Lead and Cadmium Immobilization by Polymeric Sponges Coated with Hydroxyapatite

Elena Mavropoulos; Nilce C.C.  da Rocha; M.L.F.M. Kede; Marcelo Henrique Prado da Silva; Josino C. Moreira; Antonella M. Rossi

doi:10.4028/www.scientific.net/KEM.396-398.561

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 396-398Lead and Cadmium Immobilization by Polymeric...

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.

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Periodical:

Key Engineering Materials (Volumes 396-398)

Pages:

561-564

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.396-398.561

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Online since:

October 2008

Authors:

Elena Mavropoulos, Nilce C.C. da Rocha, M.L.F.M. Kede, Marcelo Henrique Prado da Silva, Josino C. Moreira, Antonella M. Rossi

Keywords:

Cadmium (Cd), Hydroxyapatite (HAP), Lead, Monetite

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References

[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.

Google Scholar

[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.

Google Scholar

[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).

Google Scholar

[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.

DOI: 10.1016/s0257-8972(00)01125-7

Google Scholar

[5] Ma QY, Traina SJ, Logan TJ, Ryan, JA: Environ. Sci. Technol. Vol. 27 (1993), pp.1803-10.

Google Scholar

[6] Chen M, Ma L, Singh PS, Cao R, Melamed R. Advances in Environmental Research; Vol. 8 (2003) pp.93-102.

Google Scholar

[7] N. C. C. da Rocha, E. Mavropoulos, M. H. Prado da Silva, R. C. de Campos, A. M. Rossi: Key Engineering Materials Vols. 330-332 (2007) pp.123-126. a) b).

DOI: 10.4028/www.scientific.net/kem.330-332.123

Google Scholar