矿物酸共同提取在乳酸的反应性提取使用蒂摩尔 - 孟托尔深层欧性溶剂作为绿色修饰剂的矿物酸共同提取
Paul Demmelmayer1, Marija Ćosić1, Marlene Kienberger1
1Institute of Chemical Engineering and Environmental Technology, Graz University of Technology, Inffeldgasse 25/C, 8010 Graz, Austria.
Molecules (Basel, Switzerland)
|April 27, 2024
概括
这项研究探讨了从发酵中提取碳酸的绿色溶剂. 三-n-octylamine有效地提取乳酸,但也共同提取矿物酸,而三酸氧化物提供更高的选择性.
科学领域:
- 绿色化学和可持续的分离过程.
- 化学工程和过程优化.
- 生物技术和发酵产品回收.
背景情况:
- 传统的分离碳酸盐的方法,如沉乳酸,对环境造成了巨大的负担.
- 反应性液体-液体提取 (RLL) 为碳酸回收提供了一个可持续的替代方案.
- 天然深层环生溶剂 (NaDES) 是有希望的绿色溶剂,可以提高RLL的可持续性.
研究的目的:
- 使用NaDES研究乳酸RLL期间矿物酸的共同提取.
- 评估不同溶剂相对乳酸提取的选择性和效率的影响.
- 评估RLL过程中NaDES的可持续性,用于碳酸回收.
主要方法:
- 在乳酸提取和逆提取过程中对盐酸,酸,硫酸和酸的联合提取进行系统检查.
- 使用溶剂阶段的tri-n-octylamine,trioctylphosphine氧化物,或三酸盐稀释在一个thymol-menthol深溶解剂.
- 使用稀释剂摇摆逆提取,p-cymene作为抗溶剂,水作为接收阶段.
主要成果:
- 三-n-octylamine显示出高乳酸提取效率 (高达29.8%),但也显著的矿物酸共同提取 (高达50.9%).
- 三聚氨酸氧化物显示出较低的乳酸提取 (5.94%) 但优越的选择性与最小的矿物酸共同提取 (0.135%).
- 酸的共同提取率最高,而酸的共同提取率在所研究的矿物酸中最低.
结论:
- 溶剂相组成和矿物酸的类型极大地影响联合提取和最终产品的纯度.
- 作为修饰剂使用天然的深溶性溶剂显著提高了液体-液体提取过程的可持续性.
- 优化溶剂系统对于从发酵中有效和有选择地回收碳酸非常重要.
相关概念视频
Extraction: Advanced Methods
446
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...
446
Leveling Effect and Non-Aqueous Acid-Base Solutions
8.1K
This lesson defines the leveling effect in acidic and basic solutions and its role in aqueous and non-aqueous solutions. It is essential to understand the competing nature of various species in a chemical system.
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
The Leveling Effect of a Solvent
A generic acid (HA) reacts with the generic base (B-) to yield the corresponding conjugate base (A-) and conjugate acid (HB):
8.1K


