Sintering Bi2O3–B2O3–ZnO ternary low temperature glass by hydration device to solidify iodine containing silver-coated silica gel-Reference-Cited by-同舟云学术

Sintering Bi2O3–B2O3–ZnO ternary low temperature glass by hydration device to solidify iodine containing silver-coated silica gel

Published:2021-12-31 Issue:0 Volume:0 Page:
ISSN:0033-8230
Container-title:Radiochimica Acta
language:en
Short-container-title:

Author:

Han Wenhong¹,Wei Guilin²,Liu Yi³,Lu Xirui¹²⁴,Chen Shunzhang⁵,Zhang Zhentao³,Xie Yi⁶⁷,Shu Xiaoyan²⁴

Affiliation:

1. State Key Laboratory of Environmental-friendly Energy Materials, Southwest University of Science and Technology , Mianyang Sichuan 621010 , P. R. China

2. Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology , Mianyang Sichuan 621010 , P. R. China

3. China Institute of Atomic Energy , Beijing 102413 , P. R. China

4. National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology , Mianyang Sichuan 621010 , P. R. China

5. Key Laboratory of Radiation Physics and Technology, Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University , Chengdu 610064 , P. R. China

6. University of Science and Technology of China , Hefei 230026 , P. R. China

7. CAS Key Laboratory of Photovoltaic and Energy Conservation Materials, Institute of Plasma Physics, Chinese Academy of Sciences , P.O. Box 1126 , Hefei 230031 , P. R. China

Abstract

Abstract A new glass solidification process aims at radioactive iodine waste was explored in order to reduce the possible harm to environment. Samples with different iodine content in silver-coated silica gel were pretreated by hydration device at 300 °C and then sintered at relatively low temperatures (500, 550 and 600 °C). XRD results show that AgI is mainly chemically fixed in the glass network with some AgI particles being physically wrapped by the glass. Moreover, as the sintering temperature reached to 550 °C, B element crystallized. SEM-EDS results show that Ag and I elements are enriched, while the other elements are evenly distributed. AFM results showed that the sample surface becomes rougher as the iodine content increases in the silver coated silica gel. The FT-IR results show that the structure of the sintered sample is mainly composed of [BiO3], [BiO6] and [BO3]. This study provides a new sintering method by hydration device for the treatment of radioactive iodine waste.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/ract-2021-1032/pdf

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