, cleaner and cost-effective processing options. The recovery of cobalt (Co) via pyrometallurgical or hydrometallurgical methods has proved to be successful ...
A. K. Saim, F. Darteh
semanticscholar   +1 more source

Biotechnological Avenues in Mineral Processing: Fundamentals, Applications and Advances in Bioleaching and Bio-beneficiation

Mineral Processing and Extractive Metallurgy Review, 2022
Mineral biotechnological applications, e.g., bioleaching and bio-beneficiation, for waste treatment and resource recovery have invited due attention owing to their economic and eco-friendly benefits in comparison to the conventional methods.
Srabani Mishra   +3 more
semanticscholar   +1 more source

Modeling continuous bioleach reactors

Biotechnology and Bioengineering, 1999
The results of recent research have shown that the bioleaching of sulfide minerals occurs via a two-step mechanism. In this mechanism, the sulfide mineral is chemically oxidized by the ferric-iron in the bioleaching liquor. The ferrous-iron produced is subsequently oxidized to ferric-iron by the microorganism.
, Breed, , Hansford
openaire   +2 more sources

Bioleaching of molybdenite

Hydrometallurgy, 2008
Abstract Molybdenum was bioleached from molybdenite-containing mine waste samples and from high purity molybdenite in solutions amended with ferrous sulfate. Bioleaching of Mo occurred when solution Eh exceeded 750 mV to 800 mV (s.h.e.). The rate of bioleaching of high purity molybdenite increased with decreasing particle size, averaging 3.22 mg Mo/m
Gregory J. Olson, Thomas R. Clark
openaire   +1 more source

Bioleaching of nepheline

Hydrometallurgy, 1987
Abstract Organic acid leaching of nepheline has been studied under batch and semi-continuous laboratory conditions. Rates of leaching by citric and oxalic acids (as purified compounds and as the mixed product of Aspergillus niger fermentation) have been compared with those of hydrochloric acid for batches of mineral (−37 +53 μm) and acid stirred at ...
Andrew B. King, A.William L. Dudeney
openaire   +1 more source

Phosphate rock bioleaching

Biotechnology Letters, 1992
Microbiological acid solutions produced byThiobacillus ferrooxidans andThiobacillus thiooxidans on pyritiferous concentrate were used to solubilize phosphate rock with a high grade in P2O5. Five different mixtures of pyritiferous concentrate and phosphate rock, in different proportions, were used in adequate liquid culture media.
A. C. A. Costa   +2 more
openaire   +1 more source

A critical review of bioleaching of rare earth elements: The mechanisms and effect of process parameters

, 2020
Rare earth elements (REEs) are important high-tech materials with widespread industrial applications and a high risk of supply disruption. Current physico-chemical methods for REE recovery are energy intensive, complex, and costly. Thus, it is crucial to
P. Rasoulnia, R. Barthen, A. Lakaniemi
semanticscholar   +1 more source

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