Sorption purification of solutions with synthetic zeolites

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Abstract

The work is devoted to studying the possibility of using synthetic zeolites (nanodispersed hydroxyapatite and mechanically activated hydroxyapatite-zeolite mixture in a ratio of 1:1) as sorbents of chromium and nickel ions from the acidic aqueous solutions. The chemical qualitative and quantitative composition, morphology of the initial reagents and the obtained solutions were studied. It was found that the synthetic zeolite and the hydroxyapatite-zeolite mixture exhibit high sorption activity and sorption capacity with respect to chromium ions (the extraction degree of 99,96%), while nanodispersed hydroxyapatite allows obtaining the extraction degree of 98,73. As for the sorption of nickel from a solution, it was shown that the maximum extraction degree is achieved using the hydroxyapatite-zeolite sorbent (63,83%). The conducted studies allow us to recommend the obtained samples for use as sorbents for cleaning industrial waste solutions from toxic impurities, as well as for further studies with the aim of introducing it not only for the extraction of various ions from aqueous solutions, but also for use in various industries.

About the authors

Svetlana A. Bibanaeva

Institute of Solid State Chemistry of the Ural Branch of RAS

Email: bibanaeva@mail.ru
Researcher, Laboratory of Heterogeneous Processes in Chemistry

Vladimir M. Skachkov

Institute of Solid State Chemistry of the Ural Branch of RAS

Ph.D., Senior Researcher, Laboratory of Heterogeneous Processes in Chemistry

Nail A. Sabirzyanov

Institute of Solid State Chemistry of the Ural Branch of RAS

D. Sc., Chief Researcher, Laboratory of Heterogeneous Processes in Chemistry

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