NaCl添加剂对Na_3PO_4电解质溶液去污能力的影响
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摘要
以Na_3PO_4溶液为电解质,探讨了Na Cl添加剂及其浓度对受放射性污染的不锈钢薄板去污效果的影响。结果表明:(1)电解时间越长去污因子越高,且Na_3PO_4+Na Cl电解液的去污因子比Na_3PO_4电解液高;(2)Na_3PO_4+Na Cl电解液中的薄板失重率始终高于Na_3PO_4电解液中的薄板;(3)Na Cl添加剂浓度为200 g/L时去污因子最高,250 g/L时失重率最高。结果说明,一定浓度的Na Cl添加剂能提高Na_3PO_4电解液的去污效果。
Using Na_3PO_4 solution as electrolyte,effect of Na Cl additive and its concentration on the decontamination ability of an electrochemical process for radioactive contaminated stainless steel sheet was investigated. The results indicate that the decontaminate factor increases with the extension of time,and also with the addition of Na Cl. The weight loss rate of stainless steel sheets with Na Cl additive is always higher. While Na Cl concentrations are 200 g / L and 250 g / L,the decontaminate factor and weight loss rate reach the max of 13. 7 and 2. 21% respectively. It shows that Na Cl with a certain concentration can help improve the decontamination ability of Na_3PO_4 electrolyte.
Using Na_3PO_4 solution as electrolyte,effect of Na Cl additive and its concentration on the decontamination ability of an electrochemical process for radioactive contaminated stainless steel sheet was investigated. The results indicate that the decontaminate factor increases with the extension of time,and also with the addition of Na Cl. The weight loss rate of stainless steel sheets with Na Cl additive is always higher. While Na Cl concentrations are 200 g / L and 250 g / L,the decontaminate factor and weight loss rate reach the max of 13. 7 and 2. 21% respectively. It shows that Na Cl with a certain concentration can help improve the decontamination ability of Na_3PO_4 electrolyte.
引文
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[2]何佳恒,钟文彬,罗顺忠,等.核设施用去污技术[J].辐射防护通讯,2007,27(5):24.
[3]石搏颗吉.核设施去污技术[M].北京:原子能出版社,1997.
[4]陆春海,孙颖.化学去污技术的发展及其在核设施退役中的应用[J].环境技术,2002,20(1):25.
[5]邬强,崔惠玲,王川.超声波-化学去污工艺在核电厂的应用研究[J].应用化工,2007,36(1):90.
[6]陆春海.电化学去污方法和技术研究[D].北京:中国工程物理研究院,2004.
[7]Parker R A.Removal of Radionuclides by Electrokinetic Soil Processing[R].EPA-600-J-93-296,1993.
[8]Allen R P,Arrowsmitns H W,Charilot L A,et al.Electropolishing as a Decontamination Process:Process and Application[R].PNL-SA-6858,1978.
[9]Wedmen D E,Martinez H E,Nelson T O.Electrolytic Deconductive Materials for Hazardous Waste Magament[R].LA-UR-96-3795,1997.
[10]陈伟,彭乔.CO2饱和Na Cl溶液中Cl-浓度对2Cr13不锈钢腐蚀行为的影响[J].材料保护,2013,46(2):26.
[11]韩燕,赵雪会,白真权,等.不同温度下超级13Cr在Cl-/CO2环境中的腐蚀行为[J].腐蚀与防护,2011,32(5):366.
[12]邵元华,等译.电化学方法原理和应用(第二版)[M].北京:化学工业出版社,2005:340.
[13]胡赓祥,蔡询,戎咏华.材料科学基础(第三版)[M].上海:上海交通大学出版社,2010:54.
[14]李荻.电化学原理(第三版)[M].北京:北京航空航天大学出版社,2008:112.