在铜中的多洛米特吸附剂上吸附/脱附过程的特征 (II) 从水溶液中去除
Eleonora Sočo1, Andżelika Domoń2, Dorota Papciak2
1Department of Inorganic and Analytical Chemistry, Faculty of Chemistry, Rzeszow University of Technology, 35-959 Rzeszow, Poland.
Materials (Basel, Switzerland)
|July 14, 2023
概括
多洛米特有效地从水中去除铜 (II) 离子. 多洛米特D-II显示出更高的效率和更好的再生,使其成为重金属修复的有希望的吸附剂.
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:
- 工业活动将危险的重金属释放到环境中.
- 从水溶液中有效地去除像铜这样的重金属至关重要.
- 多洛米特是一种有吸引力的,低成本的,环保的吸附材料.
研究的目的:
- 评估两种类型的多洛米特 (D-I和D-II) 对从水溶液中去除铜 (II) 离子的效率.
- 描述多洛米特作为吸附剂的特性.
- 了解多洛米特铜吸附机制和吸附能力 (II).
主要方法:
- 使用零电荷点 (PZC),元素分析,FT-IR,XRD和SEM进行多洛米特的表征.
- 吸附实验以确定铜的除去效率在各种度下.
- 对吸附等温体 (Redlich-Peterson,Jovanović,Langmuir) 的分析,以了解吸附行为.
- 对吸附剂再生和脱吸效率的评估.
主要成果:
- 铜 (II) 离子的吸附效率为D-I的58-80%和D-II的80-97%.
- 吸附机制包括离子交换 (D-II) 和化学吸附 (D-I).
- 多洛米特D-II显示出更高的脱吸效率 (58-80%),表明更好的可重复使用性.
- 最大吸附能力为D-I的378 mg/g,而D-II的308 mg/g.
- 兰木尔,雷德利希-彼得森和约万诺维奇等热量最好地描述了单层吸附过程.
结论:
- 多洛米特是一种高效的吸附剂,用于从水溶液中去除铜.
- 与D-I相比,多洛米特D-II在吸附效率和可再生性方面表现优越.
- 这项研究证实了多洛米特作为重金属修复的可持续材料的潜力.
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