摘要
放射性废离子交换树脂是核设施产生的主要中低放废物之一。本文研究了阳、阴及混合树脂在H_2O_2-Ni ̄(2+)/Cu ̄(2+)和H_2O_2-Mn ̄(2+)/Cu ̄(2+)及H_2O_2-Fe ̄(2+)/Cu ̄(2+)和H_2O_2-Cu ̄(2+)体系中的氧化分解行为,分析了过氧化氢用量、金属离子催化剂、温度、pH、NaOH用量等对反应进程和结果的影响,研究了水泥固化效果与分解残余物量之间的关系,找出了不影响水泥固化的分解残液COD上限值,并对树脂过氧化氢湿法催化氧化的机理进行了初步探讨。通过对废树脂的过氧化氢湿法催化氧化工艺的进一步探索和改进,为今后台架实验提供工艺参数和设备设计依据。
Spent radioactive ion-exchange resin (IER)is one of the main kinds of wastesproduced by nuclear installions. This paper describex the study on decomposition behaviors ofcationic,anionic and mixed IER in H_2O_2-Ni ̄(2+)/Cu ̄(2+),H_2O_2-Mn ̄(2)/Cu ̄(2+),H_2O_2-Fe ̄(2+)/Cu ̄(2+) andH_2O_2-Cu ̄(2+) systems,analyzes the effects on reaction process and consequence of many factorsstich as amount of H_2O_2,catalyst,temperature,pH-value, NaOH and so on. The relation be-tween cementation process and the amount of decomposition residuals was studied. It provid-ed the possible maximum COD-value under which the solidification process would not be affected.The reaction mechnism of the wet chemical oxidation of IER was discussed preliminarlly.
出处
《辐射防护》
CAS
CSCD
北大核心
1995年第3期203-210,共8页
Radiation Protection
关键词
催化氧化
过氧化氢
固化
废离子交换树脂
减容
Spent Radioactlve lon-Exchange Resin,Metal Ion Cataly,Wet Catalysis Oxidation,Solidi-fication,Volume Reductlon