Low Corrosive Chemical Decontamination Method Using pH Control, (I). Basic System.
- 1 January 2001
- journal article
- Published by Taylor & Francis in Journal of Nuclear Science and Technology
- Vol. 38 (12), 1090-1096
- https://doi.org/10.3327/jnst.38.1090
Abstract
A new low corrosive decontamination method was developed which uses both oxalic acid and hydrazine as the reducing agent and potassium permanganate as the oxidizing agent. Less corrosion of structural materials during the decontamination is realized by pH control of the reducing agent. The pH of 2.5, attained by adding hydrazine to oxalic acid, was the optimum pH for maintaining a high decontamination effect and lowering the corrosion at the same time. As this reducing agent can be decomposed into carbon dioxide, nitrogen and water by using a catalyst column with hydrogen peroxide, the amount of secondary radioactive waste is small. These good features were demonstrated through actual plant decontamination tasks.Keywords
This publication has 1 reference indexed in Scilit:
- Dilute Chemical Decontamination Program ReviewPublished by Springer Nature ,1980