Effect of Sulfate on Technetium/Rhenium Volatilization During Vitrification

PENG Lai-kang; NIU Chen-chen; ZHU Yong-chang; YANG De-bo; CUI Zhu; XU Kai

doi:10.7538/hhx.2023.45.01.0041

He huaxue yu fangshe huaxue (Feb 2023)

Effect of Sulfate on Technetium/Rhenium Volatilization During Vitrification

PENG Lai-kang,
NIU Chen-chen,
ZHU Yong-chang,
YANG De-bo,
CUI Zhu,
XU Kai

Affiliations

PENG Lai-kang: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
NIU Chen-chen: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology
ZHU Yong-chang: China Building Materials Academy
YANG De-bo: China Building Materials Academy
CUI Zhu: China Building Materials Academy
XU Kai: State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology

DOI: https://doi.org/10.7538/hhx.2023.45.01.0041
Journal volume & issue: Vol. 45, no. 1
pp. 41 – 47

Abstract

Read online

Sulfate is quite crucial to influence Tc/Re volatilization during nuclear liquid waste vitrification, but the mechanism of the effect is not yet clear. In this paper, the simplified SiO2-KReO4-K2SO4 system was used to study the effect of sulfate on Re volatilization during vitrification, and the heat-treated samples were characterized with XRD, TG-DSC and ICP-AES. The results show that sulfate hardly effects Re volatilization, when the mass ratio of Re to S ≥1.80; whereas, when the mass ratio of Re to S <1.80, sulfate promotes Re volatilization and reduces the Re volatilization temperature.

Published in He huaxue yu fangshe huaxue

ISSN: 0253-9950 (Print)
Publisher: Editorial Office of Journal of Nuclear and Radiochemistry
Country of publisher: China
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power; Technology: Chemical technology
Website: https://jnrc.xml-journal.net/

About the journal

Abstract

Keywords