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RECORD NUMBER: 30 OF 106

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Main Title

Effects of Aqueous Al, Cd, Cu, Fe(II), Ni, and Zn on Pb Immobilization by Hydroxyapatite.

Author

Ma, Q. Y. ; Traina, S. J. ; Logan, T. J. ; Ryan, J. A. ;

CORP Author

Ohio State Univ., Columbus. Dept. of Agronomy. ;Florida Univ., Gainesville. Dept. of Soil and Water Science.;Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.

Publisher

c1994

Year Published

1994

Report Number

EPA-R-816843-01-0; EPA/600/J-94/421;

Stock Number

PB95-128070

Additional Subjects

Water pollution control ; Lead(Metal) ; Ground water ; Soil pollution ; Heavy metals ; Toxic substances ; Waste treatment ; Hydroxy compounds ; Soil analysis ; Remedial action ; Technology assessment ; Reprints ; In situ remediation ; Hydroxyapatite ; Hydroxypromorphite

Holdings

Library	Call Number	Additional Info	Location	Last Modified	Checkout Status
NTIS	PB95-128070	Some EPA libraries have a fiche copy filed under the call number shown.		07/26/2022

Collation

12p

Abstract

The effects of aqueous Al, Cd, Cu, Fe(II), Ni, or ZN or Pb immobilization by hydroxyapatite (Ca10(PO4)6(OH)2) were studied. Lead was removed mainly via hydroxyapatite dissolution and hydroxypyromorphite (Pb10(PO4)6(OH)2) precipitation in the presence of these metals with a Pb removal efficiency of 37 to 100%. Hydroxyapatite was effective in removing these added metals, especially at low concentrations. Hydroxyapatite selectively removed Pb from solution in the presence of aqueous Al, Cd, Cu, Fe(II), Ni, and Zn. The results supported their earlier findings that hydroxyapatite has potential to be used for in situ immobilization of Pb in Pb contaminated soils and wastes.

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