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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Radioanalytical and Nuclear Chemistry

ISSN

0236-5731

e-ISSN

1588-2780

Svazek periodika

334

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

6849-6862

Kód UT WoS článku

001490496600001

EID výsledku v databázi Scopus

2-s2.0-105005522973