Abstract
The removal of cations such as Pb2+, Mn2+, Co2+ and Cu2+ in aqueous solution by four synthetic hydroxyapatites (S-1, S-2, S-3, S-4) has been investigated using both batch and column methods. The removal is due not only to an adsorption effect but also to an ion-exchange reaction between the cations in solution and the Ca2+ ions of the apatites. The order of the ions according to the amount exchanged was as follows: Pb2+ > Cu2+ > Mn2+ ≃ Co2+. Pb2+ ions were readily removed by the apatites and the maximum value for the exchange of Pb2+ ions was 230 mg per g of S-4 apatite. The apatites, particularly S-4, would seem to be possible agents for the removal of toxic Pb2+ ions. The selectivity of the apatites for the cations can be explained by considering the radii and the electronegativities of the ions.
| Original language | English |
|---|---|
| Pages (from-to) | 3605-3611 |
| Number of pages | 7 |
| Journal | Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases |
| Volume | 78 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1982 |
| Externally published | Yes |
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ASJC Scopus subject areas
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Synthetic hydroxyapatites as inorganic cation exchangers. Part 2. / Suzuki, Takashi; Hatsushika, Toshiaki; Miyake, Michihiro.
In: Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, Vol. 78, No. 12, 1982, p. 3605-3611.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Synthetic hydroxyapatites as inorganic cation exchangers. Part 2
AU - Suzuki, Takashi
AU - Hatsushika, Toshiaki
AU - Miyake, Michihiro
PY - 1982
Y1 - 1982
N2 - The removal of cations such as Pb2+, Mn2+, Co2+ and Cu2+ in aqueous solution by four synthetic hydroxyapatites (S-1, S-2, S-3, S-4) has been investigated using both batch and column methods. The removal is due not only to an adsorption effect but also to an ion-exchange reaction between the cations in solution and the Ca2+ ions of the apatites. The order of the ions according to the amount exchanged was as follows: Pb2+ > Cu2+ > Mn2+ ≃ Co2+. Pb2+ ions were readily removed by the apatites and the maximum value for the exchange of Pb2+ ions was 230 mg per g of S-4 apatite. The apatites, particularly S-4, would seem to be possible agents for the removal of toxic Pb2+ ions. The selectivity of the apatites for the cations can be explained by considering the radii and the electronegativities of the ions.
AB - The removal of cations such as Pb2+, Mn2+, Co2+ and Cu2+ in aqueous solution by four synthetic hydroxyapatites (S-1, S-2, S-3, S-4) has been investigated using both batch and column methods. The removal is due not only to an adsorption effect but also to an ion-exchange reaction between the cations in solution and the Ca2+ ions of the apatites. The order of the ions according to the amount exchanged was as follows: Pb2+ > Cu2+ > Mn2+ ≃ Co2+. Pb2+ ions were readily removed by the apatites and the maximum value for the exchange of Pb2+ ions was 230 mg per g of S-4 apatite. The apatites, particularly S-4, would seem to be possible agents for the removal of toxic Pb2+ ions. The selectivity of the apatites for the cations can be explained by considering the radii and the electronegativities of the ions.
UR - http://www.scopus.com/inward/record.url?scp=0001752667&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001752667&partnerID=8YFLogxK
U2 - 10.1039/F19827803605
DO - 10.1039/F19827803605
M3 - Article
AN - SCOPUS:0001752667
VL - 78
SP - 3605
EP - 3611
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 12
ER -