کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
643953 | 884400 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetics of nickel(II) extraction by 2-ethylhexanal oxime in ammonium nitrate solutions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Kinetics of nickel(II) extraction by 2-ethylhexanal oxime (EHO) has been investigated in a homothetic cell (Rushton cell) from ammonium solutions. The kinetic study was carried out with a stirring speed fast enough to eliminate the diffusion limitation. The chemical regime can then be assumed and the kinetic result can be used to determine the reaction mechanism. Thus, a kinetic mechanism has been suggested and a limiting step found. Influence of pH and the concentrations of NH4NO3 and EHO on rate have been investigated and results suggest that the limiting step is an interfacial reaction between a molecule of EHO monomer (HOx) and the adsorbed complex Ni(Ox)(H2O)5ad+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 60, Issue 2, 20 April 2008, Pages 120–127
Journal: Separation and Purification Technology - Volume 60, Issue 2, 20 April 2008, Pages 120–127
نویسندگان
A. Buch, M. Stambouli, D. Pareau,