Lead immobilization by non-apatite-type calcium phosphates in aqueous solutions

The immobilization of lead (II) ion by β-Ca 3(PO 4) 2, CaHPO 4·2H 2O and Ca(H 2PO 4) 2·H 2O was found to proceed more favorably than that by calcium hydroxyapatite (CaHAp), probably due to rather greater solubility of former three calcium phosphates than that of CaHAp. The contribution of dissolutio...

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Bibliographic Details
Published in:Inorganic chemistry communications 2002-02, Vol.5 (2), p.156-158
Main Authors: Sugiyama, Shigeru, Ichii, Takuya, Hayashi, Hiromu, Tomida, Tahei
Format: Article
Language:English
Subjects:
Calcium hydrogen phosphates
Calcium phosphates
Immobilization
Lead
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Summary:The immobilization of lead (II) ion by β-Ca 3(PO 4) 2, CaHPO 4·2H 2O and Ca(H 2PO 4) 2·H 2O was found to proceed more favorably than that by calcium hydroxyapatite (CaHAp), probably due to rather greater solubility of former three calcium phosphates than that of CaHAp. The contribution of dissolution–precipitation mechanism was suggested to the immobilization.
ISSN:1387-7003
1879-0259
DOI:10.1016/S1387-7003(02)00326-X