Separation of glycolic acid from glycolonitrile hydrolysate by reactive extraction with tri-n-octylamine

@article{citeulike:1779268, abstract = {The extraction of glycolic acid from an aqueous glycolonitrile hydrolysate with tri-n-octylamine (TOA) in diluents of 1-octanol and kerosene was investigated in this article. The influences of TOA concentration, extraction temperature and phase ratio, O/W (volume ratio of organic phase to aqueous phase) on the acid distribution coefficient and loading factor of TOA were measured. The liquid-liquid equilibrium data of glycolic acid distributed between the extract phase and the raffinate phase were determined, and correlated with a model developed from the mass action law and suitable assumptions. Additionally, the acid loaded extractants were regenerated by using pure water as the back-extractant. The results show that lower temperature is beneficial to the extraction of glycolic acid from the hydrolysate, while higher temperature and phase ratio (O/W) are favorable to the back-extraction.}, author = {Yunhai, Shi and Houyong, Sun and Deming, Lu and Qinghua, Le and Dexing, Chen and Yongchuan, Zhou }, citeulike-article-id = {1779268}, doi = {http://dx.doi.org/10.1016/j.seppur.2005.08.002}, journal = {Separation and Purification Technology}, keywords = {equilibrium, extraction, liquid, reactive}, month = {April}, number = {1}, pages = {20--26}, posted-at = {2007-10-17 11:44:30}, priority = {3}, title = {Separation of glycolic acid from glycolonitrile hydrolysate by reactive extraction with tri-n-octylamine}, url = {http://dx.doi.org/10.1016/j.seppur.2005.08.002}, volume = {49}, year = {2006} }

TY - JOUR ID - citeulike:1779268 L3 - citeulike-article-id:1779268 TI - Separation of glycolic acid from glycolonitrile hydrolysate by reactive extraction with tri-n-octylamine JF - Separation and Purification Technology VL - 49 IS - 1 SP - 20 EP - 26 N2 - The extraction of glycolic acid from an aqueous glycolonitrile hydrolysate with tri-n-octylamine (TOA) in diluents of 1-octanol and kerosene was investigated in this article. The influences of TOA concentration, extraction temperature and phase ratio, O/W (volume ratio of organic phase to aqueous phase) on the acid distribution coefficient and loading factor of TOA were measured. The liquid-liquid equilibrium data of glycolic acid distributed between the extract phase and the raffinate phase were determined, and correlated with a model developed from the mass action law and suitable assumptions. Additionally, the acid loaded extractants were regenerated by using pure water as the back-extractant. The results show that lower temperature is beneficial to the extraction of glycolic acid from the hydrolysate, while higher temperature and phase ratio (O/W) are favorable to the back-extraction. KW - equilibrium KW - extraction KW - liquid KW - reactive AU - Yunhai, Shi AU - Houyong, Sun AU - Deming, Lu AU - Qinghua, Le AU - Dexing, Chen AU - Yongchuan, Zhou PY - 2006/04/01/ UR - http://dx.doi.org/10.1016/j.seppur.2005.08.002 ER -