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The Sereď Leached Nickel Ores Residues - A Magnetic Sorbent for Fission Radionuclides and Lead Contaminants of Solids
Macášek, F., Kufčáková, J., Rajec, P., Kopunec, R., Jakabský, Š., Lovás, M. and Hredzák, S. The Sereď Leached Nickel Ores Residues - A Magnetic Sorbent for Fission Radionuclides and Lead Contaminants of Solids Chemical Papers, Vol.58, No. 3, 2004, 163-169
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
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MIMEType |
Size |
Downloads |
n583a163.pdf
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583a163.pdf |
application/pdf |
481.92KB |
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| Author(s) |
Macášek, F.
Kufčáková, J.
Rajec, P.
Kopunec, R.
Jakabský, Š.
Lovás, M.
Hredzák, S.
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| Title |
The Sereď Leached Nickel Ores Residues - A Magnetic Sorbent for Fission Radionuclides and Lead Contaminants of Solids
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| Journal name |
Chemical Papers
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| Publication date |
2004
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| Year available |
2004
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| Volume number |
58
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| Issue number |
3
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| ISSN |
0366-6352
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| Start page |
163
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| End page |
169
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2004
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| Language |
english
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| Subject |
250000 Chemical Sciences
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| Abstract/Summary |
Black powdered residues from ammoniacal leaching of iron-nickel laterite ores at Sereď plant (further: SOR), the raw and mechanochemically activated by the grinding in potassium ferrocyanide solution in vibrating, ball or attrition mills, were used as a seminatural magnetic sorbent. The sorption properties for Cs+, Sr2+ Pb2+, and Eu3+ ions were evaluated using the Toth sorption isotherm. Activation of sorbent occurs on a small fraction of surface. The vibrating mill activation appears as the most efficient in respect of its activation, though the biggest increase of specific surface was achieved by attrition grinding. Speciation by the Tessier and BCR standard leaching procedures indicates differences between the ions. Raw and activated SOR have convenient sorption properties for caesium, strontium, lead and partially also for trivalent lanthanides. That, together with their magnetic properties makes them promising for treatment of radioactive contaminated soils and sediments. Sorption of anions was demonstrated by TcO4- sorption as a result of secondary ion-exchange mechanism. The feasible desorption process and recycling of used SOR remains an open task.
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