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液体-固体系统中的关键层影响了使用酸盐支持的硫化物纳米零价值铁的的修复

Chundi Zhou¹, Caiyun Han², Nengsheng Liu³

¹Faculty of Material and Environment, Guangxi University for Nationalities, Nanning 530008, China; College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.

Journal of environmental sciences (China)

|October 1, 2023

概括

硫化纳米零价值铁被固定在ZSM-5焦岩 (Z/S-nZVI) 上,在60mg/L以下的度下有效地修复六价值 (Cr(VI)). 性能依赖于度,具有影响去除机制的关键层.

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:

六价 (Cr(VI)) 对环境和健康构成重大风险.
开发高效和稳定的材料用于Cr6的修复是非常重要的.

研究的目的:

为了研究硫化纳米零价值铁在ZSM-5热带石 (Z/S-nZVI) 上固定,用于Cr (VI) 修复的有效性.
阐明了通过Z/S-nZVI.去除Cr(VI) 的机制.

主要方法:

硫化纳米零价值铁 (nZVI) 在ZSM-5热带石上的固定.
批量实验以评估在不同度下Cr(VI) 去除性能.
动力学,X射线衍射 (XRD),X射线光电子谱仪 (XPS) 和传输电子显微镜 (TEM) 分析.
铁离子溶解和吸附剂剂量效应的研究.

主要成果:

Z/S-nZVI表现出改善的Cr (VI) 修复性能,其度在60 mg/L以下的度增加.
在Cr (VI) 度超过60 mg/L时,性能显著下降.
分析显示,随着污染物度的增加,关键层组成 (Cr(VI),Fe(II),O,H) 和物种 (Cr(III) 到Cr(VI) 的变化.
XRD,XPS和TEM证实了删除机制.

结论:

Z/S-nZVI证明了有效的Cr(VI) 整治,其性能取决于度.
该材料具有很高的选择性和稳定性,使其适合实际应用.
了解关键层动态是优化基于nZVI的补救策略的关键.

关键词:

腐蚀是一种腐蚀.这就是Cr (VI) 的意思.关键层是一个关键层.选择性的选择性稳定的稳定性稳定的稳定性

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