Scholarlink

<p>Natural uranium is essential for clean nuclear energy, providing significant economic and social benefits, but its extraction leads to the accumulation of uranium mill tailings (UMTs), which pose risks to human health and the environment. This study investigates how environmental conditions influence uranium release from UMTs at the Jaduguda tailings pond in India. Sequential extraction analyses reveal that approximately 50% of uranium is bound to silicate minerals, while only about 4% exists in an exchangeable form. Batch leaching experiments using rainwater indicate that around 3.5% of the total uranium content is released over an 18-h period, with variations in rainwater composition and contact time affecting this release. Monitoring well analyses show predominant sulfates and chlorides as anions, with calcium and sodium as the dominant cations, alongside trace levels of iron and manganese at mean concentrations of 3.38 (± 3.16) mg L<sup>−1</sup> and 0.98 (± 1.44) mg L<sup>−1</sup>, respectively. Groundwater samples reflect typical ion concentrations for the mineralized Singhbhum belt, confirming that effective long-term storage measures have limited contaminant migration from the tailings.</p>

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

Uranium migration in mill tailings and impact on subsurface water quality in Jaduguda, India

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月10日

查看全文
  • Sarjan Singh,
  • Sanjay Kumar Jha,
  • Narendra Kumar Sethy,
  • Vivekanand Jha,
  • Aditi Chakrabarty Patra,
  • Sabyasachi Rout

摘要

Natural uranium is essential for clean nuclear energy, providing significant economic and social benefits, but its extraction leads to the accumulation of uranium mill tailings (UMTs), which pose risks to human health and the environment. This study investigates how environmental conditions influence uranium release from UMTs at the Jaduguda tailings pond in India. Sequential extraction analyses reveal that approximately 50% of uranium is bound to silicate minerals, while only about 4% exists in an exchangeable form. Batch leaching experiments using rainwater indicate that around 3.5% of the total uranium content is released over an 18-h period, with variations in rainwater composition and contact time affecting this release. Monitoring well analyses show predominant sulfates and chlorides as anions, with calcium and sodium as the dominant cations, alongside trace levels of iron and manganese at mean concentrations of 3.38 (± 3.16) mg L−1 and 0.98 (± 1.44) mg L−1, respectively. Groundwater samples reflect typical ion concentrations for the mineralized Singhbhum belt, confirming that effective long-term storage measures have limited contaminant migration from the tailings.