Preparation, Characterization, and Application of Metakaolin-Based Geopolymer for Removal of Methylene Blue from Aqueous Solution

Table 9

Thermodynamic parameters for the adsorption of MB onto geopolymer.

Adsorbent	Adsorbate	ΔH° (KJ·mol^−1)	ΔS° (KJ·mol^−1·K^1)	ΔG° (KJ·mol^−1)
				293 K	323 K	343 K
Geopolymer	MB	5.1	0.03	−3.503	−4.021	−5.048