Nanofiltration Purification of Liquid Radioactive Waste

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2023-12-11 DOI:10.1134/s1066362223050053

V. O. Kaptakov, V. V. Milyutin

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引用次数: 0

Abstract

The paper presents the results of testing the purification of real liquid radioactive waste from radionuclides, bottom residues of the Kola and Beloyarsk nuclear power plants (NPP), as well as low-level wastewater from the radiochemical building of the Institute of Physical Chemistry and Electrochemistry RAS (IPCE RAS) using the method of nanofiltration (NF) using a polymer membrane manufactured by the Russian company “RM Nanotech.” It has been shown that in the case of single-stage NF purification of bottoms of the Kola NPP, the coefficient of purification from ⁶⁰Co is 2.8, while no purification from ¹³⁷Cs practically occurs. When cleaning the bottom residues of the Beloyarsk NPP from ⁶⁰Co using a five-stage scheme, a coefficient of purification from ⁶⁰Co equal to 388 was obtained. The combination of nanofiltration purification and selective sorption of cesium on the ferrocyanide sorbent Temoksid-35 makes it possible to obtain a dry salt residue that is not related to radioactive waste. When using the method of nanofiltration for the treatment of low-level wastewater of the Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, the degree of purification was, %: ¹³⁷Сs ~ 75; ⁹⁰Sr ~ 91; ²⁴¹Am ~ 99.5; ¹⁵²Eu ~ 91; ²³⁹Pu ~ 99.5.

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纳滤净化液体放射性废物

摘要本文介绍了使用俄罗斯 "RM Nanotech "公司生产的聚合物膜，采用纳滤（NF）方法对实际液体放射性废物、科拉和别洛雅尔斯克核电站（NPP）底部残留物以及俄罗斯科学院物理化学和电化学研究所（IPCE RAS）放射化学大楼低浓度废水进行放射性核素净化的测试结果。研究表明，在对科拉核电站底部进行单级纳滤净化时，60Co 的净化系数为 2.8，而 137Cs 几乎没有净化。在采用五级方案净化贝洛亚尔斯克核电厂底部残留物中的 60Co 时，60Co 的净化系数为 388。纳滤净化和铁氰化物吸附剂 Temoksid-35 对铯的选择性吸附相结合，可以获得与放射性废物无关的干盐残留物。俄罗斯科学院物理化学和电化学研究所使用纳滤方法处理低浓度废水时，净化程度为：137Сs ~ 75；90Sr ~ 91；241Am ~ 99.5；152Eu ~ 91；239Pu ~ 99.5。

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来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.

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