Paper Titles
Effect of Ca/P Molar Ratio and Heat Treatment on Thermal Decomposition and Reconstitution of Hydroxyapatite
p.107
Apatite-Forming Ability of Polymer Substrates Irradiated by Oxygen Cluster Ion Beams
p.111
Hydroxyapatite Precursor Phases Identification by X-Ray Diffraction Using Synchrotron Radiation
p.115
Molecular and Crystal Structure Characterization of Calcium-Deficient Apatite
p.119
Studies on Cadmium Uptake by Hydroxyapatite
p.123
Lessening Hydroxyapatite Ceramics Particles Adverse Effects by Serum Modification: A Preliminary In Vitro Study and Mechanism Analysis
p.127
Cell Proliferation on Titania Layer with In Vitro Apatite Forming Ability
p.131
In Vivo Evaluation of Hydrothermally Converted Hydroxyapatite as a Bone Graft Substitute
p.135
Electrohydrodynamic Processing Routes for Bioceramics
p.139

Studies on Cadmium Uptake by Hydroxyapatite

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Abstract:

Cadmium uptake by hydroxyapatite from aqueous solution was studied in time intervals between 2 minutes and 96 hours, using different Cd2+ concentrations (21 to 768 mg L-1). The solution pH after Cd2+ uptake was assessed. Dissolution experiments at fixed pH were performed in order to evaluate the ion exchange process. Cd2+sorption by hydroxyapatite is fast and it happens simultaneously by different mechanisms. Ion exchange is the main mechanism, where mechanism Cd2+ present in aqueous solution replaces Ca2+ from hydroxyapatite structure.

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Periodical:

Key Engineering Materials (Volumes 330-332)

Pages:

123-126

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.330-332.123

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Online since:

February 2007

Authors:

Nilce C.C. da Rocha, Elena Mavropoulos, Marcelo Henrique Prado da Silva, R. C. de Campos, Antonella M. Rossi

Keywords:

Cadmium (Cd), Complexation, Ion-Exchange, Mechanism

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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