13-18 May 2018
Casino Conference Centre
Europe/Prague timezone

The Effect of Surface Properties on the Uranium Adsorption by Mesoporous Ceria

14 May 2018, 17:15
1h 30m
Gallery (Casino Conference Centre)

Gallery

Casino Conference Centre

Poster Separation Methods, Speciation Poster SEP

Speaker

Mrs Polyxeni Paschalidou (Department of Chemistry, University of Cyprus)

Description

CeO2 solids of different surface areas have been prepared by sol-gel reverse micelles method using non ionic surfactant Triton X-100. The samples have then characterized by N2 isothermal adsorption, SEM microscopy and FTIR spectroscopy. The effect of the BET surface area/surface groups of the solids on the U(VI) adsorption has been investigated by batch-type experiments and evaluated by correlating the surface parameters with the corresponding maximum adsorption capacity values, which varied between 0.108 and 0.162 mg g-1. The adsorption of U(VI) by CeO2 is well described by the Langmuir isotherm model indicating the predominance of one type’s interaction between the U(VI) ions and the surface hydroxyl groups and that the adsorption efficacy strongly depends on the BET surface/surface hydroxyl groups.

Primary authors

Mrs Polyxeni Paschalidou (Department of Chemistry, University of Cyprus) Mrs Ioanna Liatsou (Department of Chemistry, University of Cyprus) Prof. Ioannis Pashalidis (Department of Chemistry, University of Cyprus) Prof. Charis R Theocharis (Department of Chemistry, University of Cyprus)

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