Comparison of sorbents for caesium removal from aqueous environment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000103" target="_blank" >RIV/26722445:_____/18:N0000103 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Comparison of sorbents for caesium removal from aqueous environment
Original language description
This study compares the sorbent effectiveness of a caesium removal from water solutions. Caesium, namely the 137Cs isotope, is a fission product of uranium (235U) breakdown. The isotope 137Cs with the half-life decay of 30 years is an undesirable contaminant in a primary coolant of nuclear power plant. The 137Cs isotope is main contributor to overall radioactivity in a reactor coolant. Caesium leaks in the coolant water of a primary circuit trough microcracks in fuel rods. Damage of fuel rods is quite common, but usually less than 0,02 % per a reactor campaign. Caesium in the technological water needs to be removed due to high radioactivity. This work compares two zeolite materials and their ability to remove caesium from aqueous solution. Zeolites are, in general, hydrated aluminosilicate materials that behave as cation exchangers. They are able to exchange cations from an aqueous solution for cations located on their surface, particularly for Na+ , K+ , Mg2+ and Ca2+. A natural zeolite and its modified form with the high content of clinoptilolite were used for sorption experiments. The modification was performed using Co(NO3)2 and K4[Fe(CN)6] in order to form K2Co[Fe(CN)6] on a zeolite surface. Zeolites were characterized by an infrared and Raman Spectroscopy, SEM, and BET surface area measurement. Sorption experiments were conducted in a batch arrangement. The optimum pH for sorption and parameters of Langmuir isotherm were determined. The influence of accompanying monovalent and divalent cations on the sorption of caesium was observed.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the 6 th International Conference on Chemical Technology
ISBN
978-80-86238-77-7
ISSN
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e-ISSN
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Number of pages
6
Pages from-to
436-442
Publisher name
Česká společnost průmyslové chemie
Place of publication
Praha
Event location
Mikulov
Event date
Apr 16, 2018
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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