• Home
  • Browse
    • Current Issue
    • By Issue
    • By Author
    • By Subject
    • Author Index
    • Keyword Index
  • Journal Info
    • About Journal
    • Aims and Scope
    • Editorial Board
    • Editorial Staff
    • Publication Ethics
    • Indexing and Abstracting
    • Related Links
    • FAQ
    • Peer Review Process
    • News
  • Guide for Authors
  • Submit Manuscript
  • Reviewers
  • Contact Us
 
  • Login
  • Register
Home Articles List Article Information
  • Save Records
  • |
  • Printable Version
  • |
  • Recommend
  • |
  • How to cite Export to
    RIS EndNote BibTeX APA MLA Harvard Vancouver
  • |
  • Share Share
    CiteULike Mendeley Facebook Google LinkedIn Twitter
Egyptian Journal of Radiation Sciences and Applications
Articles in Press
Current Issue
Journal Archive
Volume Volume 32 (2019)
Issue Issue 1
Volume Volume 31 (2018)
Volume Volume 30 (2017)
Volume Volume 29 (2016)
Volume Volume 28 (2015)
Volume Volume 27 (2014)
Volume Volume 26 (2013)
Volume Volume 25 (2012)
Volume Volume 24 (2011)
El-Naggar, M., Ali, M., El-Sadek, A., El-Said, H. (2019). Application of Metakaolin-slag Binders to Solidify Rad-waste Glass Sharps: Leaching of 137Cs and 152+154Eu Radionuclides. Egyptian Journal of Radiation Sciences and Applications, 32(1), 105-115. doi: 10.21608/ejrsa.2019.13301.1072
M. El-Naggar; M. Ali; A. El-Sadek; H. El-Said. "Application of Metakaolin-slag Binders to Solidify Rad-waste Glass Sharps: Leaching of 137Cs and 152+154Eu Radionuclides". Egyptian Journal of Radiation Sciences and Applications, 32, 1, 2019, 105-115. doi: 10.21608/ejrsa.2019.13301.1072
El-Naggar, M., Ali, M., El-Sadek, A., El-Said, H. (2019). 'Application of Metakaolin-slag Binders to Solidify Rad-waste Glass Sharps: Leaching of 137Cs and 152+154Eu Radionuclides', Egyptian Journal of Radiation Sciences and Applications, 32(1), pp. 105-115. doi: 10.21608/ejrsa.2019.13301.1072
El-Naggar, M., Ali, M., El-Sadek, A., El-Said, H. Application of Metakaolin-slag Binders to Solidify Rad-waste Glass Sharps: Leaching of 137Cs and 152+154Eu Radionuclides. Egyptian Journal of Radiation Sciences and Applications, 2019; 32(1): 105-115. doi: 10.21608/ejrsa.2019.13301.1072

Application of Metakaolin-slag Binders to Solidify Rad-waste Glass Sharps: Leaching of 137Cs and 152+154Eu Radionuclides

Article 10, Volume 32, Issue 1, Summer and Autumn 2019, Page 105-115  XML PDF (1.09 MB)
Document Type: Original Article
DOI: 10.21608/ejrsa.2019.13301.1072
Authors
M. El-Naggar email ; M. Ali; A. El-Sadek; H. El-Said
Hot Laboratories Center, Atomic Energy Authority (AEA), Cairo, Egypt
Abstract
METAKAOLIN (MK) and blast furnace slag (BFS) were utilized to design alkali activated binders suitable for solidification of waste glass (WG sharps contaminated with 137Cs and 152+154Eu radionuclides). Two forms of WG, powdered and fused, were utilized. Effects of WG forms and BFS addition on the ability of formulations to withstand compression were preliminary studied. When cold powdered WG was solidified the corresponding compressive strength (MPa) values were decreased by increasing the loading percentages. While fused forms were positively affected MPa values till 10.0% loading. Positive relations between BFS addition and MPa values were also detected. Leaching of 137Cs and 152+154Eu from MK-based formulations was followed as affected by WG forms, BFS addition and early age (2hr) curing temperatures. Both studied radionuclides were cumulatively leached in larger fractions from solidified powdered WG than from fused one. The obtained results reflected the ability of the designed formulations to retain 137Cs in greater extents than 152+154Eu. The lowest diffusion coefficient values (2.01×10-11 and 3.92×10-10cm2/s) were recorded when fused forms of WG containing 137Cs and 152+154Eu, respectively, were solidified into slag seeded MK-based formulations, early aged cured at 40°C. Slope values of log(CLF) vs. log(time) plots were < 0.35 indicating that the controlling leaching mechanisms for all studied leaching systems were predicted to be wash-off.
Keywords
Alkali activated binders; Non-combustible rad-waste; glass; 137Cs; 152+154Eu
Statistics
Article View: 97
PDF Download: 40
Home | Glossary | News | Aims and Scope | Sitemap
Top Top

Journal Management System. Designed by NotionWave.