Oxidation kinetics of spent low-level radioactive resins

Y. J. Huang, H. Paul Wang, Chih C. Chao, H. H. Liu, M. C. Hsiao, S. H. Liu

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)


Experimentally, two-stage oxidation of spent low-level radioactive resin was found by thermo-gravimetric analysis (TGA). About 24% of the spent resins was oxidized at 600 to 900 K. Online Fourier transform infrared spectra showed that the decomposition of the -SO3H species in the resin to SO 2 occurred at 670 and 1020 K. The numerical calculation from TGA weight loss data at different heating rates showed that the global activation energies for oxidation of the spent resins were 108 to 138 kJ·mol -1. The reaction orders for resin and oxygen were about 1.0 and 3.5, respectively. The global rate equations for oxidation of the resin in the first and second stages can be expressed as dx1/dt (s-1 ) = 2.3 × 107 (s-1)exp[-117900(J·mol -1)/T(K)][1 - x (%)]0.82 [O2 (vt%)] 3.5 (x denotes the reaction conversion) and dx2/dt = 8.4 × 1017exp(-239500/RT) (1 - x)0-9[O2] 4.5,respectively.

頁(從 - 到)355-360
期刊Nuclear Science and Engineering
出版狀態Published - 2005 11月

All Science Journal Classification (ASJC) codes

  • 核能與工程


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