Fluid Phase Equilibria - sourcedb.ipe.cas.cn.pdfVIP

Fluid Phase Equilibria 278 (2009) 103–108 Contents lists available at ScienceDirect Fluid Phase Equilibria j o u rn al h omepage: w w w. elsev /locate/fluid Equilibrium study on reactive extraction of propionic acid with N1923 in different diluents Kang Wang a,b , Zhidong Chang a,∗ , Yinchen Ma a,b , Chao Lei a,b , Shengchao Jin a,b , Yong Wu a,b , Iram Mahmood a,b , Chao Hua a , Huizhou Liu a,∗ a Key Laboratory of Green Processing Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China b Graduate University of the Chinese Academy of Sciences, Beijing 100049, China a r t i c l e i n f o a b s t r a c t Article history: The equilibrium for the propionic acid extraction by N1923 in three diluents, represented as proton- Received 25 August 2008 donator (n-octanol), polar (butyl acetate), inert (hexane) types, have been studied. The diluents had a Received in revised form 15 January 2009 significant influence on the equilibrium. The loading ratio, Z, was employed to investigate the effect of Accepted 18 January 2009 diluents on the extraction efficiency. When Zexp was lower than 1, N1923 extraction followed the order: Available online 2 February 2009 n-octanol butyl acetate hexane. When the loading ratio Zexp was higher than 1, the order changed to: butyl acetate hexane n-octanol. Equilibrium complex