Table 3. Efficiency of heavy metals and sodium removal by viable cells of selected PNB strains under microaerobic-light and aerobic-dark conditions for 30 min. |
Heavy metals and Na |
Initial conc. (mg/L)A |
EfficiencyB (% biosorption) |
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Microaerobic-light |
Aerobic-dark |
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NW16 |
KMS24 |
NW16 |
KMS24 |
||
Cd |
0.75 |
2.33 ± 0.83a |
3.39 ± 0.19a |
6.99 ± 1.50b |
2.50 ± 0.89a |
Pb |
62.63 |
27.70 ± 2.78b |
22.82 ± 0.12a |
39.49 ± 1.44c |
21.34 ± 1.04 a |
Cu |
34.60 |
12.37 ± 0.89a |
11.96 ± 0.37a |
19.92 ± 0.99b |
11.95 ± 0.70a |
Zn |
58.50 |
4.63 ± 0.92ab |
4.57 ± 0.04ab |
5.46 ± 1.24 b |
3.20 ± 0.29a |
Na |
3.00% |
25.84 ± 0.73a |
26.51 ± 2.04a |
30.07 ± 1.74b |
31.12 ± 1.00c |
AUnless stated; BValues in same rows followed by a different letter are significantly different (p < 0.05) using Duncan’s multiple range test; CValue in a parenthesis is volume of culture broth that equal to 31.25 mg DW and the fresh cells were suspended in 50 ml of mixed elements solution to obtain 0.625 mg DW/ml cell suspension. |
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