Affiliation:
1. Department of Chemistry, Panimalar Engineering College, Chennai-600123, India
2. Department of Chemistry, Sree Sastha Institute of Engineering Technology, Chennai-600123, India
Abstract
The chromium(VI) ions present in the tannery waste was efficiently remove by using silver-alumina
impregnated maghemite/magnetite nanocomposites as adsorbents. The as-synthesized adsorbents were
characterized by XRD, SEM-EDAX, HR-TEM and FT-IR techniques. The adsorption process was
found to be pH, time, dosage of adsorbent and temperature dependent. The adsorption data appropriate
well with the pseudo-first-order kinetics, pseudo-second-order kinetics Langmuir and Freundlich
isotherms. Among the two synthesized nanoabsorbents, the silver-alumina impregnated magnetite
(SAMG) nanocomposite was found to be most effective absorbent, and its maximum chromium removal
efficiency was achieved to be 98.81% within 2 h at a pH of 3.0 and at dosage of 0.5 g/L.
Publisher
Asian Journal of Chemistry
Cited by
2 articles.
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