Dye Adsorption on Expanding Three-Layer Clays - Green Chemistry for Dyes Removal from Wastewater - page 351

Table 9.8 Efect of temperature on the adsorption of anionic dyes.
Adsorbents Dyes name Adsor

dosage

Te m p
Range °K

ΔH
kJ/mol

ΔS
kJ/mol

ΔG
kJ/mol

Reference

Na-Montmorillonite acid fuchsin 1 g/L 288

313

-186.02 -590.78 -10.12 [23]

Bentonite Congo Red 2 g/L 298

328

12.37 0.11 -21.104

-23.36

[37]

CTAB-bentonite Congo Red 2 g/L 298

328

12.71 0.13 -27.19

-29.87

[37]

Natural bentonite Congo Red 5 g/L 298

333

-13.02 7.41 -15.25

-15.53

[39]

Ca-bentonite Congo Red 2 g/L 293

323

5.14 0.004 -6.49

-11.17

[63]

KSF-DP Montmorillonite Remazol Brilliant Blue R 2.5 g/L 298

323

77.02 277 -6.87

-12.5

[72]

Sodium-pillared bentonite SupranoYellow 4GL 1 g/L 303

323

-32.32 -0.008 -14.77

-12.30

[73]

Al-pillared bentonite SupranoYellow 4GL 1 g/L 303

323

15.92 0,009 -13.00

-14.42

[73]

DTMA-bentonite Reactive Blue 19 2 g/L 293

333

-4.55 0.69 -25.04

-26.43

[82]

Alginate/organophilic
montmorillonite

Acid Green 4 g/L 303

323

-42.6 46 -2.4 [97]

CTAB-bentonite SupranoYellow 4GL 2 g/L 278

323

33.68 0.19 -19.14

-27.69

[99]