Adsorption of Heavy Metals in Contaminated Water Using Zeolite Derived from Agro-Wastes and Clays: A Review

Table 11

Summary of adsorption thermodynamics on synthetic zeolites.

Zeolite	Raw material	Metal ion	T (K)	(kJ/mol)	(kJ/mol)	(kJ/mol)	References
Zeolite Na-P1	Coal fly ash	Cr^3+	298	164	23	−85	[252]
			308	165
			318	166
Zeolite X	Raw municipal bio-slag	Cs^+	288	14.482	20.53	0.021	[253]
			298	14.272
			308	14.062
11Å-tobermorite	Coal fly ash	Cu^2+	298.15	4.368	−1.090	−9.047	[254]
			318.15	4.906
			338.15	5.439
		Pb^2+	298.15	4.342	−2.760	−5.277
			318.15	4.923
			338.15	5.683
Zeolite Y	Fly ash	Cu^2+	301.15	−7.67	14.14	72.43	[255] bohr
			318.15	−8.90
			338.15	−10.35
		Ni^2+	301.15	−7.48	16.94	81.08
			318.15	−8.86
			338.15	−10.48