Details
| Original language | English |
|---|---|
| Pages (from-to) | 111-121 |
| Number of pages | 11 |
| Journal | Journal of Radioanalytical and Nuclear Chemistry |
| Volume | 307 |
| Issue number | 1 |
| Publication status | Published - 7 Jul 2016 |
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.
Keywords
- Aqueous systems, Immobilization, Iodate, Iodide, Layered double hydroxide, Nuclear waste
ASJC Scopus subject areas
- Chemistry(all)
- Analytical Chemistry
- Energy(all)
- Nuclear Energy and Engineering
- Medicine(all)
- Radiology Nuclear Medicine and imaging
- Environmental Science(all)
- Pollution
- Chemistry(all)
- Spectroscopy
- Medicine(all)
- Public Health, Environmental and Occupational Health
- Environmental Science(all)
- Health, Toxicology and Mutagenesis
Sustainable Development Goals
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In: Journal of Radioanalytical and Nuclear Chemistry, Vol. 307, No. 1, 07.07.2016, p. 111-121.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A comprehensive study on iodine uptake by selected LDH phases via coprecipitation, anionic exchange and reconstruction
AU - Iglesias, Luis
AU - Walther, Clemens
AU - Medina, Francisco
AU - Hölzer, Alex
AU - Neumann, Andreas
AU - Lozano-Rodriguez, M. Janeth
AU - Álvarez, Mayra G.
AU - Torapava, Natallia
PY - 2016/7/7
Y1 - 2016/7/7
N2 - 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.
AB - 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.
KW - Aqueous systems
KW - Immobilization
KW - Iodate
KW - Iodide
KW - Layered double hydroxide
KW - Nuclear waste
UR - http://www.scopus.com/inward/record.url?scp=84953363270&partnerID=8YFLogxK
U2 - 10.1007/s10967-015-4285-0
DO - 10.1007/s10967-015-4285-0
M3 - Article
AN - SCOPUS:84953363270
VL - 307
SP - 111
EP - 121
JO - Journal of Radioanalytical and Nuclear Chemistry
JF - Journal of Radioanalytical and Nuclear Chemistry
SN - 0236-5731
IS - 1
ER -