Identification and formation of carbon-14 containing organic compounds during anoxic corrosion of activated steel in alkaline conditions

Wieland, Erich; Cvetković, Benjamin Z.; Kunz, Dominik; Salazar Quintero, Gary Abdiel; Szidat, Sönke (9 April 2017). Identification and formation of carbon-14 containing organic compounds during anoxic corrosion of activated steel in alkaline conditions. In: International High-Level Radioactive Waste Management Conference. Charlotte (NC), USA. 09.-13.04.2017.

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Carbon-14 is an important radionuclide in the inventory of radioactive waste. In Switzerland, the 14C inventory in a cement-based repository for low- and intermediate-level radioactive waste (L/ILW) is mainly associated with activated steel (~85 %). In light water reactors (LWR) 14C is the product of 14N activation in steel parts exposed to thermal neutron flux. 14C has been identified a key radionuclide in safety assessments. Release of 14C occurs due to slow corrosion of activated steel in the near field of a deep geological repository. While the 14C inventory is well known, the speciation of 14C upon release from activated steel is only poorly understood. The present study is aimed at investigating the formation of carbon species during the anoxic corrosion of iron and steel and determining the 14C species formed in a corrosion experiment with activated steel. The experiments were carried out in conditions similar to those anticipated in the near field of a cement-based repository.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Salazar Quintero, Gary Abdiel and Szidat, Sönke

Subjects:

500 Science > 540 Chemistry

Language:

English

Submitter:

Sönke Szidat

Date Deposited:

16 Apr 2018 12:31

Last Modified:

03 Nov 2019 04:53

BORIS DOI:

10.7892/boris.108863

URI:

https://boris.unibe.ch/id/eprint/108863

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