ScholarLink (思领科)
错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Enhanced U(VI) biomineralization by Kocuria rosea via phytate hydrolysis

  • 期刊论文

  • 发表日期：

    2024年9月9日

查看全文
  • Jiarui Qu,
  • Xuegang Wang,
  • Xueqin Zhou,
  • Shuo Sun,
  • Chao Liu,
  • Jian Wang,
  • Xiaoxia Yu,
  • Zhongkui Zhou,
  • Yadan Guo

摘要

In this study, the mechanism by which Kocuria rosea immobilizes U(VI) ions in water via phytate hydrolysis was investigated. The results showed that the optimal initial pH value is 6.0 for uranium removal by K. rosea in the presence of phytate, SEM showed that phytate addition to the test system enhanced the particle sizes of uranium-containing crystalline products, XRD and XPS analyses revealed that in the presence of phytate, K. rosea precipitated uranium primarily as H2(UO2)2(PO4)2·8H2O, CaU(PO4)2 and Na(UO2)(PO4)·3H2O. FT-IR spectroscopy also indicated that phytate hydrolysis resulted in the release of more phosphorus groups, thus enhanced the interaction between uranium and K. rosea. Taken together, phytate enhanced biomineralization while reducing the restoration cycle of uranium and increasing the size of uranium-containing crystalline particles in the products.