Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation

Shi-Bin Li; Xiao-Bin Xia; Qiang Qin; Shuai Wang; Hong-Jun Ma

doi:10.1007/s41365-022-01032-y

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Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation

NUCLEAR CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR MEDICINE | Updated：2022-12-16

- Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation
- Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation
- 核技术（英文版） 2022年33卷第4期文章编号：47
- Affiliations：
  
  1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
  2.University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  * xiaxiaobin@sinap.ac.cn
- Funds：
  
  Shanghai Sail Program(19YF1458000)
- DOI：10.1007/s41365-022-01032-y
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Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation[J]. 核技术（英文版）, 2022,33(4):47

Shi-Bin Li, Xiao-Bin Xia, Qiang Qin, et al. Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation[J]. Nuclear Science and Techniques, 2022,33(4):47
Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation[J]. 核技术（英文版）, 2022,33(4):47 DOI： 10.1007/s41365-022-01032-y.

Shi-Bin Li, Xiao-Bin Xia, Qiang Qin, et al. Decomposition of oil cleaning agents from nuclear power plants by supercritical water oxidation[J]. Nuclear Science and Techniques, 2022,33(4):47 DOI： 10.1007/s41365-022-01032-y.

摘要

Abstract

Oil cleaning agents generated from nuclear power plants (NPPs) are radioactive organic liquid wastes. To date, because there are no satisfactory industrial treatment measures, these wastes can only be stored for a long time. In this work, the optimization for the supercritical water oxidation (SCWO) of the spent organic solvent was investigated. The main process parameters of DURSET (oil cleaning agent) SCWO, such as temperature, reaction time, and excess oxygen coefficient, were optimized using response surface methodology (RSM), and a quadratic polynomial model was obtained. The determination coefficient (,R,2,) of the model is 0.9812, indicating that the model is reliable. The optimized process conditions were at 515℃, 66 s, and an excess oxygen coefficient of 211%. Under these conditions, the chemical oxygen demand (COD) removal of organic matter could reach 99.5%. The temperature was found to be the main factor affecting the SCWO process. Ketones and benzene-based compounds may be the main intermediates in DURSET SCWO. This work provides basic data for the industrialization of the degradation of spent organic solvents from NPP using SCWO technology.

关键词

Keywords

Supercritical water oxidationOil cleaning agentNuclear power plantsResponse surface methodology

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