Journal of Mining / 2014 / Article / Tab 1

Research Article

Reduction of Hexavalent Chromium by Viable Cells of Chromium Resistant Bacteria Isolated from Chromite Mining Environment

Table 1

Effect of Cr(VI) concentration on Cr(VI) reduction by Arthrobacter sp. SUK 1201.

Incubation, hr% Cr(VI) reduced
Concentration of Cr(VI), µM
50100200300400600800

1266.0 ± 0.746.0 ± 1.216.5 ± 2.628.0 ± 1.234.4 ± 1.935.8 ± 2.235.4 ± 1.9
24100.0 ± 0.060.0 ± 2.132.3 ± 3.136.0 ± 1.650.0 ± 2.346.6 ± 2.145.0 ± 2.6
48100.0 ± 0.0100.0 ± 0.087.5 ± 1.573.3 ± 2.371.0 ± 3.570.0 ± 0.868.0 ± 2.5

(Cr(VI) reduction was carried out in V. B. broth containing 50–800 µM of Cr(VI). The initial cell density was maintained at cells/mL. Incubation: 48 h at 25°C under continuous shaking (120 rpm). Residual Cr(VI) was estimated by usual diphenylcarbazide method. Results represent mean of triplicate experiments ± standard error).