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- Norrfors, K. KarinKTH,Tillämpad fysikalisk kemi (author)
γ-radiation induced corrosion of copper in bentonite-water systems under anaerobic conditions
- Article/chapterEnglish2018
Publisher, publication year, extent ...
- Elsevier Ltd,2018
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:kth-223137
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-223137URI
- https://doi.org/10.1016/j.radphyschem.2017.11.004DOI
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- Language:English
- Summary in:English
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- Export Date: 13 February 2018; Article; CODEN: RPCHD; Correspondence Address: Jonsson, M.; School of Chemical Science and Engineering, Applied Physical Chemistry, KTH Royal Institute of TechnologySweden; email: matsj@kth.se; Funding details: SKB, Svensk Kärnbränslehantering. QC 20180326
- In this work we have experimentally studied the impact of bentonite clay on the process of radiation-induced copper corrosion in anoxic water. The motivation for this is to further develop our understanding of radiation-driven processes occurring in deep geological repositories for spent nuclear fuel where copper canisters containing the spent nuclear fuel will be embedded in compacted bentonite. Experiments on radiation-induced corrosion in the presence and absence of bentonite were performed along with experiments elucidating the impact irradiation on the Cu2+ adsorption capacity of bentonite. The experiments presented in this work show that the presence of bentonite clay has no or very little effect on the magnitude of radiation-induced corrosion of copper in anoxic aqueous systems. The absence of a protective effect similar to that observed for radiation-induced dissolution of UO2 is attributed to differences in the corrosion mechanism. This provides further support for the previously proposed mechanism where the hydroxyl radical is the key radiolytic oxidant responsible for the corrosion of copper. The radiation effect on the bentonite sorption capacity of Cu2+ (reduced capacity) is in line with what has previously been reported for other cations. The reduced cation sorption capacity is partly attributed to a loss of Al-OH sites upon irradiation.
Subject headings and genre
- NATURVETENSKAP Kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences hsv//eng
- Aluminum compounds
- Anoxic sediments
- Copper
- Copper corrosion
- Corrosion
- Irradiation
- Positive ions
- Radiation
- Adsorption capacities
- Anaerobic conditions
- Compacted bentonite
- Corrosion mechanisms
- Deep geological repository
- Protective effects
- Sorption capacities
- Spent nuclear fuels
- Bentonite
- hydroxyl radical
- nuclear fuel
- adsorption kinetics
- anaerobic capacity
- Article
- embedding
- environmental impact assessment
- gamma radiation
- water supply
Added entries (persons, corporate bodies, meetings, titles ...)
- Björkbacka, ÅsaKTH,Tillämpad fysikalisk kemi(Swepub:kth)u1igr31w (author)
- Kessler, AmandaKTH,Tillämpad fysikalisk kemi(Swepub:kth)u19qddr7 (author)
- Wold, SusannaKTH,Tillämpad fysikalisk kemi(Swepub:kth)u11y1fb9 (author)
- Jonsson, Mats,1967-KTH,Tillämpad fysikalisk kemi(Swepub:kth)u11mc94v (author)
- KTHTillämpad fysikalisk kemi (creator_code:org_t)
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- In:Radiation Physics and Chemistry: Elsevier Ltd144, s. 8-120969-806X1879-0895
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