1.3 Adsorbents
5
Table 1.2
Adsorption power of activated carbon arising from various materials
Temp. (°C) Equilibrium time (h) Initial concentration
range (mg/l)
pH
Material
Heavy metal Mass of adsorbent (g) Q
e (mg/g) References
60
0.67
10–50
7
Terminalia catappa
Linn Shell
Copper
0.05
38.34
[33]
30
± 1
0.67
40–240
6
Ceiba pentandra
hulls
Cadmium
0.5
19.5
[17]
30
0.67
10–40
5
Coir pith
Nickel
0.02
62.5
[34]
30
3
10–300
6
Waste coconut
buttons
Lead
0.1
92.72
[35]
30
3
10–300
7
Waste coconut
buttons
Mercury
0.1
78.84
[35]
30
3
10–300
6
Waste coconut
buttons
Copper
0.1
73.6
[35]
30
± 2
3
20–50
5
Sago waste
Mercury
0.05
55.60
[36]
30
± 1
0.83
40–200
6
Ceiba pentandra
hulls
Lead
0.3
25.5
[37]
30
± 1
0.83
40–200
6
Ceiba pentandra
hulls
Zinc
0.3
24.1
[37]
30
8–10
NM
4
Red mud
Lead
0.1
64.79
[38]
40
0.83
50–200
5
Euphorbia rigida
Lead
0.04
279.72
[39]
60
1
25–125
6.5
Thespesia populnea
bark
Copper
0.025
164.176
[12]
25
0.5
25–400
4.0
± 0.3 Cow bone
Lead
0.1
47.691
[40]
30
0.5
40
6–6.5
Cashew nut shells
Lead
0.6
28.90
[41]
25
1
25–40
5
Van apple pulp
Zinc
0.1
11.72
[42]
(continued)