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4. Biodegradation of organic reagent: cyanide
As we have seen with refractory gold ores, cyanide is used in the mining industry mainly for extracting precious metals and as a flotation agent. It has many other uses, in particular in electroplating and in many organic syntheses (EDTA, cyanoacrylate, amino acids, etc.); it is also found in coke-oven effluents in the company of phenols, pyridine, tar, etc.
Biodegradation of cyanide effluents has been applied to effluents from coking plants, the mining industry and, more recently, the chemical industry. .
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Biodegradation of organic reagent: cyanide
Conclusion
Bibliography
Software tools
Balance sheet calculation tools for the extractive minerals industry (USIMPAC, BILCO, INVENTEO & ECHANT) – CASPEO : http://www.caspeo.net/
Websites
BioMinE, the film "The Invisible Miners" as an introduction to biohydrometallurgy and a visit to KCC's facility in Uganda on YouTube: https://www.youtube.com/watch?v=cKMkH1rcj38
Minerals Engineering Online: http://www.min-eng.com/index.html
...Events
Biohydrometallurgy: a symposium on the applications of biohydrometallurgy, sponsored by the journal Minerals Engineering, held every two years in England and South Africa alternately.
http://www.min-eng.com/biohydromet18/paps.html
International Biohydrometallurgy Symposium: a symposium on scientific advances...
Patents
A process for the leaching of chalcopyrite – Patent WO 38/39491 – Applicant and inventor: Anthony PINCHES.
Process for continuous treatment of sulfide minerals for metal recovery – Patent FR 96.01748 – Inventors: D. MORIN and P. OLLIVIER.
Process and apparatus for continuous treatment of copper sulfide minerals – Patent FR 99.11178 – Inventors D. MORIN, P. NORRIS.
Directory
Manufacturers – Suppliers – Distributors
Milton Roy Mixing : http://miltonroymixing.com
BACTECH: http://www.bactechgreen.com/
BHP : http://www.bhp.com
...Statistical and economic data
There's no denying that bioleaching occupies a growing niche covering primary and secondary resources (residues and by-products) with low recoverable metal content and containing penalizing elements such as arsenic.
This is evidenced by the strong growth in the number of demonstration and industrial-scale facilities tackling an ever wider range of substances, whether in static (figure...
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