摘要
以月桂酰基甘氨酸钠(SLG)为发泡剂,十二烷醇(DOH)、黄原胶(XG)及石油磺酸盐(PS)为助剂制备了泡沫去污剂,利用泡沫去污剂对硝酸氧铀酰污染的材料表面进行去污,去污后废弃泡沫酸化消泡。研究了DOH,XG对泡沫稳定性的影响,考察了PS添加量和去污时间对泡沫去污率的影响,p H值对消泡的影响。结果表明:DOH,XG的加入增加了泡沫的稳定性,大大减少了去污过程中的排液量;去污时间为30 min时,加入质量分数1%PS的去污剂对深部污染的去污率高达98%,其机理为PS中的磺酸根与铀酰离子发生了化学结合,泡沫在p H值小于4.07时可完全消泡。
Foam decontaminant was prepared using Sodium N - laurel glycine(SLG)as the foaming a-gent,and dodecyl alcohol(DOH),xanthan gum(XG)and petroleum sulfonate(PS)as an additive for the purpose of decontamination of the surface contaminated by uranyl nitrate. After decontamination, waste foam was defoamed with hydrochloric acid. The effect of DOH,XG on foam stability,the effect of pH value on defoaming,and the effect of the amount of PS and decontamination time on the decontamina-tion efficiency were investigated. The results show that the addition of DOH and XG could improve the stability of foam and reduce the drainage volume with a large mount in the decontamination process. The decontamination rate could reach 98% when the addition of PS is 1% and decontaminant time is 30 min. The mechanism was the chemical interaction of the sulfonic acid root and the uranyl ion. The foam can be completely defoamed when the pH value is below 4. 07.
出处
《西南科技大学学报》
CAS
2016年第1期25-29,共5页
Journal of Southwest University of Science and Technology
基金
国防科工局核能开发专项(12zg610202)
西南科技大学研究生创新基金(13ycjj13)
