چکیده مقاله
The phase diagrams and compositions of coexisting phases have been determined for aqueous two phase systems containing poly propylene glycol with average molecular weight of 425 and potassium phosphate at various pH of 5 32, 6 13, 6 79, 7 36 and 7 91 The effect of pH on the salting out effect of poly propylene glycol by phosphate has been studied It was found that, an increasing in pH caused the expansion of two phase area; while, for the salt rich region, expansion of the two phase area was observed with increase in the pH It was also observed that the slope of all equilibrium tie lines increased with increasing pH Furthermore, it was found that, Increasing pH also increases the concentration of PPG in the polymer rich phase, resulting in a higher difference in PPG and phosphate concentrations between the top and bottom phases
کلیدواژهها
نویسندگان
Alireza baharvand
Ph D Student Department of Chemical Engineering Faculty of Engineering, Central Tehran Branch, Islamic Azad University Tehran, Iran
Hussein sakhaeinia
Assistant Professor Department of Chemical Engineering , Faculty of Engineering, Central Tehran Branch, Islamic Azad University Tehran, Iran
شیوه ارجاع
baharvand, Alireza and sakhaeinia, Hussein,1398,Equilibrium Phase Behavior of Poly(propylene glycol) + Potassium Phosphate + Water Two-Phase Systems at Various pH,The 5th International Conference on Science & Technology with Sustainable development approach,Shiraz
ارائهشده در
مجموعه مقالات پنجمین همایش بین المللی علوم و تکنولوژی با رویکرد توسعه پایدار1 شهریور 1398 · شیراز