Functionalized MCM-41 Type Sorbents for Heavy Metals in Water: Preparation and Characterization
Four novel sorbents were prepared by introducing functional groups as –NH2 -SH and –COOH into MCM-41 in various positions. The sorbents were characterized for BET surface area, pore size distribution, pore volume, surface functionality and surface group density. Multicomponent studies were also conducted. After sorption the metal-coated sorbents were tested to investigate the bonding mechanism of the metal ion using FTIR and XRD. The capacity was tested by batch process for Cadmium, Chromium, Lead and Zinc to study the effects of the different functional groups and their stereo specificity. The data were analyzed using various isotherms, kinetic and thermodynamic equations for the design of adsorption systems.
KeywordsCluster Anion Heteropoly Acid Phosphomolybdic Acid Sorbent Dose Heteropoly Anion3
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