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通过复杂提取来回收乳酸的环保方法

Aybikenur Erdas¹, Mustafa Esen Marti¹

¹Department of Chemical Engineering, Konya Technical University, 42075 Konya, Turkey.

|April 22, 2024

概括

植物油作为乳酸 (LA) 恢复的绿色稀释剂具有前景. 松花油与三聚胺相结合,实现了与传统溶剂相比较的提取产量,证明了可持续的LA净化潜力.

科学领域:

绿色化学绿色化学
分离科学分离科学
生物技术是生物技术.

背景情况:

对高纯度乳酸 (LA) 的日益增长的需求需要可持续的回收方法.
传统的LA回收通常涉及能源密集型或不太环保的技术.
探索复杂提取的绿色溶剂对于可持续的生物聚合物生产至关重要.

研究的目的:

评估植物油作为有机阶段稀释剂用于乳酸 (LA) 提取.
将植物油的效率与传统稀释剂 (1-octanol) 的效率进行比较.
评估各种参数对使用植物油的LA提取产量的影响.

主要方法:

使用三聚胺 (TOA) 作为提取剂来复杂提取LA.
在有机阶段测试八种不同的植物油作为稀释剂.
研究温度,pH,LA度和TOA度对提取效率的影响.
使用NaOH从有机相中去除LA,并评估有机相的可重复使用性.

主要成果:

与其他测试的植物油相比,松花油 (SFO) 的提取效率略高.
使用SFO+TOA的提取效率与温度和pH相反相关.
效率在LA和TOA度较高时增加,达到66%的产量,SFO在1.5M LA和1.0M TOA.
使用SFO + TOA的产量与1-octanol + TOA (76%在最佳条件下) 相似,特别是在更高的LA度下.

结论:

植物油,特别是SFO,是对1-octanol作为LA提取稀释剂的可行和潜在的绿色替代品.
开发的方法实现了高LA回收 (>99%) 并证明了有机相的可重复使用性.
这项研究支持在生物聚合物应用的可持续LA净化过程中使用植物油.

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