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Recent Advances on Purification of Lactic Acid
The Chemical Record ( IF 7.0 ) Pub Date : 2020-08-07 , DOI: 10.1002/tcr.202000055
Kexin Meng 1 , Guangyu Zhang 1 , Chuanqin Ding 1 , Tongyang Zhang 1 , Hui Yan 1 , Dongpei Zhang 1 , Tianqi Fang 1 , Mengyuan Liu 1 , Zhenchao You 1 , Chaohe Yang 1 , Jian Shen 2 , Xin Jin 1
Affiliation  

With increasing interest in developing biodegradable polymers to replace fossil‐based products globally, lactic acid (LA) has been paid extensive attention due to the high environment‐compatibility of its downstream products. The mainstream efforts have been put in developing energy‐efficient conversion technologies through biological and chemical routes to synthesize LA. However, to our best knowledge, there is a lack of sufficient attention in developing effective separation technologies with high atom economics for purifying LA and derivatives. In this review, the most recent advances in purifying LA using precipitation, reactive extraction, emulsion liquid membrane, reactive distillation, molecular distillation, and membrane techniques will be discussed critically with respect to the fundamentals, flow scheme, energy efficiency, and equipment. The outcome of this article is to offer insights into implementing more atomic and energy‐efficient technologies for upgrading LA.

中文翻译:

乳酸纯化的最新进展

随着人们对开发可生物降解的聚合物以替代全球基于化石的产品的兴趣日益浓厚,由于其下游产品具有很高的环境兼容性,因此乳酸(LA)受到了广泛关注。主流努力已通过生物和化学途径开发节能转化技术以合成LA。然而,据我们所知,在开发具有高原子经济性的有效分离技术以纯化LA和衍生物时,缺乏足够的重视。在这篇综述中,将就基本原理,流程,能效和设备方面,对使用沉淀,反应萃取,乳状液膜,反应蒸馏,分子蒸馏和膜技术提纯LA的最新进展进行重要讨论。
更新日期:2020-08-07
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