Uptake of Pb by hydrozincite, Zn-5(CO3)(2)(OH)(6)-Implications for remediation (Articolo in rivista)

Type
Label
  • Uptake of Pb by hydrozincite, Zn-5(CO3)(2)(OH)(6)-Implications for remediation (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.jhazmat.2009.12.026 (literal)
Alternative label
  • Lattanzi, Pierfranco; Meneghini, Carlo; De Giudici, Giovanni; Podda, Francesca (2010)
    Uptake of Pb by hydrozincite, Zn-5(CO3)(2)(OH)(6)-Implications for remediation
    in Journal of hazardous materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Lattanzi, Pierfranco; Meneghini, Carlo; De Giudici, Giovanni; Podda, Francesca (literal)
Pagina inizio
  • 1138 (literal)
Pagina fine
  • 1144 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 117 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-3 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • . (literal)
Titolo
  • Uptake of Pb by hydrozincite, Zn-5(CO3)(2)(OH)(6)-Implications for remediation (literal)
Abstract
  • Hydrozincite, Zns(CO3)(2)(OH)(6), periodically precipitates from heavy metal contaminated waters of the Rio Naracauli stream, Sardinia, in association with a biological photosynthetic community. The precipitation removes not only zinc from the waters, but also other toxic \"heavy metals\", such as Cd, Cu, Pb. The phenomenon is therefore of potential interest for \"soft\" remediation of contaminated waters. Previous cation exchange experiments suggested that binding of Pb to hydrozincite is fairly strong. This suggestion is in agreement with new release tests in deionized water and X-ray absorption spectroscopy (XAS) spectra collected at the Pb L-III edge for natural hydrozincites from Naracauli, and synthetic Pb-doped hydrozincites. The results suggest that, up to bulk concentration of 1.5 wt.% Pb, uptake of this metal occurs in two distinct ways: (1) as a substitution for Zn in the tetrahedral site of the hydrozincite structure, possibly via formation of a surface mononuclear tridentate inner sphere complex; (2) as an ill-defined, presumably amorphous, phase with a local atomic structure similar to cerussite. These data support the concept that Pb binding to hydrozincite is strong enough to make this mineral a potential sink for the metal. (C) 2009 Elsevier B.V. All rights reserved. (literal)
Prodotto di
Autore CNR

Incoming links:


Autore CNR di
Prodotto
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
data.CNR.it