CURRENT RESEARCH ON I-129 IMMOBILIZATION

机译：目前对I-129免疫的研究

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Radioactive~129 I has a half-life of 1.57x10~7 years and is produced in the nuclear fuel cycle.One method of conditioning ~129 I is to adsorb it from a gas stream heated at~200℃onto a AgNO_3- impregnated ceramic to form Ag ~129 I.A range of commercial porous AgNO_3-impregnated porous alumina and silica sorbents are available for this purpose.Once~129 I is incorporated as Ag ~129 I then the long term immobilization is a challenging problem because of the long half-life of ~129 I and its volatility during processing.In this paper we review the work carried out by various investigators in attempting to contain this Ag ~129 I and our current program.It covers the immobilization of AgI in glasses,ceramics and other matrices by sintering,hot pressing or hot isostatically pressing(HIPing).The volatilization of AgI above its melting point of~552℃entails that HIPing in a can is a very good option to produce a dense material.The matrix selected has to densify at low temperatures to prevent the AgI volatilization.The selection of the matrix,the HIPing temperature and the aqueous durability of the matrix will determine the best solution for the immobilization of ~129 I via AgNO_3-impregnated sorbents.

机译：放射性〜129 I的半衰期为1.57x10〜7年，是在核燃料循环中产生的。调节〜129 I的一种方法是将加热到200℃左右的气流吸附到浸渍有AgNO_3的陶瓷中为了形成Ag〜129 IA，可以使用一系列工业用多孔AgNO_3浸渍的多孔氧化铝和二氧化硅吸附剂。一旦〜129 I以Ag〜129 I的形式掺入，则由于长时间的半固定化，长期固定化是一个难题。〜129 I的寿命及其在加工过程中的挥发性。在本文中，我们回顾了各种研究人员为遏制这种〜129 I Ag和我们目前的程序所做的工作。它涵盖了将AgI固定在玻璃，陶瓷和其他基质中的方法。熔点高于552℃时，AgI的挥发使罐中的HIP成为生产致密材料的很好选择。所选择的基体必须在较低的温度下致密化防止A的温度gI挥发。基质的选择，HIPing温度和基质的水性耐久性将确定通过AgNO_3浸渍的吸附剂固定〜129 I的最佳溶液。

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《Waste management 2004 symposium (WM'04): waste management, energy security and a clean environment》|2004年|p.1-6|共6页
会议地点 Tucson AZ(US);Tucson AZ(US)
作者
D.S.Perera; E.R.Vance; R.L.Trautman; B.D.Begg;
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Australian Nuclear Science and Technology Organisation,Private Mail Bag 1,Menai,NSW 2234,Australia;

Australian Nuclear Science and Technology Organisation,Private Mail Bag 1,Menai,NSW 2234,Australia;

Australian Nuclear Science and Technology Organisation,Private Mail Bag 1,Menai,NSW 2234,Australia;

Australian Nuclear Science and Technology Organisation,Private Mail Bag 1,Menai,NSW 2234,Australia;

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原文格式 PDF
正文语种 eng
中图分类废物处理与综合利用;
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CURRENT RESEARCH ON I-129 IMMOBILIZATION

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