Table 5. Comparison of isotherm constants for lead biosorption available in literature.

Sl. No.

Type of biomass

Freundlich
constant K_f

Langmuir constant
Q_max (mg/g)

Maximum
concentration
used (mg/L)

Reference

1

Saccharomyces cerevisiae

0.5149

55.71

100

Present study

2

Rhizopus nigricans

72.43

403.2

1000

Kogej and Pavko, 2001

3

Strepytomyces rimosus

30.1

137

750

Selatnia et al. 2004

4

Phanerochaete chrysosporium

5.406

61.35

30

Yetis et al. 2000

5

Sago waste

16.84

46.64

200

Quek et al. 1998

6

Neurospora crassa

1.4

43.29

100

Kiran et al. 2005

7

Enterobacter sp.

15.5

50.9

500

Lu et al. 2006