Adsorption of Arsenic, Lead, Cadmium, and Chromium Ions from Aqueous Solution Using a Protonated Chabazite: Preparation, Characterization, and Removal Mechanism

Table 2

Chemical composition of the chabazite and its modified form.

Zeolite	wt%								Si/Al ratio
	Fe	Ca	Mg	K	Si	Na	Al	Others
CH-N	3.76	5.95	4.31	3.12	60.11	3.65	18.22	0.88	3.3
CH-MS	3.75	0.00	3.98	3.00	64.65	0.00	24.10	0.52	2.8