کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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641854 | 1457011 | 2013 | 5 صفحه PDF | دانلود رایگان |
The selective partition of KCl and NH4Cl by aqueous two-phase systems (ATPSs) and the phase diagrams of water–KCl/NH4Cl–1-propanol ternary systems at 298.15 K have been studied. Based on the differences of several regions for the two ternary systems, binodal curves of water–KCl–NH4Cl–1-propanol quaternary systems were determined at different temperatures and different molar ratios of KCl and NH4Cl. In the aqueous two-phase area of the water–KCl–NH4Cl–1-propanol system, the influence of several experimental parameters, such as temperature, the initial concentration of 1-propanol, KCl, NH4Cl and the stock-still time on the separation factor of KCl and NH4Cl were investigated. The experimental results showed that the increase in the concentration of 1-propanol, KCl or NH4Cl favored the separation of KCl and NH4Cl. The experimental maximum separation factor was obtained at 313.15 K when the stock-still time was 4 h. The ATPSs has a potential application in the selective partition of KCl and NH4Cl.
The ternary phase diagram for water–KCl/NH4Cl–1-proponal at 298.15 K. Separation KCl and NH4Cl in the liquid–liquid area of the aqueous two-phase systems.Figure optionsDownload as PowerPoint slideHighlights
► The ternary systems H2O–KCl/NH4Cl–1-propanol at 298 K were tested.
► Different binodal curves of H2O–KCl–NH4Cl–1-propanol were first discussed.
► Increasing the concentration of 1-propanol favored the separation of KCl and NH4Cl.
► Increasing the concentration of KCl, NH4Cl favored the separation of KCl and NH4Cl.
► Experimental maximum separation factor was obtained at 313 K when still for 4 h.
Journal: Separation and Purification Technology - Volume 108, 19 April 2013, Pages 1–5