This paper describes a first-of-a-kind study where lead tellurite (Pb-Te-O), iron phosphate (Fe-P-O), and lanthanide aluminoborosilicate (LABS) glass waste forms were evaluated for treating and/or immobilizing waste streams containing high rare-earth (RE) content in different forms, e.g., RECl₃, REOCl, and/or REO_x. Results from this study show that NdOCl can be immobilized in 78TeO₂-22PbO glass at up to 10 mass%. Higher loadings of up to 15 mass% were demonstrated, but with a small fraction of crystallization. Two Fe-P-O glasses produced from either RECl₃ (RE = Nd,Ce) or NdOCl revealed products with very similar properties, demonstrating that the phosphate process can be used to dechlorinate a variety of RE-containing halide-based waste streams. The LABS glasses produced from Nd₂O₃ or NdOCl showed similar properties, but the LABS-NdOCl glass did have some residual Cl present. Characterization is provided for all waste forms including chemical analysis, X-ray diffraction, and bulk density.

本文介绍了一项首创的研究，其中评估了碲化铅（Pb-Te-O），磷酸铁（Fe-PO）和镧系元素铝硼硅酸盐（LABS）玻璃废物的形态，以处理和/或固定废物流含有不同形式的高稀土（RE）含量，例如RECl ₃，REOC1和/或REO _x。该研究的结果表明，NdOCl可以以不超过10质量％的比例固定在78TeO ₂ -22PbO玻璃中。证实了高达15质量％的较高负载，但是结晶的比例很小。用任一RECl ₃制成的两个Fe-PO玻璃（RE = Nd，Ce）或NdOCl揭示的产品具有非常相似的特性，表明磷酸盐工艺可用于对多种含RE的卤化物基废物流进行脱氯。由Nd ₂ O ₃或NdOCl生产的LABS玻璃显示出相似的性能，但是LABS-NdOCl玻璃确实存在一些残留的Cl。提供了所有废物形式的特征，包括化学分析，X射线衍射和堆积密度。