TY - JOUR ID - 71517 TI - Thermodynamics of Extraction of Zn2+ from Sulfuric Acid Media with a Mixture of Dehpa and Mehpa JO - International Journal of Engineering JA - IJE LA - en SN - 1025-2495 AU - Sadrnezhaad, S.K. AU - Keshavarz Alamdari, Eskandar AD - Materials Science and Engineering, Sharif University of Technology AD - New Materials, MERC Y1 - 2004 PY - 2004 VL - 17 IS - 2 SP - 191 EP - 200 KW - Solvent extraction KW - zinc KW - DEHPA KW - MEHPA KW - Thermodynamics KW - Extraction Mechanism DO - N2 - Thermodynamics of extraction of Zn2+ from sulfuric acid media contacting to a mixture of DEHPA and MEHPA diluted with 80 wt% aromatic-aliphatic kerosene with a constant DEHPA to MEHPA ratio is investigated at different acidities, concentrations and temperatures. As a result, the extraction reaction is found to be endothermic with a zinc distribution factor that increases with increasing of the temperature, acidity of the solution and the concentration of the extractant. The mechanism of the extraction reaction is shown to be different for pH > 1 with that at pH UR - https://www.ije.ir/article_71517.html L1 - https://www.ije.ir/article_71517_03fa591d06401715e9b97ae074d48ef6.pdf ER -