Sl.No Bacterial strain Time interval in
hours
Cr (VI)  Absorbance at
OD 382nm
1 P1 3 0.52
    6 0.60
    9 0.65
    12 0.70
    24 0.80
    48 1.00
2 P2 3 0.50
    6 0.62
    9 0.70
    12 0.82
    24 0.88
    48 0.98
3 P3 3 0.48
    6 0.56
    9 0.72
    12 0.82
    24 0.90
    48 0.96
4 P4 3 0.50
    6 0.74
    9 0.82
    12 0.88
    24 0.94
    48 1.00
Table 7a: Cr (VI) reduction by 4 bacterial isolates grown in LB broth supplemented 1ppm Cr (VI).