Studies on Cadmium Uptake by Hydroxyapatite

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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)

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Edited by:

Xingdong Zhang, Xudong Li, Hongsong Fan, Xuanyong Liu

Pages:

123-126

Citation:

N. C.C. da Rocha et al., "Studies on Cadmium Uptake by Hydroxyapatite", Key Engineering Materials, Vols. 330-332, pp. 123-126, 2007

Online since:

February 2007

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$38.00

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DOI: https://doi.org/10.1007/bf02556369

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