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高效的可再生氨基化木质素吸附剂,用于 (III) 和 (VI) 的共同吸附

Qing Qiao¹, Xinlu Liu², Huipng Deng¹

¹School of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.

International journal of biological macromolecules

|February 26, 2026

概括

一种新的磁性素吸附剂 (Fe-PEI/SLS) 有效地从废水中去除有毒的重金属,如 () 和 (). 这种增强的生物质材料具有很高的吸附能力和出色的可回收性,用于环境修复.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
生物技术是生物技术.

背景情况:

重金属离子是工业废水中重要的有毒污染物,危及生态系统和人类健康.
来自生物质的材料为开发高效和选择性的重金属吸附剂提供了一个有前途的途径.

研究的目的:

为了合成和表征一种新的磁性聚乙烯胺功能化素吸附剂 (Fe-PEI/SLS).
评估Fe-PEI/SLS在去除 (As(III)) 和 (Cr(VI)) 的吸附性能和机制.
评估Fe-PEI/SLS吸附剂的再生能力和实际应用潜力.

主要方法:

合成磁性聚乙烯胺-功能化木质素吸收剂 (Fe-PEI/SLS).
使用扫描电子显微镜 (SEM),富里埃变换红外光谱 (FTIR) 和X射线光电子光谱 (XPS) 的表征.
吸附实验,以确定吸附能力,动力学,和机制,为As (III) 和Cr (VI).

主要成果:

与原始红素相比,Fe-PEI/SLS具有显著增强的磁反应能力和重金属亲和力.
取得了异常的吸附能力:54.98 mg/g的酸 (III) 和71.68 mg/g的酸 (VI),比未经修改的酸显著改善.
吸附机制涉及静电吸附和三元表面复合,在混合As (III) -Cr (VI) 系统中观察到具有竞争性的吸附.

结论:

铁-PEI/SLS表现出高效率,快速动力学,以及在去除 (III) 和 (VI) 时的优异再生.
吸附剂在真正的泥水中实现了显著的污染物去除,这表明了强大的实际应用潜力.
这项研究为在废水处理中使用基于素的吸附剂提供了基础,并提供了对共去除机制的见解.

关键词:

(III) 和Cr (VI) 的使用.协同吸收协同吸收酸二硫酸是什么意思

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