从水溶液中吸附和欧离子的吸附行为,使用基于石膏的制造无机吸附剂
M R Abass1, R A Abou-Lilah2, L M S Hussein1
1Hot Laboratories, and Waste Management Centre, Egyptian Atomic Energy Authority, Cairo, 13759, Egypt.
Scientific reports
|August 26, 2024
概括
一种新型的锡酸盐滑石膏吸附剂有效地从水中去除 (Sr(II)) 和欧 (Eu(III)). 这种高效的吸附剂具有很高的回收率,适合环境修复.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 放射化学 放射化学是指辐射化学.
背景情况:
- (Sr(II)) 和欧 (Eu(III)) 是水溶液中的重要放射性污染物.
- 开发高效的吸收材料对于环境整治和核废物管理至关重要.
研究的目的:
- 为了合成和表征一种锡酸滑石吸附剂,用于 Sr (II) 和 Eu (III) 的去除.
- 研究吸机制,动力学和Sr (II) 和Eu (III) 的热力学对合成的吸剂.
- 为了评估吸附剂的脱吸效率和可重复使用性.
主要方法:
- 用于吸附剂合成的沉技术.
- 使用FT-IR,SEM,XRD,XRF,TGA和DTA进行表征.
- 吸附实验改变pH值,度和时间;等温和动力建模 (伪二级,兰木尔).
主要成果:
- 合成的锡酸滑石膏吸收剂有效吸收了Sr (II) 和Eu (III).
- 吸附取决于pH值,遵循伪二次动力学和兰格穆尔异热模型.
- 热力学分析显示了自发和内热吸附过程.
- 0.1 M HCl 对于Sr(II) (96.8%) 和Eu(III) (92.9%) 均实现了较高的脱吸率.
结论:
- 合成的锡酸盐滑石粉是一种高效且有前途的吸收剂,用于从水溶液中去除Sr (II) 和Eu (III).
- 吸附剂显示出良好的回收和在环境修复应用中重复使用的潜力.
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