打破纯度和回收之间的权衡:基于膜结构-性质-性能关系的全面数学建模
Fengrui Yang1, Ming Yong2, Zhikao Li3
1Dow Centre for Sustainable Engineering Innovation, School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia.
Water research
|April 25, 2025
概括
使用纳米过膜从盐水中优化提取是关键. 这项研究增强了膜模型,以实现高纯度和回收,克服了以前有效回收资源的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 纳米过 (NF) 膜对于资源回收至关重要,特别是从高 (Mg) 盐水中提取 (Li).
- 提取的一个重大挑战是实现高Li+纯度和最大限度地回收Li+之间的权衡.
研究的目的:
- 扩展多南硬质孔模型与介电排除 (DSPM-DE) 以分析过程尺度上的膜结构-性质-性能关系.
- 在模块规模的工艺过程中量化内在膜参数对Li+纯度和回收的影响.
主要方法:
- 利用扩展的DSPM-DE框架来建模膜性能.
- 分析了膜电荷 (中性,正,负) 和孔径大小对Li+分离的影响.
- 研究了影响Li+纯度和回收的工艺规模参数.
主要成果:
- 电中性和正电荷的膜表现出比负电荷的膜更高的性能.
- 具有小孔径和高水透率的正电荷膜在一次通过中实现了~98%的Li+纯度和~93%的Li+回收.
- 负+排斥被确定为增强+恢复的关键,尽管它可能会影响系统流量分布.
结论:
- 确定了关键的膜参数 (孔径大小,电荷密度) 以优化工艺规模的提取.
- 使用特定的膜设计,展示了一种克服Li+纯度恢复权衡的方法.
- 提供了开发高性能膜的基本见解,以有效地从盐水中回收资源.
更多相关视频
11:25Identification and Quantification of Decomposition Mechanisms in Lithium-Ion Batteries; Input to Heat Flow Simulation for Modeling Thermal Runaway
Published on: March 7, 2022
4.4K
11:04Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
12.9K
相关概念视频
Potentiometry: Membrane Electrodes
302
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
302
Detergent Purification of Membrane Proteins
5.0K
Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
5.0K
