Abstract

In this current review article, a significant number of published articles were reviewed in order to provide comprehensive literature information about lactic acid (LA) and its various separation techniques. A rapid growth in the requirement of biodegradable polymers (such as polylactic acid) which are frequently used as an alternative for both manufacturing of conventional based plastic commodity materials and new materials of pertinent applications are continuously drawing ample amount of attention for the replacement of previously existing various LA separation techniques. Significant advancements are also progressively going on in the commercial applications (food as well as non-food industries) of LA. Till date, most of the LA producers use only the conventional method i.e. precipitation method which is costly and environmentally un-favourable. At present, emulsion liquid membrane (ELM) based separation technique is known as one of the most attractive and prominent technique of LA extraction from aqueous solution along with the higher extraction efficiency, low energy and chemical consumption, simplicity, and competitiveness than the other existing techniques. ELM-assisted extraction technique is one of the rapid developing technology in the area of separation and purification technology. This current literature survey will be very useful in the view of detail study of LA (its methods (chemical as well as fermentation) of production, current & commercial applications, and pertinent properties) and in the selection of its appropriate separation technique. In this review, a promising technique in the separation process called ELM along with its current advances is proposed for LA separation from the dilute aqueous solutions of the various fermentation-based industries.

中文翻译：

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乳酸及其分离纯化技术综述

摘要

在当前的这篇综述文章中，对大量已发表的文章进行了综述，以提供有关乳酸（LA）及其各种分离技术的综合文献信息。对可生物降解的聚合物（例如聚乳酸）的需求迅速增长，这种可生物降解的聚合物经常被用作制造常规塑料原料和相关应用的新材料的替代品，从而不断吸引着大量的注意力来替代以前存在的塑料各种洛杉矶分离技术。洛杉矶的商业应用（食品和非食品行业）也正在逐步取得重大进展。到目前为止，大多数洛杉矶生产商仅使用常规方法，即 沉淀法昂贵且对环境不利。目前，基于乳化液膜（ELM）的分离技术是从水溶液中提取LA最具吸引力和最突出的技术之一，并且具有比其他现有技术更高的提取效率，较低的能源和化学消耗，简便性和竞争力。技术。ELM辅助萃取技术是分离纯化技术领域中发展迅速的技术之一。鉴于对LA（生产，当前和商业应用以及相关特性的方法（化学方法和发酵方法）的详细研究）以及选择合适的分离技术的观点，这项当前的文献调查将非常有用。在这篇评论中