[Rate of iron (Fe 2+) bacterial oxidation at different temperatures and concentrations of Thiobacillus ferrooxidans cells].

The rate of iron oxidation by bacteria Thiobacillus ferrooxidans was measured at different temperatures (5 and 23 degrees C) and concentrations of bacterial cells (10(8)/ml and less). At a cell concentration of 10(7)--10(8)/ml the rate of bacterial oxidation remained at a relatively high level at a lowered temperature. At a low cell concentration (10(6)/ml and less) the rate of bacterial oxidation was reduced at a temperature of 5--6 degrees C.