Thorpe, C.L. orcid.org/0000-0002-2860-8611, Crawford, R., Hand, R.J. orcid.org/0000-0002-5556-5821 et al. (9 more authors) (2024) Microbial interactions with phosphorus containing glasses representative of vitrified radioactive waste. Journal of Hazardous Materials, 462. 132667. ISSN 0304-3894
Abstract
The presence of phosphorus in borosilicate glass (at 0.1 – 1.3 mol% P2O5) and in iron-phosphate glass (at 53 mol% P2O5) stimulated the growth and metabolic activity of anaerobic bacteria in model systems. Dissolution of these phosphorus containing glasses was either inhibited or accelerated by microbial metabolic activity, depending on the solution chemistry and the glass composition. The breakdown of organic carbon to volatile fatty acids increased glass dissolution. The interaction of microbially reduced Fe(II) with phosphorus-containing glass under anoxic conditions decreased dissolution rates, whereas the interaction of Fe(III) with phosphorus-containing glass under oxic conditions increased glass dissolution. Phosphorus addition to borosilicate glasses did not significantly affect the microbial species present, however, the diversity of the microbial community was enhanced on the surface of the iron phosphate glass. Results demonstrate the potential for microbes to influence the geochemistry of radioactive waste disposal environments with implication for wasteform durability.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). |
Keywords: | Biodegradation; Nuclear waste; Radioactive Waste; Ferric Compounds; Phosphorus; Glass; Phosphates; Iron; Microbial Interactions |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/N017374/1 Engineering and Physical Sciences Research Council EP/G037140/1 ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL EP/S012400/1 Engineering and Physical Sciences Research Council EP/V035215/1 Engineering and Physical Sciences Research Council EP/T011424/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 08 Feb 2024 10:37 |
Last Modified: | 08 Feb 2024 10:37 |
Status: | Published |
Publisher: | Elsevier BV |
Refereed: | Yes |
Identification Number: | 10.1016/j.jhazmat.2023.132667 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:208719 |