Thorpe, C.L., Mann, C., Fisher, A. et al. (9 more authors) (2018) Evaluation of novel leaching assessment for nuclear waste glasses. In: 44th Annual Waste Management Conference (WM2018) : Nuclear and Industrial Robotics, Remote Systems and Other Emerging Technology. 44th Annual Waste Management Conference (WM2018), 18-22 Mar 2018, Phoenix, Arizona, USA. Waste Management Symposia, Inc. , pp. 3317-3323. ISBN 9781510867642
Abstract
The applicability of the Environment Protection Agency (EPA) leaching protocol, EPA 1313, to low activity waste from the Hanford site (USA), immobilized in a glass matrix, is evaluated. The protocol, established for industrial wastes, soils, sludges, construction materials and mining wastes, measures the release of elemental constituents as a function of pH. We present the results of an assessment of the effects of particle size, sample mass and solution pH on the leachability of the Immobilized Low Activity Waste (ILAW) simulant glass, LAW-A44, in an attempt to validate the EPA 1313 protocol for use on glass materials. Several amendments are proposed, including defining an upper and lower limit for particle size and performing experiments in solutions buffered to the desired pH. The ultimate goal of this research is to establish a new glass leachability assessment for disposal of ILAW glass in the Integrated Disposal Facility at Hanford, which does not constrain the glass formulation, unlike the current leaching protocols, that are not reflective of the conditions of disposal.
Metadata
Item Type: | Proceedings Paper |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © (2018) by Waste Management Symposia, Inc. |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Materials Science and Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 Mar 2021 14:31 |
Last Modified: | 03 Mar 2021 14:31 |
Status: | Published |
Publisher: | Waste Management Symposia, Inc. |
Refereed: | Yes |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:171428 |