Elimination of toxic factors in leachate to enhance biooxidation of sulfide ores

P. Rusin, J. Cassells, L. Quintana, Robert G Arnold, N. Chrisman

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Toxic substances in On solutions can retard biological leaching of sulfide dump ores. On solutions were analyzed for metals, organics and chloride and showed inhibitory concentrations of aluminum, manganese and chloride. Inhibition of bacterial activity by the solid fraction of On solution, with and without the organic constituents, was evaluated. Bacterial toxicity was evaluated by monitoring bacterial numbers, pH, Eh, and rates of iron oxidation. The On solution solids were toxic at 50% to 60% of their field concentration. Most of the toxicity of the On solution was due to the organic fraction. Different solvent extraction (SX) reagents show varying degrees of inhibition of T.ferrooxidans. Bacterial inhibitory effects of carriers and lixiviants used in the SX plant should be determined so that entrained SX reagents do not retard biological dump leach systems. The reagents used should be the most cost-effective and the least toxic.

Original languageEnglish (US)
Pages (from-to)173-177
Number of pages5
JournalMining Engineering
Volume47
Issue number2
StatePublished - Feb 1995
Externally publishedYes

Fingerprint

Ores
leachate
sulfide
Toxicity
chloride
toxicity
toxic substance
Solvent extraction
solid solution
Leaching
microbial activity
Manganese
Solid solutions
manganese
aluminum
leaching
Iron
Aluminum
oxidation
iron

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Cite this

Rusin, P., Cassells, J., Quintana, L., Arnold, R. G., & Chrisman, N. (1995). Elimination of toxic factors in leachate to enhance biooxidation of sulfide ores. Mining Engineering, 47(2), 173-177.

Elimination of toxic factors in leachate to enhance biooxidation of sulfide ores. / Rusin, P.; Cassells, J.; Quintana, L.; Arnold, Robert G; Chrisman, N.

In: Mining Engineering, Vol. 47, No. 2, 02.1995, p. 173-177.

Research output: Contribution to journalArticle

Rusin, P, Cassells, J, Quintana, L, Arnold, RG & Chrisman, N 1995, 'Elimination of toxic factors in leachate to enhance biooxidation of sulfide ores', Mining Engineering, vol. 47, no. 2, pp. 173-177.
Rusin, P. ; Cassells, J. ; Quintana, L. ; Arnold, Robert G ; Chrisman, N. / Elimination of toxic factors in leachate to enhance biooxidation of sulfide ores. In: Mining Engineering. 1995 ; Vol. 47, No. 2. pp. 173-177.
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