Paper Title:
Lead and Cadmium Immobilization by Polymeric Sponges Coated with Hydroxyapatite
  Abstract

Polymeric sponges coated with hydroxyapatite were used in lead and cadmium uptake experiments in order to mimetizes heavy metal incorporation by bone tissue. The hydroxyapatite-coated sponges (S-HA) were obtained by hydrothermal alkali conversion from monetite. The results showed that S-HA were efficient in immobilizing Pb and Cd. The uptake experiments using hydroxyapatite powder (HA) removed almost 100% of Pb2+ and 59% of Cd2+. When polymeric sponges coated with hydroxyapatite were used, the removal of Cd2+ and Pb2+ decreased, respectively, to closely 14 % and 74%, after 24 hours sorption. Before and after sorption experiment MEV analysis indicated precipitation of pyromorphite on hydroxyapatite-coated sponges.

  Info
Periodical
Key Engineering Materials (Volumes 396-398)
Main Theme
Edited by
Marcelo Prado and Cecília Zavaglia
Pages
561-564
DOI
10.4028/www.scientific.net/KEM.396-398.561
Citation
E. Mavropoulos, N. C.C. da Rocha, M.L.F.M. Kede, M. H. Prado da Silva, J. C. Moreira, A. M. Rossi, "Lead and Cadmium Immobilization by Polymeric Sponges Coated with Hydroxyapatite", Key Engineering Materials, Vols. 396-398, pp. 561-564, 2009
Online since
October 2008
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