Table 4.

Thermodynamic parameters of MB adsorption on PVPA-BMEP hydrogels.

Adsorbent	T (K)	ΔG° (kJ moL−1)	ΔH° (kJ mL−1)	ΔS° (J mL−1 K−1)
PVPA-BMEP (5%)	299	−7.42	−46.9	−132
	308	−6.23
	318	−4.91
	328	−3.59
PVPA-BMEP (10%)	299	−9.12	−41.6	−109
	308	−8.14
	318	−7.06
	328	−5.97
PVPA-BMEP (20%)	299	−9.94	−40.3	−102
	308	−9.03
	318	−8.01
	328	−6.99
PVPA-BMEP (40%)	299	−10.5	−39.6	−97.3
	308	−9.67
	318	−8.69
	328	−7.72