Gallium and germanium static and kinetic sorption and desorption studies on cerium dioxide nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F23%3A00369246" target="_blank" >RIV/68407700:21340/23:00369246 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s42452-023-05561-y" target="_blank" >https://doi.org/10.1007/s42452-023-05561-y</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s42452-023-05561-y" target="_blank" >10.1007/s42452-023-05561-y</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Gallium and germanium static and kinetic sorption and desorption studies on cerium dioxide nanoparticles

Popis výsledku v původním jazyce

Positron-emitting 68Ga has become an integral part of nuclear medicine. It is a radionuclide obtained from 68Ge/68Ga radionuclide generators. Apart from other qualities, it is a feature that have caused its growing popularity in medical practice. Nevertheless, the increasing demand for 68Ga supply results in the need of new and improved separation systems to obtain it. Hydrous oxides such as titanium or zirconium dioxide are usually the preferred separation materials, but other oxidic materials are under study. Thorough testing of the sorption behaviour is often overlooked in these studies, though it is indispensable for the applicability and suitability assessment. This work is focused on the sorption behaviour description of cerium dioxide prepared by calcination of ceric nitrate. Both batch and kinetic sorption experiments were conducted. Such a thorough study has never been carried out for this material. In batch experiments, the optimal conditions for separation of 68Ga and 68Ge were found. Kinetic experimental data were used for mathematical modelling. Six kinetic models derived from various rate-controlling processes were used and their applicability was demonstrated. The diffusion in an inert layer is the rate-controlling process of both gallium and germanium sorption and desorption. This model description of sorption kinetics will further enable us to optimise the sorption and desorption processes numerically. Thus far, it was found out that the prepared cerium dioxide can quantitatively adsorb germanium in very short time of 10 min from 1mM hydrochloric acid and the most convenient medium for 68Ge and 68Ga separation is 0.1 M hydrochloric acid.

Název v anglickém jazyce

Gallium and germanium static and kinetic sorption and desorption studies on cerium dioxide nanoparticles

Popis výsledku anglicky

Positron-emitting 68Ga has become an integral part of nuclear medicine. It is a radionuclide obtained from 68Ge/68Ga radionuclide generators. Apart from other qualities, it is a feature that have caused its growing popularity in medical practice. Nevertheless, the increasing demand for 68Ga supply results in the need of new and improved separation systems to obtain it. Hydrous oxides such as titanium or zirconium dioxide are usually the preferred separation materials, but other oxidic materials are under study. Thorough testing of the sorption behaviour is often overlooked in these studies, though it is indispensable for the applicability and suitability assessment. This work is focused on the sorption behaviour description of cerium dioxide prepared by calcination of ceric nitrate. Both batch and kinetic sorption experiments were conducted. Such a thorough study has never been carried out for this material. In batch experiments, the optimal conditions for separation of 68Ga and 68Ge were found. Kinetic experimental data were used for mathematical modelling. Six kinetic models derived from various rate-controlling processes were used and their applicability was demonstrated. The diffusion in an inert layer is the rate-controlling process of both gallium and germanium sorption and desorption. This model description of sorption kinetics will further enable us to optimise the sorption and desorption processes numerically. Thus far, it was found out that the prepared cerium dioxide can quantitatively adsorb germanium in very short time of 10 min from 1mM hydrochloric acid and the most convenient medium for 68Ge and 68Ga separation is 0.1 M hydrochloric acid.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/TJ01000334" target="_blank" >TJ01000334: Nové kompozitní materiály pro separaci medicinálních radionuklidů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SN Applied Sciences

ISSN

2523-3971

e-ISSN

2523-3971

Svazek periodika

2023

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

001101837500003

EID výsledku v databázi Scopus

2-s2.0-85175978366