标题：Salt effect on liquid–liquid equilibria of tetrahydrofuran/water/5-hydroxymethylfurfural systems
作者：Xie, Yujiao ;Yu, Fangyong ;Wang, Yong ;He, Xianglei ;Zhou, Shengren ;Cui, Hongyou
作者机构：[Xie, Yujiao ;Yu, Fangyong ;Wang, Yong ;He, Xianglei ;Zhou, Shengren ;Cui, Hongyou ] School of Chemistry and Chemical Engineering, Shandong University 更多
来源：Fluid Phase Equilibria
摘要：Salts strongly affect the phase equilibria of aqueous systems in biotechnological processes. In this work, the influence of salt on the performance of extracting 5-hydroxymethylfurfural (HMF) from aqueous media using tetrahydrofuran (THF) was investigated. The liquid–liquid equilibria (LLE) of ternary (THF/water/MCl, M = Li, Na or K) and quaternary (THF/water/HMF/MCl) systems were determined at 303.15 K and atmospheric pressure. The salting-out effects of LiCl, NaCl, and KCl were studied at different concentrations within their solubility limits. From the experimental LLE of the THF/water/MCl, it was found that THF was salted out from the aqueous phase upon addition of salt. Based on the LLE of THF/water/HMF/MCl, the partition coefficient of HMF and selectivity were determined. Finally, the experimental equilibrium data of the quaternary systems were correlated via the nonrandom two-liquid (NRTL) model, and the calculation results showed good agreement with the experimental data.
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