ISSN: 0256-1115 (print version) ISSN: 1975-7220 (electronic version)
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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received April 12, 2023
Accepted January 1, 2024
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Most Cited

The Copper-Assisted Dissolution of Magnetite in Hydrazine-Based Inorganic Solution

Decontamination and Decommissioning Division , KAERI 1Quantum Energy Chemical Engineering , University of Science and Technology (UST)
nwkchoi@kaeri.re.kr
Korean Journal of Chemical Engineering, June 2024, 41(6), 1715-1723(9), 10.1007/s11814-024-00012-9

Abstract

A protective oxide layer forms on the material surfaces of a nuclear power plant during operation due to high temperature.

This study addresses the challenge of developing eff ective chemical decontamination technology for domestic CANDUtype

reactors, specifi cally focusing on the pressurized heavy water reactor (PHWR) system. The Korea Atomic Energy

Research Institute has previously introduced the ‘HyBRID’ (hydrazine-based reductive metal ion decontamination) process

for pressurized water reactors, which notably omits the use of organic acids or chelating agents. To adapt and enhance this

technology for PHWR systems, we investigated the role of copper (Cu) in the dissolution of magnetite, a prominent oxide

layer in nuclear power plants. Our fi ndings reveal that the redox cycle of copper in conjunction with hydrazine and magnetite

demonstrates a notably eff ective dissolution behavior. This study presents a crucial step toward optimizing decontamination

procedures in nuclear reactors.

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