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研究离子吸附性质的多孔玻璃修改与胺基组的研究
Bingxin Wang1, Hongyuan Hu1, Difei Huang1
1School of Chemistry and Chemical Engineering, University of South China, Hengyang, 421001, People's Republic of China.
Environmental science and pollution research international
|March 18, 2024
概括
修改的多孔玻璃 (PGs) 含有胺基组 (AO) 有效地吸附U(VI,达到99.94%的去除率. 这些吸附剂具有很高的选择性和出色的再生能力,这使得它们对去除应用有很大的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 多孔玻璃 (PG) 是通过玻璃酸盐相分离合成的.
- 用胺基组 (AO) 修改PG增强了它们的吸附性质.
- 了解吸附机制对于开发高效吸附剂至关重要.
研究的目的:
- 为了准备和表征氧化功能化的多孔玻璃 (PG-AO) 用于U(VI) 吸附.
- 研究PG-AO吸附剂的吸附性能,动力学和机制.
- 评估开发的吸附剂的选择性,再生能力和实际适用性.
主要方法:
- 准备了三种具有不同特定表面积的多孔玻璃 (PG).
- 使用氧胺法,用氧胺组修改了PG.
- 进行了批量吸附实验,以研究不同条件下 (pH,时间,共存离子) 的U(VI) 吸收.
主要成果:
- AO修改显著降低了PGs的特定表面积和微孔体积.
- 在pH 4.5.5下,PG-AO吸附剂对U () 的最大吸附能力为129 mg/g,在pH 4.5.5下显示为高.
- 实现了99.94%的去除效率,对Na+和K+具有很好的选择性.
- 吸附剂在5个吸附-脱附周期后保持了超过80%的去除效率.
结论:
- 胺基胺功能化的多孔玻璃是高效的吸附剂,用于U (VI) 的去除.
- 吸附过程主要由单层化学吸附控制,有离子交换和物理吸附的贡献.
- 开发的PG-AO吸附剂表现出优异的再生和选择性,表明它们在回收和废水处理中具有实际应用的潜力.
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