利用金属有机框架材料 MIL-100(Fe) 去除环境水生系统中的碲(IV)

IF 4.3 4区 环境科学与生态学 Q2 ENGINEERING, ENVIRONMENTAL
Water Reuse Pub Date : 2024-01-09 DOI:10.2166/wrd.2024.118
Yiru Huang, Youyou Li, Qingwei Zhong, Cheng Luo
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引用次数: 0

摘要

金属有机框架(MOF)材料具有多孔性和大比表面积的特点,具有优异的吸附性能。为了去除环境水生系统中的 Te(IV),本研究首次提出使用 MIL-100(Fe)。该材料对 Te(IV) 具有很强的吸附能力,最大吸附量为 531.9 mg/g,优于其他吸附材料。吸附等温线模型和动力学模型表明,Te(IV)的吸附过程主要是单层化学吸附。根据 Te(IV)在 MIL-100(Fe)上吸附的热力学参数,吸附反应是内热的。实验分别考察了影响材料吸附性能的因素,包括吸附剂剂量、Te(IV) 初始浓度、pH 值、吸附时间和共存离子。即使在高离子强度和高浓度共存离子条件下,该材料对 Te(IV)的吸附效率仍达到 95% 以上。该材料已成功应用于去除湖水、河水和海水中的 Te(IV),并取得了令人满意的效果。由于溶液的盐度和离子强度较高,海水基质对 Te(IV) 的去除率略低于淡水(河水和湖水)。因此,这种材料有望从复杂的水生系统中去除 Te(IV)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Removal of Tellurium(IV) from environmental aquatic systems using metal-organic framework material MIL-100(Fe)
Metal-organic framework (MOF) materials, characterized by their porosity and large specific surface areas, exhibit excellent adsorption properties. With the aim of removing Te(IV) from environmental aquatic systems, this study is the first to propose the use of MIL-100(Fe). The material reveals a strong adsorption capacity for Te(IV), with maximum adsorption of 531.9 mg/g, superior to other adsorbent materials. Adsorption isotherm models and kinetic models indicate that the adsorption process of Te(IV) primarily involves monolayer chemical adsorption. According to the thermodynamic parameters of Te(IV) adsorption on MIL-100(Fe), the adsorption reaction is endothermic. The experiment individually examined factors affecting the material's adsorption performance, including adsorbent dose, initial concentration of Te(IV), pH, adsorption time, and coexisting ions. Even under high ion strength conditions and high concentrations of coexisting ions, the material's adsorption efficiency for Te(IV) still reached over 95%. The material has been successfully applied to remove Te(IV) from lake water, river water, and seawater, yielding satisfactory results. Due to the high salinity and ionic strength of the solution, the removal efficiency of Te(IV) in the seawater matrix was slightly lower than that in freshwater (river and lake water). Thus, this material shows promise for the removal of Te(IV) from complex aquatic systems.
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来源期刊
Water Reuse
Water Reuse Multiple-
CiteScore
6.20
自引率
8.90%
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审稿时长
7 weeks
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