的高效吸收由氨基功能化β-环氧支持飞灰复合物从污染的水
Congcong Chen1, Xuan Liu1, Xiaoyu Tian1
1State Key Laboratory of Environment-friendly Energy Materials, Sichuan Co-Innovation Center for New Energetic Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Nuclear Waste and Environmental Safety Key Laboratory of Defense, School of National Defence Science & Technology, Southwest University of Science and Technology, Mianyang 621010, China.
The Science of the total environment
|April 12, 2024
概括
一种新的飞灰吸附剂PEI/PDA/β-CD/FA,有效地从水中去除,效率高 (98.7%) 和容量高 (622.8 mg/g). 这种新型材料在废水处理中表现出极好的选择性和可重复使用性.
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 化学 化学
背景情况:
- 水中的污染对环境和健康构成重大风险.
- 需要有效的吸附剂来从工业废水中去除.
- 飞 (FA) 是一个丰富的工业副产品,具有水处理应用的潜力.
研究的目的:
- 合成和描述一种新型吸附剂,以有效地从污染水中去除 (UO2^2+).
- 在吸收效率,容量,选择性和可重复使用性方面评估合成吸附剂的性能.
- 为了阐明增强吸附背后的机制.
主要方法:
- 聚乙烯胺/聚多巴胺功能化β-环氧化支持飞灰 (PEI/PDA/β-CD/FA) 的合成.
- 在最佳条件下进行的吸收实验 (pH 5.0,298 K).
- 吸附剂的表征和吸附机制的分析 (静电吸引,键,协调,复杂化).
主要成果:
- PEI/PDA/β-CD/FA吸附剂的吸效率达到98.7%,容量为622.8 mg/g,显著超过未经修改的飞.
- 吸附剂表现出高选择性,在干扰离子的存在下,在五个循环后保持了94.5%的吸收效率.
- 鉴定证实,吸附通过多种机制发生,包括静电吸引,结合,协调和复杂化.
结论:
- PEI/PDA/β-CD/FA是一种高效和稳定的吸附剂,用于从污染水中去除.
- β-环氧支持和PEI/PDA涂层的协同效应增强了吸附.
- 该吸附剂由于其出色的性能和可回收性,对实际污水处理中的实际应用具有很大的前景.
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