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| Preparation of Magnetic Fe3O4@PANI Composites Material and Its Adsorption Behavior for Ho(Ⅲ) |
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Received:October 12, 2024
Revised:December 08, 2024
Accepted:December 09, 2024
Published Online:April 19, 2025
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| DOI：doi：10.20237/j.issn.1007-7545.2025.05.014 |
| KeyWord:rare earth adsorption; Fe3O4@PANI; magnetic composite adsorbents; Ho(Ⅲ) |
| Author | Institution |
| LIU Jiaming |
江西理工大学 冶金工程学院 |
| CHEN Ziliang |
江西理工大学 冶金工程学院 |
| WANG Jian |
江西理工大学 冶金工程学院 |
| ZAN Miaomiao |
江西理工大学 冶金工程学院 |
| HE Shiwei |
自然资源部离子型稀土资源与环境重点实验室;安徽工业大学 冶金工程学院;安徽工业大学 冶金工程学院 |
| KANG Renxiang |
江西理工大学 冶金工程学院 |
| XIAO Yanfei |
江西理工大学 冶金工程学院;自然资源部离子型稀土资源与环境重点实验室 |
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| Abstract: |
| Rare earth is an indispensable strategic resource in China, which is widely used in high-tech fields such as aerospace, military defense and new rare earth materials. However, in the process of mining and using rare earth resources, a large amount of low-concentration rare earth wastewater will inevitably be generated, which will cause a waste of rare earth resources while polluting the water body. To solve this problem, a magnetic composite adsorbent Fe3O4@PANI was prepared by combining magnetic nano-Fe3O4 and polyaniline (PANI), and the low-concentration rare earth ions were enriched and recovered by adsorption. The results show that the outer layer of polyaniline effectively encapsulates the internal Fe3O4 core and provides effective protection for it in the environment of low pH value, so that the adsorption performance of the Fe3O4@PANI on Ho(Ⅲ) ions is significantly improved compared with Fe3O4, and the saturated adsorption capacity of Fe3O4@PANI can reach 145.48 mg/g, and the adsorption process conforms to the Freundlich model, the adsorption rate is still 82.77% after three cycles. The material has good potential for enrichment of rare earth ions. |
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