[1-Ethyl-2,3-dimethyl-imidazolium][ethylsulfate]-based aqueous two phase systems: New experimental data and modeling
作者： Aliakbar Paraj , Ali Haghtalab , Babak Mokhtarani
DOI: 10.1016/J.FLUID.2014.09.001
关键词:
摘要: In this work, a new type of ionic-liquid-based aqueous two phase systems namely [1-ethyl-2,3-dimethylimidazolium][ethylsulfate] ([emmim][eSO4])–salt is introduced and investigated. Effect various inorganic salts Na2CO3, Na2SO4 K2HPO4 on the forming ability [emmim][eSO4] at different temperature (T/K = 288.15, 298.15 313.15) are assessed. The results indicate that effect in comparison with salt negligible to separation [emmim][eSO4]-based systems, follows order Na2CO3 ≥ Na2SO4 > K2HPO4. Moreover, experimental data successfully correlated using thermodynamic model based symmetrical activity coefficient an overall average relative deviation (ARD) 0.0710. model, long-range contribution accounted by Pitzer–Debye–Huckel (PDH) equation while short-range considered nonelectrolyte Wilson non-randomness-factor (Wilson-NRF) model. result correlation shows applied could correlate behavior ionic liquid-based systems.
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