Biosorbent

Q (mg/g)

Reference

Cu(II)

Pb(II)

Zn(II)

Bentonite

14.10

-

21.1

[33]

Pomegranate peel

1.31

13.87

-

[34]

Rice husk

-

0.62

19.61

[35]

Activated carbon derived from Cicer arietinum

17.77

20.69

19.93

[36]

Volcanic rock

10.87

9.52

4.46

[37]

Coir fibre

9.43

29.41

-

[16]

Phosphate rock

7.24

78.74

5.44

[38]

Poplar sawdust

3.24

-

-

[39]

Groundnut shells

4.46

-

7.62

[40]

Jute fibres

4.23

3.55

[41]

Polyporus tenoiculus

14.7

92

-

[42]

Tea waste

48

65

-

[11]

Cotton fibre

6.12

21.62

4.53

[43]

Chorella vulgaris

25.42

-

31.38

[44]

Residual biomass

28.34

92.20

25.37

[31]

CTS

3.89

25.00

23.81

This study

ES

34.48

90.90

35.71

This study

SB

3.65

21.28

40.00

This study