核化学与放射化学2023，Vol.45Issue(6)：557-562,6.DOI:10.7538/hhx.2023.45.06.0557
蒙脱石-脱氮硫杆菌体系对Sr2+的去除能力
Solidification Ability of Sr2+by Montmorillonite-Thiobacillus Denitrificans System
摘要
Abstract
The pollution of radionuclides is extremely harmful to the human environment,and it is of great significance to study its feasible treatment methods.There are few studies on the removal of Sr2+by the combination of microorganisms and minerals.This experiment constructed the bacteria-mineral system with the previously screened thiobacillus denitrifi-cans and montmorillonite,and liquid ion chromatography,multifunctional X-ray diffractome-ter(XRD),scanning electron microscopy(SEM)and other methods were used to characterize pH and SO2-changes in the system and the removal ability and curing ability of the montmo-rillonite-thiobacillus denitrificans system(Mont-TD)on Sr2+ in solution.The results show that the Mont-TD system has a high removal effect on Sr2+.Adding 6 g montmorillonite and 1∶100 bacterial solution to the medium with Sr2+concentration of 1 000 mg/L and 150 mL,after 30 d,the removal rate of Sr2+reaches 93.2％,the solidification rate reaches 71.1％,and SrSO4 crystals are produced in the product.By constructing the Mont-TD system,the effective removal of Sr2+in the solution is achieved,and part of it is stably solidified.Montmorillonite-thiobacillus denitrificans system can provide an idea for the treatment of strontium ion pollution in the environment.关键词
蒙脱石/脱氮硫杆菌/Sr2+/固化率Key words
montmorillonite/thiobacillus denitrificans/Sr2-/curing rate分类
核科学引用本文复制引用
代群威,利勇,邬琴琴,赵玉连,王维富..蒙脱石-脱氮硫杆菌体系对Sr2+的去除能力[J].核化学与放射化学,2023,45(6):557-562,6.基金项目
国家自然科学基金资助项目(41102212) （41102212）
