Experimental and numerical investigations of 99TcO4 diffusion in compacted SPV 200 bentonite

Yu Hung Shih, I. Hsien Lee, Chuen Fa Ni, Tsuey Lin Tsai, Liang Cheng Chen, Chuan Pin Lee, Shih Chin Tsai, Te Yen Su

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Diffusion characteristics in bentonite are essential to quantify the transport of radionuclides through buffer/backfill materials in waste repositories. This study employs through-diffusion techniques to investigate the diffusion behavior of 99TcO4 through SPV bentonite with various densities. The apparent diffusion coefficients for bentonite densities are estimated using Marquardt–Levenberg optimization algorithm in the HYDRUS-1D model. Based on the experimental and calculation results, 99Tc could be considered as non-sorbing radionuclides. The data obtained in this study provide a valuable reference for the safety assessment of waste repositories.

Original languageEnglish
Pages (from-to)1081-1089
Number of pages9
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number3
StatePublished - 1 Jun 2018


  • Apparent diffusion coefficient (D)
  • Distribution coefficient (K)
  • SPV bentonite
  • Through diffusion


Dive into the research topics of 'Experimental and numerical investigations of 99TcO4 diffusion in compacted SPV 200 bentonite'. Together they form a unique fingerprint.

Cite this