用于模拟废物固定化的玄武岩玻璃的结构与稳定性分析

Structure and stability analysis of basaltic glasses for the immobilization of simulated waste.

作者信息

Tong Qin, Liu Song, Liang Jun

机构信息

College of Intelligent Manufacturing, Mianyang Teachers' College, Mianyang, 621000, China.

Sichuan Jiuzhou Electric Group Co., Ltd, Mianyang, 621000, China.

出版信息

Sci Rep. 2025 Jul 23;15(1):26726. doi: 10.1038/s41598-025-12615-1.

DOI:10.1038/s41598-025-12615-1

PMID:40702250

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12287392/

Abstract

A power reactor in China was used as the subject, and based on the composition of its spent fuel, simulated waste basaltic glasses were prepared by the solid-state melting method. Among them, Ce/Ce, Nd and La are used to simulate Np/Np, Am and U in high-level nuclear waste (HLW), respectively. The structure, thermal stability and leaching characteristics of basaltic glasses with different contents of simulated waste were investigated. The XRD/SEM-EDX/Raman results revealed that the loading of simulated waste in basaltic glass reached ~ 25 wt%, and NiFeO crystals precipitated when the simulated waste content reached 25 wt%. When the content of simulated waste reached 40 wt%, a small amount of yellow material precipitated from the upper surface of the sample. The DSC and ASTM standard MCC-1 results indicated that all the samples had good thermal stability and leaching resistance.

摘要

以中国的一座动力反应堆为研究对象，根据其乏燃料的成分，采用固态熔融法制备了模拟废玄武岩玻璃。其中，分别用Ce/Ce、Nd和La模拟高放核废料（HLW）中的Np/Np、Am和U。研究了不同模拟废料含量的玄武岩玻璃的结构、热稳定性和浸出特性。XRD/SEM-EDX/Raman结果表明，玄武岩玻璃中模拟废料的负载量达到约25 wt%，当模拟废料含量达到25 wt%时会析出NiFeO晶体。当模拟废料含量达到40 wt%时，样品上表面有少量黄色物质析出。DSC和ASTM标准MCC-1结果表明，所有样品均具有良好的热稳定性和抗浸出性。