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

Table 3

Other wastes in the synthesis of zeolites.

Waste material	Zeolite formed	Synthesis method	Product yield (%)	Reference
Coal combustion fly ash	Analcime, faujasite, gismondine	Hydrothermal treatment	70–80	[193]
Municipal solid waste fly ash and waste bottle powder	Perlialite, zeolite A and Y	Fusion hydrothermal	—	[194]
Volcanic ash	Na-mordenite	Hydrothermal synthesis	80	[195]
Municipal solid waste	Clinoptilolite	Hydrothermal conversion	69	[196]
Blenod fly ash	Na-X faujasite	Hydrothermal conversion	20–25	[197]
Paper sludge ash	Na-PI zeolite	Hydrothermal synthesis	—	[198]