This study explores how various Thiobacillus strains influence the corrosion of radioactive waste drum materials and the migration of corroded products. Five strains of Thiobacillus spp. and two radioactive waste drum materials, the cold-rolled carbon steel (C-RCS) and hot-rolled carbon steel (H-RCS), were used. The physiological properties and the morphology of the tested Thiobacillus strains were investigated. The effects of Thiobacillus strains on the corrosion of carbon steel drum materials and the migration of corroded products were examined by measurements of weight loss, electrochemical analysis, and inductively coupled plasma-atomic emission spectrometry. Under microscopic observation, numerous bacteria were present in corroded products and the migration of the corroded products was accelerated by Thiobacillus strains. Results indicated that Thiobacillus strains increased the electrochemical parameters. For the same bacteria, the icorr of H-RCS exceeded that of C-RCS. Of the five tested strains, T. thiooxidans had the greatest effect on the migration of corroded products of RCS; T. thioparus was the weakest. The weight loss of RCS in the T. ferrooxidans culture exceeded that in the T. thiooxidans culture. Conclusively, the Thiobacillus strains promoted the corrosion of radioactive waste drum materials.
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机译：本研究探讨了各种硫杆菌菌株如何影响放射性废物鼓材料的腐蚀和腐蚀产品的迁移。五种硫杆菌SPP。使用两个放射性废物鼓材料，冷轧碳钢（C-RCS）和热轧碳钢（H-RCS）。研究了测试硫胞菌菌株的生理特性和形态。重量损失，电化学分析，和电感耦合等离子体 - 原子发射光谱法进行测量，检查对碳钢鼓材料的腐蚀和腐蚀产物的迁移硫杆菌菌株的影响。在显微镜观察下，腐蚀产品中存在许多细菌，并通过Thiobacillus菌株加速腐蚀产品的迁移。结果表明，Thiobacillus菌株增加了电化学参数。对于相同的细菌，H-RCS的ICORR超过了C-RCS。在五种测试的菌株中，T. Thioxidans对RCS的腐蚀产品的迁移产生了最大的影响; T. thioparus是最弱的。在T.Frooxidans培养物中的RCs的体重减轻超过了T.硫代氧酰胺培养物。结论，硫杆菌菌株促进了放射性废物鼓材料的腐蚀。
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