增强的稀土元素回收与交叉链接的甲基-兰坦化结合在基于泡的分离
Luis E Ortuno Macias1, Honghu Zhang2, Benjamin M Ocko2
1Department of Chemical Engineering, The City College of New York, New York, NY, 10031, USA; The Benjamin Levich Institute for PhysicoChemical Hydrodynamics, The City College of New York, New York, NY, 10031, USA.
Journal of colloid and interface science
|September 13, 2024
概括
甲增强了与化物结合的膜,以改善稀土元素 (REE) 的回收. 这种交叉连接方法稳定了接口层,优化了基于泡的分离过程.
科学领域:
- 生物分子工程是生物分子工程.
- 材料科学是一种材料科学.
- 化学工程是化学工程的组成部分.
背景情况:
- 兰化物结合标签 (LBT) 可以选择性地结合兰化物离子,为能源密集的稀土元素 (REE) 分离工艺提供可持续的替代方案.
- 这些可以吸附到空气/水界面,从而使基于泡的REE回收成为可能.
- 甲是一种交叉结合剂,可能会在接口处稳定这些膜.
研究的目的:
- 调查谷氨基用于增强与胺结合的LBT的吸附和界面稳定.
- 评估甲基交联对REE回收界面膜稳定性和性能的影响.
主要方法:
- 用吊滴压力计测量了表面活动.
- 界面膜的稳定性通过扩张和剪切表面风学进行评估.
- 使用X射线反射率和近完全反射的X射线光度来确定表面密度和分子排列.
主要成果:
- 甲基交叉链接显著增强了甲酸对空气-水接口的吸附,形成更厚的接口结构.
- 交叉连接的薄膜表现出改善的扩张和剪切界面的质性质.
- 甲有效地稳定了接口膜,促进了REE提取.
结论:
- 甲基作为一个有效的交叉链接器,以提高 LBT 的性能在基于泡的 REE 恢复.
- 这种方法为传统泡稳定剂提供了可行的替代方案,优化了基于生物分子的REE提取.
- 这项研究展示了一种新的方法,用于整合甲以改善界面膜的特性,以有效地分离REE.
相关概念视频
Precipitation and Co-precipitation
Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
Extraction: Advanced Methods
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 formed in...
Microbial Leaching
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
Downstream Processing
Downstream processing begins once fermentation is complete and involves a series of steps to recover and purify products such as acids, vitamins, antibiotics, or proteins.Cell HarvestingFor example, for intracellular protein-based products, the first step is harvesting the cells. This is typically achieved using centrifugation or filtration to separate the cells from the liquid phase.Cell Disruption for Intracellular ProductsIf the target product is intracellular, the harvested cells must be...


