Investigation of the adsorptive properties of filamentous fungus Aspergillus niger in the removal of 85 Sr and 99m Tc from aqueous solutions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00385818" target="_blank" >RIV/68407700:21340/25:00385818 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s10967-025-10120-3" target="_blank" >https://doi.org/10.1007/s10967-025-10120-3</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10967-025-10120-3" target="_blank" >10.1007/s10967-025-10120-3</a>

Result language
angličtina
Original language name
Investigation of the adsorptive properties of filamentous fungus Aspergillus niger in the removal of 85 Sr and 99m Tc from aqueous solutions
Original language description
This study investigates the adsorptive properties of the filamentous fungus Aspergillus niger in both isolated and lyophilizedforms for the removal of 85Sr and 99mTc from aqueous solutions. The adsorption process was evaluated across a range ofpH values and contact times, with a focus on understanding the kinetic behavior and efficiency of each form. For 85Sr, bothforms of Aspergillus niger exhibited pH-dependent adsorption, with optimal removal efficiency occurring between pH 4and 8. Adsorption equilibrium was achieved within 120 min, with the pseudo-second-order kinetic model providing thebest fit, suggesting a chemisorption mechanism. Maximum adsorption for the lyophilized form was 68.2% at pH 4, whilethe isolated form reached 66.4% at pH 8. In contrast, 99mTc adsorption was minimal across all pH levels, with less than 10%adsorption observed, indicating poor affinity for the anionic pertechnetate species. The study highlights the effectiveness ofAspergillus niger in removing 85Sr from contaminated water, while also addressing its limitations in adsorbing 99mTc. Thesefindings contribute to the understanding of biosorption mechanisms for radionuclide removal in environmental applications.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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