TABLE 5.

Energetic and steric parameters calculated by Model 1 for the adsorption of Cr(VI) and Mn(VII) on PD/MCM-41 composite.

	T	n	D M	Q 0	ΔE
	(°C)		(mg/g)	(mg/g)	(kJ/mol)
	25	1.27	71.29	91.34	24.62
Cr(VI)	40	1.26	78.36	98.73	25.88
	55	1.25	82.28	102.85	27.70
	25	1.32	72.39	95.55	18.48
Mn(VII)	40	1.31	77.27	101.23	19.89
	55	1.27	87.14	110.67	21.32