Zeolite Application in Wastewater Treatment

Table 6

Phosphate removal by different zeolites, along with experimental conditions and adsorption and kinetic models.

Zeolite	(°C)	Contact time	Concentration (mg·L^-1)	S/L ratio (g·L^-1)	pH	PO4^3- sorption capacity (mg·g^-1)	Adsorption isotherm model	Adsorption kinetic model	References
NaP1	25-60	24 h	12.5-200	1	5.3	11.4	Langmuir	—	[95]
LaP1						58.2
NaA						15.7
LaA						48.9
Clinoptilolite						20.2
La-clinoptilolite						25.5
Fe-heulandite	25	3 h	1-16	2.4	7	<0.2	Freundlich	—	[168]
Granular zeolite	25	20 min	20	25	1.8	3.3	Langmuir	—	[92]
Zeolite A	70	4 h	50-1000	6.6	5	52.9	Langmuir	Pseudo-second-order	[93]
Clinoptilolite	25	2 h	10-100	48	2-4	1.3	Langmuir	—	[96]
TiO2-modified clinoptilolite				20		34.2