مشخصات پژوهش

عنوان	The impact of uni-univalent electrolytes on (water+acetic acid+toluene) equilibria: Representation with electrolyte-NRTL model
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	LLE, Salting-out, Distribution coefficient, Electrolyte-NRTL, Binary interaction
چکیده	The presence of salts can significantly alter the (liquid + liquid) equilibrium and extraction process. In this work, a study was conducted on the (liquid + liquid) equilibria of (water + acetic acid + toluene + sodium chloride or potassium chloride) at temperatures (288.2, 298.2 and 313.2) K. This chemical system, irrespective of salt, is frequently used in (liquid + liquid) extraction investigations. The selected salt concentrations in initial aqueous solutions were (0.9 and 1.7) mol  L1. The results show that salting-out effect of the salts was significant, so that an enhancement in the acetic acid distribution coefficient was achieved within (15.6 to 66.8)% with NaCl and within (2.5 to 37.6)% with KCl. Meantime, high separation factors were found at low temperatures and low solute concentrations. The electrolyte-NRTL model was satisfactorily used to correlate the phase equilibria. In this regard for each salt, the temperature dependent binary interaction parameters between components were calculated. The predicted tie-line mole fractions give root-mean square deviation (RMSD) values of only 0.0038 and 0.0045 for the systems containing NaCl and KCl, respectively.
پژوهشگران	جواد صاین (نفر اول)، مهدی فتاحی (نفر دوم)، مریم مظفروندی (نفر سوم)