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Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste

Miguel A. Ruiz-Fresneda, Margarita Lopez-Fernandez, Marcos F. Martinez-Moreno, Andrea Cherkouk, Yon Ju-Nam Orcid Logo, Jesus Ojeda Ledo Orcid Logo, Henry Moll, Mohamed L. Merroun

Environmental Science & Technology, Volume: 54, Issue: 23, Pages: 15180 - 15190

Swansea University Authors: Yon Ju-Nam Orcid Logo, Jesus Ojeda Ledo Orcid Logo

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DOI (Published version): 10.1021/acs.est.0c02418

Abstract

Microbial communities occurring in reference materials for artificial barriers (e.g. bentonites) in future deep geological repositories of radioactive waste can influence the migration behavior of radionuclides such as curium (CmIII). This study investigates the molecular interactions between CmIII...

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Published in: Environmental Science & Technology
ISSN: 0013-936X 1520-5851
Published: American Chemical Society (ACS) 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa55614
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spelling 2021-12-01T16:16:47.9897232 v2 55614 2020-11-06 Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste b219fdfea246d96dfc9c4eecfd60f2a6 0000-0003-2972-8073 Yon Ju-Nam Yon Ju-Nam true false 4c1c9800dffa623353dff0ab1271be64 0000-0002-2046-1010 Jesus Ojeda Ledo Jesus Ojeda Ledo true false 2020-11-06 CHEG Microbial communities occurring in reference materials for artificial barriers (e.g. bentonites) in future deep geological repositories of radioactive waste can influence the migration behavior of radionuclides such as curium (CmIII). This study investigates the molecular interactions between CmIII and its inactive analogue europium (EuIII) with the indigenous bentonite bacterium Stenotrophomonas bentonitica at environmentally relevant concentrations. Potentiometric studies showed a remarkable high concentration of phosphates at the bacterial cell wall compared to other bacteria, revealing the great potential of S. bentonitica for metal binding. Infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed the role of phosphates and carboxylate groups from the cell envelope in the bioassociation of EuIII. Additionally, time-resolved laser-induced fluorescence spectroscopy (TRLFS) identified phosphoryl and carboxyl groups from bacterial envelopes, among other released complexing agents, to be involved in the EuIII and CmIII coordination. The ability of this bacteria to form a biofilm at the surface of bentonites allow them to immobilize trivalent lanthanide and actinides in the environment. Journal Article Environmental Science & Technology 54 23 15180 15190 American Chemical Society (ACS) 0013-936X 1520-5851 europium; curium; bacterial speciation; mobility; geodisposal 1 12 2020 2020-12-01 10.1021/acs.est.0c02418 COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2021-12-01T16:16:47.9897232 2020-11-06T14:07:28.1986245 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Miguel A. Ruiz-Fresneda 1 Margarita Lopez-Fernandez 2 Marcos F. Martinez-Moreno 3 Andrea Cherkouk 4 Yon Ju-Nam 0000-0003-2972-8073 5 Jesus Ojeda Ledo 0000-0002-2046-1010 6 Henry Moll 7 Mohamed L. Merroun 8 55614__18784__7fa919821652472483190d604b396ce1.pdf 55614.pdf 2020-12-02T09:34:33.4697046 Output 1058615 application/pdf Accepted Manuscript true 2021-11-13T00:00:00.0000000 true eng 66 Rebecca Kelleher 0000-0002-6791-2886 R.Kelleher@Swansea.ac.uk true true
title Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
spellingShingle Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
Yon Ju-Nam
Jesus Ojeda Ledo
title_short Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
title_full Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
title_fullStr Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
title_full_unstemmed Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
title_sort Molecular Binding of EuIII/CmIII by Stenotrophomonas bentonitica and Its Impact on the Safety of Future Geodisposal of Radioactive Waste
author_id_str_mv b219fdfea246d96dfc9c4eecfd60f2a6
4c1c9800dffa623353dff0ab1271be64
author_id_fullname_str_mv b219fdfea246d96dfc9c4eecfd60f2a6_***_Yon Ju-Nam
4c1c9800dffa623353dff0ab1271be64_***_Jesus Ojeda Ledo
author Yon Ju-Nam
Jesus Ojeda Ledo
author2 Miguel A. Ruiz-Fresneda
Margarita Lopez-Fernandez
Marcos F. Martinez-Moreno
Andrea Cherkouk
Yon Ju-Nam
Jesus Ojeda Ledo
Henry Moll
Mohamed L. Merroun
format Journal article
container_title Environmental Science & Technology
container_volume 54
container_issue 23
container_start_page 15180
publishDate 2020
institution Swansea University
issn 0013-936X
1520-5851
doi_str_mv 10.1021/acs.est.0c02418
publisher American Chemical Society (ACS)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
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description Microbial communities occurring in reference materials for artificial barriers (e.g. bentonites) in future deep geological repositories of radioactive waste can influence the migration behavior of radionuclides such as curium (CmIII). This study investigates the molecular interactions between CmIII and its inactive analogue europium (EuIII) with the indigenous bentonite bacterium Stenotrophomonas bentonitica at environmentally relevant concentrations. Potentiometric studies showed a remarkable high concentration of phosphates at the bacterial cell wall compared to other bacteria, revealing the great potential of S. bentonitica for metal binding. Infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed the role of phosphates and carboxylate groups from the cell envelope in the bioassociation of EuIII. Additionally, time-resolved laser-induced fluorescence spectroscopy (TRLFS) identified phosphoryl and carboxyl groups from bacterial envelopes, among other released complexing agents, to be involved in the EuIII and CmIII coordination. The ability of this bacteria to form a biofilm at the surface of bentonites allow them to immobilize trivalent lanthanide and actinides in the environment.
published_date 2020-12-01T04:09:57Z
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score 11.016235

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