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- W2353802617 abstract "pH is one of the most complicated factors which affect the removal of aqueous cadmium ion by hydroxyapatite (Hap), because it determines the speciation of cadmium ion, characteristics of Hap dissolution and properties of Hap surface, and all of which are nearly related to the removal of cadmium ion. Experiment results indicate that the removal efficiencies of cadmium increases as pH value increases, while the increase is more rapid under strong acid (pH3) conditions. In a broad pH range, the dissolution mechanisms of Hap in aqueous cadmium and blank solution accord with non-stoichiometric dissolution and hydrogen catalytic model. From calculation of complexation balance, the speciation and its distribution coefficient of cadmium can be obtained at different pH value. The ζ potential of Hap in blank solution is negative, and the electronegative values increase as pH increases. On the basis of experiment analyses, we can conclude that the mechanisms of cadmium removal are surface-complexation and surface-potential-adsorption, and dissolution-precipitation does not exist." @default.
- W2353802617 created "2016-06-24" @default.
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- W2353802617 date "2004-01-01" @default.
- W2353802617 modified "2023-09-25" @default.
- W2353802617 title "Impact of pH on the Removal of Aqueous Cadmium Ion by Hydroxyapatite" @default.
- W2353802617 hasPublicationYear "2004" @default.
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