阿米多克西姆工程提高了从废水中提取黄金的二氨基基改性基的吸附效率和选择性
Yihui Wu1, Dawei Xiang1, Manying Zhu1
1Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China; National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming 650093, Yunnan, China.
International journal of biological macromolecules
|June 26, 2025
概括
一种新的基托基吸附剂 (CS-DAMN-AO) 从废水中有效地回收金离子 (Au(III)). 这种可重复使用的材料显示出高容量和选择性,为黄金回收提供了可持续的解决方案.
科学领域:
- 环境化学环境化学
- 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:
- 由于重金属污染,工业废水带来了环境风险.
- 像黄金 (Au(III)) 这样的贵金属的有效回收在经济上至关重要.
- 现有的黄金回收方法往往在效率,选择性或可重复使用性方面面临限制.
研究的目的:
- 为了合成和表征一种阿米多克西姆功能化奇托吸收剂 (CS-DAMN-AO).
- 评估CS-DAMN-AO的吸附能力,动力学和选择性,用于Au (III) 的回收.
- 评估合成吸附剂的可重复使用性和实际应用潜力.
主要方法:
- 氨基胺功能化奇托 (CS-DAMN-AO) 的两步合成.
- 使用SEM-EDS,XPS,FTIR,XRD,BET和TGA进行表征.
- 批量吸附实验以确定吸附能力,动力学和选择性.
主要成果:
- CS-DAMN-AO在318K时对Au (III) 显示出1720.90mg/g的高吸附能力.
- 在30分钟内实现了90%以上的Au(III) 吸附,表明了快速的动力学.
- 吸附剂对竞争性离子对Au(III) 具有很好的选择性,并在多个循环中保持高效率.
结论:
- CS-DAMN-AO是一种高效,选择性和可重复使用的吸附剂,用于Au (III) 恢复.
- 该材料克服了现有吸附剂在处理复杂废水方面的局限性.
- 这项研究提出了一个有希望的新解决方案,用于从工业废水中可持续地回收黄金.
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