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Surface and bacterial reduction of nitrate at alkaline pH: Conditions comparable to a nuclear waste repository

Rafrafi, Yan and Ranaivomanana, Harifidy and Bertron, Alexandra and Albrecht, Achim and Erable, Benjamin Surface and bacterial reduction of nitrate at alkaline pH: Conditions comparable to a nuclear waste repository. (2015) International Biodeterioration & Biodegradation, vol. 101. pp. 12-22. ISSN 0964-8305

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Official URL: http://dx.doi.org/10.1016/j.ibiod.2015.03.013

Abstract

This study investigates the reactivity of nitrates in abiotic and biotic conditions at alkaline pH in the context of a repository for long-lived inter-mediate-level radioactive waste. The work, carried out under environmental conditions comparable to those prevailing in the repository: alkaline pH, no oxygen, solid materials (cementitious material, steel), aims to identify the by-products of the nitrate reduction and to evaluate reaction kinetics of these reactions with and without the presence of denitrifying microorganisms. This paper demonstrates that, even at the high pH characteristic of nuclear waste repositories, nitrate reduction may be a likely scenario, with biotic catalysis in the presence of microorganisms and surface catalysis in the presence of steel and/or corrosion products.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at International Biodeterioration & Biodegradation website : http://www.sciencedirect.com/science/article/pii/S0964830515000876
HAL Id:hal-01150718
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Agence Nationale pour la Gestion des Déchets Radioactifs - ANDRA (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Laboratory name:
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Deposited By: Benjamin ERABLE
Deposited On:11 May 2015 15:26

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