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Abstract <p>Britholite, a Ca-REE silicate sample with an apatite structure, a potential matrix for isolation of the REE-actinide fraction of wastes from spent nuclear fuel processing, is produced by cold crucible induction melting. Britholite has a simple composition, high capacity for actinides, and is stable in heated aqueous solutions. For the first time, the leaching rates of Nd in water and brine at 200–250°C are determined to be 10<sup>–3</sup>–10<sup>–5</sup> g/(m<sup>2</sup> day).</p>

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Britholite-Based Matrix for Actinides Isolation

  • 期刊论文

  • 发表日期：

    2025年7月4日

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  • I. M. Melnikova,
  • S. V. Yudintsev

摘要

Abstract

Britholite, a Ca-REE silicate sample with an apatite structure, a potential matrix for isolation of the REE-actinide fraction of wastes from spent nuclear fuel processing, is produced by cold crucible induction melting. Britholite has a simple composition, high capacity for actinides, and is stable in heated aqueous solutions. For the first time, the leaching rates of Nd in water and brine at 200–250°C are determined to be 10–3–10–5 g/(m2 day).