✦ LIBER ✦

Short communication: Adverse effect of surface-active reagents on the bioleaching of pyrite and chalcopyrite byThiobacillus ferrooxidans

✍ Scribed by G. Huerta; B. Escobar; J. Rubio; R. Badilla-Ohlbaum

Publisher: Springer
Year: 1995
Tongue: English
Weight: 194 KB
Volume: 11
Category: Article
ISSN: 1573-0972
DOI: 10.1007/bf00286383

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✦ Synopsis

Oxidation of Fe(II) iron and bioleaching of pyrite and chalcopyrite by Thiobacillus ferrooxidans was adversely affected by isopropylxanthate, a flotation agent, and by LIX 984, a solvent-extraction agent, each at ≤ 1 g/l. The reagents/l were adsorbed on the bacterial surface, decreasing the bacteria's development and preventing biooxidation. Both reagents inhibited the bioleaching of pyrite and LIX 984 also inhibited the bioleaching of chalcopyrite.