Removal of U(VI) from aqueous solution using TiO2 modified β-zeolite-Reference-Cited by-同舟云学术

Removal of U(VI) from aqueous solution using TiO2 modified β-zeolite

Published:2017-06-03 Issue:12 Volume:105 Page:1005-1013
ISSN:2193-3405
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

Peng Liu¹²,Ni Yuan¹²,Wei Xiong¹²,Hanyu Wu¹²,Duoqiang Pan¹²,Wangsuo Wu¹²

Affiliation:

1. Radiochemistry and Nuclear Environment Laboratory , Lanzhou University , Lanzhou 730000 , China

2. Key Laboratory of Special Function Materials and Structure Design , Ministry of Education , Lanzhou 730000 , China

Abstract

Abstract β-Zeolite was synthesized and modified with TiO2. The synthesized materials were characterized and used for removal of U(VI) from aqueous solutions. The influences of pH, contact time and temperature on U(VI) adsorption onto modified β-zeolite by TiO2 were studied by batch technique, and XPS was employed to analysed the experimental data. The dynamic process showed that the adsorption of U(VI) onto TiO2/β-zeolite matched the pseudo-second-order kinetics model, and the adsorption of U(VI) were significantly dependent on pH values. Through simulating the adsorption isotherms by Langmuir, Freundlich and Dubini–Radushkevich (D–R) models, it could be seen, respectively that the adsorption patterns of U(VI) onto TiO2/β-zeolite were mainly controlled by surface complexation, and the adsorption processes were endothermic and spontaneous. The modification of β-zeolite by TiO2 it shows a novel material for the removing of U(VI) from water environment for industrialized application.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/ract-2017-2765/pdf

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