Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 51, Issue 3, Pages 550-563Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2015.1086801
Keywords
Magnetic separation; nanoadsorbents; chitosan; heavy metals; iron oxides; nanocomposites
Funding
- CONICET
- PGI (UNS, Argentina) [24/ZQ09]
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This contribution provides insight on the elimination of heavy metals from water resources using magnetic separation. Nanocomposites based on magnetite and chitosan were prepared. An exhaustive characterization of the magnetic adsorbents was developed. Adsorption assays were performed in batch using Cu, Zn, Cd, and Cr as model heavy metals. The efficiency of magnetic adsorbents followed the order: Cu > Cd > Zn > Cr, with maximum values of 188, 159, 72, and 46 mg of Me/g of nanocomposite, respectively. Kinetics and mechanistic issues were studied. The magnetic materials were efficient for five to eight cycles using Cu(II),Cd(II), and Cr(VI).
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