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<p>In this study, peanut shell was used as the raw material to synthesize activated biochar-MnO composite (PSBC-K) using KMnO<sub>4</sub> as an activating agent. The Q<sub>max</sub> of U(VI) by PSBC-K was 569.8&#xa0;mg/g, which was 3.9 times the Q<sub>max</sub> of PSBC (147.3 mg/g). Besides, PSBC-K exhibited good selectivity for U(VI) and excellent cycling performance. The removal mechanisms of U(VI) for PSBC-K were primarily dominated by electrostatic interaction, coordination reaction, precipitation and ion exchange. Overall, this work presented a sustainable and straightforward method for creating a novel adsorbent for efficient U(VI) separation.</p>

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Efficient adsorption of U(VI) using potassium permanganate-modified biochar: adsorption behavior and mechanism

  • 期刊论文

  • 发表日期：

    2025年4月24日

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  • Yong Zhang,
  • Xuan Liu,
  • Kexing Jiang,
  • Jiaqi Feng,
  • Yujia Liu

摘要

In this study, peanut shell was used as the raw material to synthesize activated biochar-MnO composite (PSBC-K) using KMnO4 as an activating agent. The Qmax of U(VI) by PSBC-K was 569.8 mg/g, which was 3.9 times the Qmax of PSBC (147.3 mg/g). Besides, PSBC-K exhibited good selectivity for U(VI) and excellent cycling performance. The removal mechanisms of U(VI) for PSBC-K were primarily dominated by electrostatic interaction, coordination reaction, precipitation and ion exchange. Overall, this work presented a sustainable and straightforward method for creating a novel adsorbent for efficient U(VI) separation.