Radioactive rare-earth waste reutilization for wastewater treatment and examination of its genetic toxicity
In this study, low-level radioactive rare-earth wastes (containing 232Th, specific activity 5000-8000 Bq/kg ) were used as raw materials, which were made into special functional materials. The radioactivity of these special functional materials complies with the health protection standard for radioactive materials (GB6566-86). The tests showed that the special cement could lower COD; the degradation rate increased with time. In acidic media, the cement could remove E. coli effectively. Applying aeration and adding blocks of cement, data indicated that aeration adding blocks of cement had synergistic action on sewage treatment. The micronuclei and abnormal nuclei rates of peacock fish (Latin names: Poecilia reticulate) were measured to determine the genetic toxic effects of rare-earth waste and its special functional materials (cement, plastic). Results show that harmfulness of products made from this waste was greatly decreased, and resources could be effectively saved.
Rare-earth waste degradation rate of COD micronuclei-rate abnormal nuclei rate
Y.Zhang Q.J.Meng N.Zhou
School of resource & environment, Northeast Agricultural University, Harbin, Heilongjiang, China
国际会议
第十二届水-岩相互作用国际研讨会(P0roceedings of the 12th International Symposium on Water-Rock Interaction)
昆明
英文
693-696
2007-07-31（万方平台首次上网日期，不代表论文的发表时间）