Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/24321
Tipo: Artigo
Título: Iron oxide/carbon nanotubes/chitosan magnetic composite film for chromium species removal
Autor(es): Marques Neto, José de Oliveira
Bellato, Carlos Roberto
Silva, Danilo de Castro
Abstract: An adsorbent in the form of a CLCh/MWCNT/Fe film was prepared using multiple walled carbon nanotubes (MWCNT) doped with magnetic iron oxide and deposited in crosslinked chitosan (CLCh). The CLCh/MWCNT/Fe was characterized by Inductively Coupled Plasma Mass Spectrometry (ICP-MS), nitrogen (N2) adsorption/desorption, X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive Spectrometry (EDS), Infrared Spectroscopy (IR) and Raman Spectroscopy. The CLCh/MWCNT/Fe film presented a maximum adsorption capacity for Cr(III) of 66.25 mg/g (150 min) and for Cr(VI) of 449.30 mg/g (60 min) at 25 °C. The CLCh/MWCNT/Fe can be easily removed from the aqueous solution by a mechanical separation or by magnetization due to its magnetic properties. In ten consecutive reutilization adsorption cycles the CLCh/MWCNT/Fe film presented efficiency losses of only 12% and 6% for the removal of Cr(III) and Cr(VI), respectively.
Palavras-chave: Carbon nanotubes
Chitosan
Magnetic separation
Chromium removal
Editor: Chemosphere
Tipo de Acesso: Elsevier B. V.
URI: https://doi.org/10.1016/j.chemosphere.2018.11.080
http://www.locus.ufv.br/handle/123456789/24321
Data do documento: Mar-2019
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