| 引用本文: | 张自恒,李林波,梁李斯,弥晗,马洪月.金属基吸附剂及其复合材料吸附除氟研究进展[J].材料科学与工艺,2024,32(1):100-112.DOI:10.11951/j.issn.1005-0299.20220222. |
| ZHANG Ziheng,LI Linbo,LIANG Lisi,MI Han,MA Hongyue.Research progresson adsorption of fluoride by metal-based adsorbents and their composites[J].Materials Science and Technology,2024,32(1):100-112.DOI:10.11951/j.issn.1005-0299.20220222. |
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| 摘要: |
| 化工、冶炼、电池等行业所排放的氟废水引发的氟中毒现象备受关注,分析了沉淀、膜处理、离子交换、吸附等技术的优缺点,吸附法由于操作简单、经济高效被认为是极具前景的水体除氟方法。本文对铝基、铁基、稀土基、金属有机骨架吸附剂及其改性材料在含氟废水中的除氟性能进行了总结和评价,分析了其制备过程、脱氟机制以及外界影响因素。发现材料晶型可以决定吸附过程的吸附能,大的比表面积可以在吸附过程中提供更多的活性位点,良好的孔结构可以降低吸附传质阻力,提高吸附性能;材料表面官能团的强化、不同金属材料的复合协同作用可以提高吸附剂的脱氟效率,可为今后制备新型高效除氟材料提供参考。提出了目前吸附除氟领域亟待解决的问题并对金属基吸附剂在除氟领域的发展作出展望。 |
| 关键词: 吸附剂 吸附法 氧化铝 复合材料 氟化物 水处理 金属材料 |
| DOI：10.11951/j.issn.1005-0299.20220222 |
| 分类号:TQ424；X503 |
| 文献标识码:A |
| 基金项目:陕西省教育厅重点实验室项目(Z20200151)；陕西省自然科学基础研究计划面上项目(2022JM245). |
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| Research progresson adsorption of fluoride by metal-based adsorbents and their composites |
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ZHANG Ziheng1, LI Linbo1, LIANG Lisi1, MI Han2, MA Hongyue2
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(1.College of Metallurgical Engineering, Xi an University of Architecture and Technology, Xi an 710055, China; 2. Key Laboratory of Gold and Resources of Shaanxi, Xi an 710055, China)
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| Abstract: |
| The fluorosis caused by fluoride wastewater discharged from chemical, smelting, battery and other industries has attracted much attention. The advantages and disadvantages of precipitation, membrane treatment, ion exchange, and adsorption technique have been analyzed.Adsorption method is considered to be a promising method for fluoride removal in water due to its simple operation and economical efficiency. In this paper, the fluoride removal performance of aluminum-based, iron-based ,rare earth-based and metal-organic framework adsorbents and their modified materials in fluoride wastewater were summarized and evaluated, and the preparation processes, defluorination mechanisms and external influencing factors were also analyzed. It was found that the material crystal form can determine the adsorption energy of the adsorption process.A large specific surface area can provide more active sites in the adsorption process, and a good pore structure can reduce the adsorption mass transfer resistance and improve the adsorption performance. It was also found that the strengthening of functional groups on the surface of the material and the composite synergy of different metal materials can improve the defluorination efficiency of the adsorbent. In conclusion this paper provides a reference for the preparation of new and efficient fluoride removal materials in the future, puts forward the problems that need to be solved in the field of adsorption fluoride removal, and looks ahead the development of metal-based adsorbents in the field of fluoride removal. |
| Key words: absorbents absorption alumina composites fluoride water treatment metallic material |
