Study of sorption processes of copper on synthetic hydroxyapatite

O. Rosskopfová; M. Galamboš; J. Ometáková; M. Čaplovičová; P. Rajec

doi:10.1007/s10967-012-1711-4

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 293: Issue 2

Study of sorption processes of copper on synthetic hydroxyapatite

Authors:

O. Rosskopfová

O. Rosskopfová Department of Nuclear Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, 842 15 Bratislava, Slovak Republic

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M. Galamboš

M. Galamboš Department of Nuclear Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, 842 15 Bratislava, Slovak Republic

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J. Ometáková

J. Ometáková Department of Nuclear Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, 842 15 Bratislava, Slovak Republic

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M. Čaplovičová

M. Čaplovičová Department of Geology of Mineral Deposits, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, 842 15 Bratislava, Slovak Republic

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P. Rajec

P. Rajec Department of Nuclear Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská Dolina, 842 15 Bratislava, Slovak Republic

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Pages:: 641–647

Online Publication Date:: 09 Mar 2012

Publication Date:: 01 Aug 2012

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-012-1711-4

Keywords:: Sorption; Hydroxyapatite; Copper; Langmuir isotherm

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Abstract

The sorption of copper on synthetic hydroxyapatite was investigated using a batch method and radiotracer technique. The hydroxyapatite sample prepared by a wet precipitation process was of high crystallinity with Ca/P ratio of 1.688. The sorption of copper on hydroxyapatite was pH independent ranging from 4 to 6 as a result of buffering properties of hydroxyapatite. The adsorption of copper was rapid and the percentage of Cu sorption was >98% during the first 15–30 min of the contact time. The experimental data for sorption of copper have been interpreted in the term of Langmuir isotherm. The sorption of Cu²⁺ ions was performed by ion-exchange with Ca²⁺ cations on the crystal surface of hydroxyapatite under experimental conditions. The competition effect of Zn²⁺, Fe²⁺ and Pb²⁺ towards Cu²⁺ sorption was stronger than that of Co²⁺, Ni²⁺ and Ca²⁺ ions. The ability of the bivalent cations to depress the sorption of copper on hydroxyapatite was in the following order Pb²⁺ > Fe²⁺ > Zn²⁺ > Co²⁺ ≈ Ni²⁺.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)