用纳米粒子和离子液增强的乳液液膜 (ELM),用于从废水中提取离子
Qusay Al-Obaidi1, Nora Yehia Selem2, Muthanna H Al-Dahhan3,4,5
1Chemical Engineering Department, University of Technology, Baghdad, Iraq.
概括
这项研究提高了用于工业废水处理的乳液液膜 (ELM) 的稳定性. 超偏磁铁氧化物纳米粒子和离子液体显著改善了的回收和膜耐用性.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 乳液液膜 (ELM) 技术在工业废水处理方面显示出前景.
- 工业ELM应用的一个关键挑战是实现高膜稳定性.
- 从废水中提取需要有效和稳定的分离方法.
研究的目的:
- 为了提高乳液液膜 (ELM) 稳定性和回收效率.
- 研究超超磁性氧化铁纳米粒子和ELM中的离子液体的协同效应.
- 评估改进的ELM是否适用于工业规模的废水处理.
主要方法:
- 在剥离阶段 (W1) 使用了超偏磁铁氧化物 (Fe2O3) 纳米粒子 (W1).
- 在油相 (O) 中加入了1-甲基-3-八-胺达-六酸 ([OMIM][PF6) 离子液.
- 评估了提取效率和随时间推移的乳液稳定性.
主要成果:
- 在3分钟内使用0.01%Fe2O3NP和5%[OMIM][PF6]实现了99.6%的回收.
- 显著提高了乳液稳定性,在3天后,泄漏率降至16%.
- 证明了几乎完全的提取和增强膜耐用性的潜力.
结论:
- Fe2O3纳米粒子和[OMIM][PF6]离子液的组合有效地提高了ELM的性能.
- 这种增强的ELM系统为工业回收提供了稳定高效的解决方案.
- 这些发现表明,可用于从工业废水中去除其他重金属离子.
相关概念视频
Extraction: Advanced Methods
438
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
438
Voltammetry: Stripping Methods
198
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
198
Coagulation
280
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
280


