ADSORPTION OF THYMOL CAN LIMIT BACTERIAL OXIDATION OF PYRITE

Authors
MELINE F MUSTIN C DEDONATO P
Citation
F. Meline et al., ADSORPTION OF THYMOL CAN LIMIT BACTERIAL OXIDATION OF PYRITE, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 322(11), 1996, pp. 959-964
Citations number
17
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes → ACNP
ISSN journal
12518050
Volume
322
Issue
11
Year of publication
1996
Pages
959 - 964
Database
ISI
SICI code
1251-8050(1996)322:11<959:AOTCLB>2.0.ZU;2-W
Abstract
Measurements of bacterial inhibition and physico-chemical adsorption o n mineral surfaces, have pointed out the strong inhibitory effect of a dsorbed thymol on the oxidizing activity of Thiobacillus ferrooxidans against pyrite. For a concentration up to 80 mg.l(-1) in pyrite or iro n(II) media, thymol exhibits a bactericide effect. On the other hand, with pyrite as substrate, a weak residual amount in solution (2 mg.l(- 1)) is sufficient to induce a reversible bacterial inhibition without killing bacteria. Thus, thymol could regulate microbial activity in su lfide environments.