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

Figure 5

Illustrative 1D scheme of the stages of CH-N modification process where the formation of silanol, Brönsted acid sites (BAS), Lewis acid sites (LAS), and trigonal silicon ions is shown. The interaction of the CH-MS with divalent cations M(II) and anions like As(V). This figure was adapted from Uytterhoeven et al. [81] and Juzsakova et al. [45].