Environmental Engineering Reference
In-Depth Information
Table 9.5
Examples of modiied bentonite clays for the removal of cationic dyes.
Modiication Process
Dye Name
Speciic
Surface Area
Adsorption
Capacity
Reference
Co-saturated (Co-)
Crystal violet
Not provided
0.56 mmol/g
[27]
Zn-saturated (Zn-)
Crystal violet
Not provided
0.50 mmol/g
[27]
Ni-saturated (Ni-)
Crystal violet
Not provided
0.41 mmol/g
[27]
Acid Activation (for 0.2 M H
2
SO
4
)
Crystal violet
110 m
2
/g
Raw Bentonite:
36.17 m
2
/g
0.51 mmol/g
[28]
Acid Activation (for 5 M HCl)
Methylene blue
Not provided
20.16 mg/g
[29]
Tetrabutyl ammonium chloride (TBAC)
Methylene blue
Not provided
34.84 mg/g
[107]
Trimethyl ammonium bromide (CTAB)
Methylene blue
Not provided
6.41 mg/g
[107]
Cetyltrimethylammonium (CTMA)
Crystal violet
Not provided
106.56 L/g
[108]
Benzyltriethylammonium
(BTEA)
Crystal violet
Not provided
43.26 L/g
[108]
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