Published May 2024 | Version v1
Journal article Metadata-only

Microwave sintering for rapid treatment of simulated Nd3+ and Sr2+ radioactive contaminated soil: exploring the influence of Nd:Sr mass ratio and mechanism

Creators

  • 1. Southwest University of Science and Technology, Mianyang (China). School of Environment and Resource
  • 2. Southwest University of Science and Technology, Mianyang (China). School of Mathematics and Physics
  • 3. Southwest University of Science and Technology, Mianyang (China). CAEA innovation center of nuclear environmental safety technology
  • 4. Southwest University of Science and Technology, Mianyang (China). School of Materials and Chemistry

Description

This study achieves the successful immobilization of simulated alpha- and beta-emitting radionuclides (Nd3+ and Sr2+, respectively) by incorporating them into a glass matrix through Nd2O3/SrSO4 (Nd/Sr). Varying mixture concentrations (5-30 wt% with mass ratios Nd:Sr varied from 10:1 to 1:10) in simulated radioactive soils were subjected to microwave sintering at 1500 °C for 0.5 h. Comprehensive assessments, including X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectra, scanning electron microscopy (SEM), and energy dispersive X-ray spectrometry (EDS), confirm the vitrification process's efficacy. The vitrified sample exhibits an amorphous structure, smooth surface, and homogeneously distributed elements, highlighting microwave sintering as a promising method for the effective disposal of radioactive-contaminated soil. (author)

Additional details

Publishing Information

Journal Title
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
333
Journal Issue
5
Journal Page Range
p. 2389-2402
ISSN
0236-5731
CODEN
JRNCDM

INIS

Country of Publication
Hungary
Country of Input or Organization
Hungary
INIS RN
55056907
Subject category
S54: ENVIRONMENTAL SCIENCES;
Descriptors DEI
NEODYMIUM IONS; RADIOACTIVITY; SINTERING; SOILS; STRONTIUM IONS; VITRIFICATION
Descriptors DEC
CHARGED PARTICLES; FABRICATION; IONS

Optional Information

Notes
45 refs.