NaCl添加剂对Na3 PO4电解质溶液去污能力的影响

摘要

Using Na3 PO4 solution as electrolyte ,effect of NaCl additive and its concentration on the decontam-ination 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 addit-ion of NaCl .The weight loss rate of stainless steel sheets with NaCl additive is always higher .While NaCl con-centrations 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 NaCl with a certain concentration can help improve the decontamination ability of Na3 PO4 electrolyte .%以Na3 PO4溶液为电解质，探讨了NaCl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Na3 PO4＋NaCl电解液的去污因子比Na3 PO4电解液高；（2）Na3 PO4＋NaCl电解液中的薄板失重率始终高于Na3 PO4电解液中的薄板；（3） NaCl添加剂浓度为200 g桙L时去污因子最高，250 g桙L时失重率最高。结果说明，一定浓度的NaCl添加剂能提高Na3 PO4电解液的去污效果。