Highly effective sustainable membrane based cyanobacteria for uranium uptake from aqueous environment

Smječanin, N., Nuhanović, M., Sulejmanović, J., Mašić, E. and Sher, F. ORCID: 0000-0003-2890-5912, 2023. Highly effective sustainable membrane based cyanobacteria for uranium uptake from aqueous environment. Chemosphere, 313: 137488. ISSN 0045-6535

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Abstract

Wastewater from industrial process of uranium ore mining contains a large amount of this radioactive pollutant. Regarding the advantages of biosorption, it was found that varieties of biomasses such as agricultural waste, algae and fungi are effective for uranium removal. However, there is limited research on cyanobacteria, therefore, cyanobacteria, Anagnostidinema amphibium (CAA) was investigated by batch method for the first time for biosorption of uranium (VI). Optimization of biosorption parameters showed that maximum removal efficiency of 92.91% was reached at pH range of 9–11 with 50 mg of cyanobacteria to 100 mg/L U(VI) initial concentration, at 25 °C within 40 min. Used biosorbent exhibited very good selectivity for U(VI) ions and reusability in IV sorption/desorption cycles. Characterization of CAA surface was performed by FTIR, EDS, EDXRF and SEM analysis and it has shown various functional groups (CONH, COOH, OH, PO alkyl group) and that it is very rich in elements such as iron, potassium and calcium. In binary systems, contained of U(VI) and selected ions, CAA exhibits very good selectivity towards U(VI) ions. Kinetic data revealed the best accordance of experimental data with the pseudo-second-order model and isotherms data agreed with Freundlich model. Thermodynamic data implied that U(VI) biosorption process by A. amphibium exhibited spontaneity and modelling of the investigated process showed that the adsorption of uranium ions occurs mainly via peptidoglycan carboxyl groups. Overall results show that these cyanobacteria with a maximum sorption capacity of 324.94 mg/g have great potential for the processing of wastewater polluted with uranium (VI).

Item Type:	Journal article
Publication Title:	Chemosphere
Creators:	Smječanin, N., Nuhanović, M., Sulejmanović, J., Mašić, E. and Sher, F.
Publisher:	Elsevier BV
Date:	February 2023
Volume:	313
ISSN:	0045-6535
Identifiers:	Number Type 10.1016/j.chemosphere.2022.137488 DOI 1645654 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Jeremy Silvester
Date Added:	03 Feb 2023 16:50
Last Modified:	03 Feb 2023 16:50
URI:	https://irep.ntu.ac.uk/id/eprint/48168

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