As(III) oxidation by MnO2 coated PEEK-WC nanostructured capsules (Articolo in rivista)

Type
Label
  • As(III) oxidation by MnO2 coated PEEK-WC nanostructured capsules (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jhazmat.2011.11.023 (literal)
Alternative label
  • Alessandra Criscuoli a, Swachchha Majumdar b, Alberto Figoli a, Ganesh C. Sahoo b, Patrizia Bafaro c, Sibdas Bandyopadhyay b, Enrico Drioli a,c (2012)
    As(III) oxidation by MnO2 coated PEEK-WC nanostructured capsules
    in Journal of hazardous materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Alessandra Criscuoli a, Swachchha Majumdar b, Alberto Figoli a, Ganesh C. Sahoo b, Patrizia Bafaro c, Sibdas Bandyopadhyay b, Enrico Drioli a,c (literal)
Pagina inizio
  • 281 (literal)
Pagina fine
  • 287 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • https://inis.iaea.org/search/search.aspx?orig_q=RN:44108211 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • a Institute on Membrane Technology, ITM-CNR, Via P. Bucci Cubo 17/C, 87030 Rende (CS), Italy b Central Glass & Ceramic Research Institute, 196, Raja S. C. Mullick Rd., 700032 Kolkata, India c Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci Cubo 42/A, 87030 Rende (CS), Italy (literal)
Titolo
  • As(III) oxidation by MnO2 coated PEEK-WC nanostructured capsules (literal)
Abstract
  • PEEK-WC nanostructured capsules were prepared by the phase inversion technique and used as support for the coating of a manganese dioxide layer. The coating was done by a chemical treatment of the capsules followed by a thermal one. The presence of the MnO2 layer was confirmed by scanning electron microscopy (SEM), back scattering electron (BSE), energy dispersive X-ray (EDX) and X-ray diffraction (XRD) analysis. The produced capsules were, then, tested for As(III) oxidation in batch. The experiments consisted in treating 165 ml of As(III) solution with 1 g of coated capsules at fixed temperature (15 oC) and pH (5.7-5.8). In particular, the efficiency of the system was investigated for different As(III) concentrations (0.1, 0.3, 0.7 and 1 ppm). For feeds at lower As(III) content (0.1-0.3 ppm), tests lasted for 8 h, while prolonged runs (up to 48 h) were carried out on more concentrated solutions (0.7 and 1 ppm). The produced capsules were able to oxidize As(III) into As(V) leading to complete conversion after 3 and 4 h for feed concentrations of 0.1 and 0.3 ppm, respectively. (literal)
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