A comprehensive study on iodine uptake by selected LDH phases via coprecipitation, anionic exchange and reconstruction

authored by

Luis Iglesias, Clemens Walther, Francisco Medina, Alex Hölzer, Andreas Neumann, M. Janeth Lozano-Rodriguez, Mayra G. Álvarez, Natallia Torapava

Abstract

We explored the use of selected layered double hydroxides (LDHs) of different compositions and obtained by means of different routes (i.e., coprecipitation, anionic exchange and reconstruction) as iodine/iodate adsorbents. The influence of speciation (iodide vs. iodate) on iodine uptake was rather strong, resulting in much lower iodide incorporation. The Fourier transform of iodine K X-ray absorption edge data (EXAFS) of all iodate-LDHs showed a single I–O scattering path of 1.8 Å. Thermal stability and leaching experiments showed that the incorporated iodate and iodide were rather loosely bound in the interlayer space and were easily released under heating to 180 °C and leaching with Milli-Q water and brine solution.

Organisation(s)

Centre for Radiation Protection and Radioecology

External Organisation(s)

Universitat Rovira i Virgili
RWTH Aachen University
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
European Synchrotron Radiation Facility

Type

Article

Journal

Journal of Radioanalytical and Nuclear Chemistry

Volume

307

Pages

111-121

No. of pages

11

ISSN

0236-5731

Publication date

07.07.2016

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Analytical Chemistry, Nuclear Energy and Engineering, Radiology Nuclear Medicine and imaging, Pollution, Spectroscopy, Public Health, Environmental and Occupational Health, Health, Toxicology and Mutagenesis

Sustainable Development Goals

SDG 3 - Good Health and Well-being

Electronic version(s)

https://doi.org/10.1007/s10967-015-4285-0 (Access: Closed)