Acid-Modified Clinoptilolite – Effective Sorbent of Sc(III) from Aqueos Solutions

V.O. Vasylechko; Ch.B. Korpalo; G.V. Gryshchouk

doi:10.4028/www.scientific.net/SSP.230.8

Paper Titles

Preface and Conference Board

Multitarget Sputtering of Piezoelectric Mixed Oxide Thin Films onto Flexible Substrates
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Acid-Modified Clinoptilolite – Effective Sorbent of Sc(III) from Aqueos Solutions
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Structural Behaviour of Solid Solution in the SmAlO₃−TbAlO₃ System
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Synthesis, Structure Refinement and Conductivity of Ln_2-xCd_xMoO_6-x/2
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Reference Book on the Oxide Systems Space Diagrams as a Tool for Data Mining
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Acid-Modified Clinoptilolite – Effective Sorbent of Sc(III) from Aqueos Solutions

Abstract:

The sorption properties of acid-modified Transcarpathian clinoptilolite towards Sc (III) under dynamic conditions have been studied. It was found that the most effective acid-modifier is 0.5M HCl solution. Maximal sorption capacity is observed in the previously heat-treated at 50 oC samples of H-clinoptilolite in low alkaline solutions (pH=8.5). At this conditions almost all of the Sc (III) ions are in the form of neutral hydroxo complex [Sc (OH)₃(H₂O)₃]. The sorption capacity of H-clinoptilolite towards Sc (III) ions under optimum conditions is 9.98 mg/g. The best desorbent of Sc (III) from acid-modified clinoptilolite is 6 M HCl solution. This desorbent removes 98% of sorbed Sc (III).

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Periodical:

Solid State Phenomena (Volume 230)

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8-13

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.230.8

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Online since:

June 2015

Authors:

V.O. Vasylechko*, Ch.B. Korpalo, G.V. Gryshchouk

Keywords:

Acid-Modified Clinoptilolite, Scandium, Solid Phase Extraction, Sorption

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