Affiliation:
1. CBPF - Centro Brasileiro de Pesquisas Físicas
2. UFRJ
3. Fundação Oswaldo Cruz
4. Instituto Militar de Enegenharia - IME
5. Centro Brasileiro de Pesquisas Fisicas
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference7 articles.
1. N. C. C. Rocha, R. C. Campos, A. M. Rossi, E. L. Barbosa and G. T. Moure: Environ Sci Technol. Vol. 36 (2002), p.630.
2. E. Mavropoulos, A. M. Rossi, A. M. Costa, C. A. C. Perez and J. C. Moreira: Environ Sc. i Technol. Vol. 36 (2002), p.1625.
3. M. H. Prado da Silva, S. R. A. Santos, A. M. Rossi: Process for porous interconnected substrate coating synthesis intermediate and obtained porous product. (2007).
4. M. H. Prado da Silva, J. H. C. Lima, G. A. Soares, C. N. Elias, M. C. de Andrade, S. M. Best and I. R. Gibson: Surface and Coatings Technol. Vol. 137 (2001), pp.270-276.
5. Ma QY, Traina SJ, Logan TJ, Ryan, JA: Environ. Sci. Technol. Vol. 27 (1993), pp.1803-10.
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