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)

Microaerobic-light

Aerobic-dark

NW16
(55.38 ml)C

KMS24
(81.25 ml)C

NW16
(81.63 ml)C

KMS24
(114.25 ml)C

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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