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从弱酸性废水中回收,使用可回收的γ-Fe₂O₃@meso-SiO₂

Hong Li¹, Juexi Song², Chuqin Ma¹

¹School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, Guangdong, China.

Journal of environmental management

|October 28, 2023

概括

一种新的磁芯外材料有效地从废水中去除了99.7%以上的. 这种吸附剂具有高容量,快速平衡和选择性,为回收提供了可持续的解决方案.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学化学化学

背景情况:

矿开采会产生危险的含有 (VI) 的酸性废水.
有效捕获 (VI) 对于环境保护和资源回收至关重要.

研究的目的:

设计和合成一种新型的半孔核心外材料,用于U(VI) 的去除.
评估材料的吸附性能,选择性和再生能力.

主要方法:

使用表面活性剂模板方法创建了 γ-Fe2O3@meso-SiO2.
进行了批量实验,以测试U(VI) 的吸附效率,容量和动力学.
在存在竞争性离子和实际废水中评估了选择性.

主要成果:

该 γ-Fe2O3@meso-SiO2 材料实现了>99.7%的U(VI) 去除,容量为41.40 mg/g.
在15分钟内达到吸附平衡.
在酸性废水中和与竞争性离子保持高的U(VI) 吸附率 (>90%),表明选择性.
该材料在五个周期内表现出极好的再生和重复使用性能.

结论:

γ-Fe2O3@meso-SiO2 是一种高效和选择性的吸附剂,用于从酸性废水中去除U (VI).
吸附机制涉及化学复合和静电吸引.
这种材料为控制迁移和从采矿废水中回收 (VI) 提供了一个有希望的解决方案.

关键词:

循环再生是一种循环再生.选择性地吸附.(VI) 是一种 γ-Fe ((2) O ((3) @meso-SiO ((2)) 的二氧化二氧化二氧化

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