• P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

Analysis of adsorption behavior of lead ion on to surface modified AlPO4 materials

Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2011, v.24 no.4, pp.275-281
https://doi.org/10.5806/AST.2011.24.4.275





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Abstract

AlPO_4-type material was synthesized by a reaction of Al(OH)_3 and H_3PO_4 with organic templates from wastewater of detergent manufacturer. The surface of material was coated with carboxylate groups by the reaction of succinic anhydride with surface amino groups which were formed by treatment of the material with APTMS. Powder XRD patterns showed the characteristic patterns of AlPO_4. Morphology of the material was examined using a SEM and the functional groups were investigated by FT-IR analysis. The surface charge of a aqueous suspension was analyzed: AlPO4-NH2 has positively charged surface while AlPO_4-COOH has negatively charged one. They were used for the removal of toxic metals from aqueous solution. The lead ions were adsorbed on the surface by the formation of complexes with carboxylate of surface and Kd was 91.1 mL/g. In conclusion, the AlPO4-COOH might be applicable in the removal of toxic metal ions from aqueous system.

keywords
<TEX>$AlPO_4$</TEX>, ion-exchange, lead, surface charge, complex formation


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