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<p>A novel biocomposite (CBP@Fe<sub>3</sub>O<sub>4</sub>@ZIF-8-PA) was synthesized to remove uranium contamination from water resources. It showed excellent adsorption capacity for low-concentration U(VI) (1 mg L<sup>−1</sup>) over a wide pH range (3–8), with a maximum adsorption rate of 99.25%. The pseudo-second-order and Langmuir models fit the adsorption processes well. Most coexisting ions had minimal impact on adsorption within a certain concentration range. The re-adsorption efficiency remained around 80% after five cycles. The biocomposite performed well under acidic, neutral, and weakly alkaline conditions, demonstrating its potential for practical applications.</p>

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The effective removal of low concentration of uranium using a biocomposite: bacteria modified by Fe3O4 and ZIF-8-PA

  • 期刊论文

  • 发表日期：

    2025年11月18日

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  • Zifan Hong,
  • Qian Wu,
  • Zhiming Hu,
  • Miao Yu,
  • Shuqian Yang,
  • Sheng He,
  • Jinquan Liu,
  • Xilin Xiao,
  • Yan Tan

摘要

A novel biocomposite (CBP@Fe3O4@ZIF-8-PA) was synthesized to remove uranium contamination from water resources. It showed excellent adsorption capacity for low-concentration U(VI) (1 mg L−1) over a wide pH range (3–8), with a maximum adsorption rate of 99.25%. The pseudo-second-order and Langmuir models fit the adsorption processes well. Most coexisting ions had minimal impact on adsorption within a certain concentration range. The re-adsorption efficiency remained around 80% after five cycles. The biocomposite performed well under acidic, neutral, and weakly alkaline conditions, demonstrating its potential for practical applications.