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在从饮用水中去除六价时,采用磁活性Sn基纳米复合材料

Theopoula Asimakidou¹, Kyriaki Kalaitzidou², Fani Pinakidou³

¹Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece; Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.

|June 5, 2024

概括

一种新的磁性纳米复合材料有效地从水中去除六价,满足饮用水标准. 这项创新为净水提供了一个有前途的解决方案,利用氧化铁纳米颗粒和锡氧化化.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
纳米技术纳米技术

背景情况:

六价 (Cr(VI)) 对健康构成重大风险,是饮用水中令人担忧的污染物.
现有的水处理方法去除Cr6经常面临效率,成本或可扩展性方面的挑战.

研究的目的:

开发和描述一种新的磁性纳米复合材料,以有效地去除CrVI.
评估纳米复合材料在连续流系统中的性能,并评估其用于净水的潜力.

主要方法:

连续流合成Fe3O4纳米颗粒和abhurite (锡化).
湿混合制造一个均的Fe3O4装载的氧化-化纳米复合材料.
对的吸附能力和去除效率进行批量和试点规模的测试.

主要成果:

10%的Fe3O4装载纳米复合材料显示了7.2 mg/g的Cr (VI) 吸收能力,达到25 μg/L以下的残留度.
吸附动力学表明,由粒子间扩散主导的快速Cr(VI) 捕获,具有自发的内热过程,涉及降解到Cr(III).
使用磁分离器进行的试点规模测试显示了高效的Cr6去除,证明了固定床过的可行替代方案.

结论:

开发的磁性纳米复合材料是一种有效且潜在的具有成本竞争力的吸附剂,用于从水中去除六价.
该材料表现出良好的性能,通过磁性分离可回收利用,缺乏急性细胞毒性,使其适用于饮用水处理应用.

关键词:

吸附方式吸附方式吸附方式细胞毒性细胞毒性饮用水饮用水饮用水六价的六价是一种金属氧化物是一种金属氧化物.纳米颗粒纳米颗粒净化净化净化净化

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