Mobasher, N., Kinoshita, H., Bernal, S.A. et al. (1 more author) (2014) Ba(OH)(2) - blast furnace slag composite binders for encapsulation of sulphate bearing nuclear waste. Advances in Applied Ceramics, 113 (8). pp. 460-465. ISSN 1743-6753
Abstract
The present study investigated the feasibility of the immobilisation of sulphate bearing radioactive wastes in blast furnace slag (BFS) based binders. BaSO4–BFS composites were produced via two methods using Na2SO4 as a waste simulant, along with Ba(OH)2 to promote precipitation of BaSO4 in an insoluble sulphate form and the consequent activation of the BFS. BaSO4 was effectively formed by both methods, and solid wasteforms were successfully produced. Although both methods produced BaSO4 embedded in the cement-like composites, different reaction products including ettringite and witherite were produced, depending on the order Ba(OH)2 was mixed with the system. These results show that the immobilisation of soluble sulphate-bearing aqueous wastes is achievable in Na2SO4–Ba(OH)2–BFS composites.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 Institute of Materials, Minerals and Mining. This is an author produced version of a paper subsequently published in Advances in Applied Ceramics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Barium hydroxide; Alkali-activated slag; Aodium sulphate; Nuclear wastes |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 25 Apr 2016 14:57 |
Last Modified: | 28 Apr 2016 04:54 |
Published Version: | http://dx.doi.org/10.1179/1743676114Y.0000000148 |
Status: | Published |
Publisher: | Taylor & Francis |
Refereed: | Yes |
Identification Number: | 10.1179/1743676114Y.0000000148 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:97727 |