Table 2.

Calculated thermodynamic parameters for Cr(VI), AB-225, AV-109, and AG-40 adsorption onto MgAl-LDH@SiO₂.

Pollutant	25 °C	ΔGΘ (kJ mol−1) 35 °C	45 °C	ΔHΘ (kJ mol−1)	ΔSΘ (J mol−1 K−1)	R2
Cr(VI)	−38.95	−40.37	−41.84	4.16	144.5	0.994
AB-225	−39.69	−41.32	−43.03	10.15	167.1	0.996
AV-109	−37.17	−39.71	−41.29	8.30	155.9	0.998
AG-40	−40.42	−41.96	−43.55	6.25	156.5	0.994