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石英砂的表面修饰:对其进展情况及其对重金属吸附的影响进行了审查

Ting Wang¹, Weiyuan Cao¹, Yingqi Wang¹

¹Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541006, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541006, China.

Ecotoxicology and environmental safety

|June 25, 2023

概括

表面修改增强了石英砂的重金属离子吸附,克服了天然沙的局限性. 对于实际的废水处理应用,需要进一步的研究.

科学领域:

环境科学环境科学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

石英砂 (SiO2) 是一种具有成本效益的过介质,但由于其光滑的表面和少量的活性点,其吸附能力有限.
天然石英砂很快和,限制了其在去除重金属离子 (HMI) 等污染物的有效性.

研究的目的:

审查修改石英沙表面的策略和试剂,以改善HMI吸附.
分析表面修改的石英砂在水溶液中去除HMI的机制和有效性.

主要方法:

对石英沙表面修饰的流行策略和代理物的文献综述.
对修饰剂-石英砂相互作用 (静电力,范德瓦尔斯力,孔隙填充,化学结合,分子纠) 的分析.
检查吸附机制 (表面复杂化,离子交换,静电/重力).

主要成果:

表面修改有效地解决了天然石英砂的局限性,包括低表面积和快速网站和.
修饰剂通过各种物理和化学力量与石英砂相互作用,增强吸附能力.
吸附机制主要涉及表面复杂化,离子交换和物理力.

结论:

表面修饰的石英砂显示出具有成本效益的HMI去除的希望,但实际的废水处理需要克服实验室规模的局限性.
需要进一步研究粒子大小,再生,成本效益以及更广泛采用的因素.
本综述为开发先进的HMI吸附过介质提供了一个参考.

关键词:

吸附机制是一种吸附机制.重金属离子 (HMI) 是一种重金属离子.修改机制修改机制自然石英砂是天然的石英砂.表面修饰的石英砂是一种表面修饰的石英砂.

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