Synthetic carbonate apatites as inorganic cation exchangers. Exchange characteristics for toxic ions

Michihiro Miyake, Kazunari Watanabe, Yoji Nagayama, Hiroshi Nagasawa, Takashi Suzuki

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

The ion-exchange characteristics between Ca2+ ions in carbonate apatites containing 6 and 16 wt % CO3 2- ions and toxic ions (Zn2+, Cd2+, Hg2+, and Pb2+) in aqueous solution have been investigated in detail at 25 °C. From the results, it was found that the ion-exchange removal characteristics for Zn2+, Cd2+ and Pb2+ ions were enhanced with increasing CO3 2- ion content; however, those for Hg2+ ions were similar for different CO3 2- content. The reaction with Pb2+ ions was especially remarkable and formed Pb2+ ion-exchanged carbonate apatites. The effect of substitution of CO3 2- for PO4 3- ions was concluded to be a loosening effect on the skeletal structure of the apatite.

Original languageEnglish
Pages (from-to)2303-2306
Number of pages4
JournalJournal of the Chemical Society, Faraday Transactions
Volume86
Issue number12
DOIs
Publication statusPublished - 1990
Externally publishedYes

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exchangers
Ion exchangers
Poisons
apatites
Cations
carbonates
Ion exchange
Ions
cations
ions
carboapatite
Apatites
Substitution reactions
substitutes
aqueous solutions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Synthetic carbonate apatites as inorganic cation exchangers. Exchange characteristics for toxic ions. / Miyake, Michihiro; Watanabe, Kazunari; Nagayama, Yoji; Nagasawa, Hiroshi; Suzuki, Takashi.

In: Journal of the Chemical Society, Faraday Transactions, Vol. 86, No. 12, 1990, p. 2303-2306.

Research output: Contribution to journalArticle

Miyake, Michihiro ; Watanabe, Kazunari ; Nagayama, Yoji ; Nagasawa, Hiroshi ; Suzuki, Takashi. / Synthetic carbonate apatites as inorganic cation exchangers. Exchange characteristics for toxic ions. In: Journal of the Chemical Society, Faraday Transactions. 1990 ; Vol. 86, No. 12. pp. 2303-2306.
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