液-液萃取中界面乳化现象的研究

本文以含酸生物发酵液在萃取过程中出现的界面乳化现象出发,对乳化现象进行理论剖析,从而发现了在发酵液中存在着引起乳化的表面活性物质,并依此解决了影响萃取过程进行的乳化问题.对某些萃取剂的表面活性现象进行探讨并采用显微摄影技术揭示W/O和O/W两类乳化现象.还对乳化、第三相和界面污物这三种在萃取过程中经常出现的界面现象进行了讨论.

Interfacial Emulsification in Liquid-Liquid Extraction

Interfacial emulsification often occurs in the extraction of biological fermentation liquors containing organic acids. As a result of theoretical analysis and experimental work, certain substances present in the fermentation liquor have been identified as the cause leading W/O emulsions. Emulsification caused by surface activity of certain extractants was also examined by using microphotography for both W/O and 0/W emulsions, and a general discussion was then presented on the three phenomena of emulsification, third phase formation and interfacial contamination in extraction processes.