کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
642387 1457034 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Third phase formation of neodymium (III) and nitric acid in unsymmetrical N,N-di-2-ethylhexyl-N′,N′-dioctyldiglycolamide
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Third phase formation of neodymium (III) and nitric acid in unsymmetrical N,N-di-2-ethylhexyl-N′,N′-dioctyldiglycolamide
چکیده انگلیسی

The third phase formation of neodymium (III) and nitric acid in N,N-di-2-ethylhexyl-N′,N′-di-octyl-3-oxapentane-1,5-diamide (DEHDODGA) was studied. The limiting organic concentration (LOC) and critical aqueous concentration (CAC) of nitric acid and neodymium (III) were determined as a function of various parameters such as aqueous phase acidity, extractant concentration, temperature and the nature of diluent. The influence of phase modifier, N,N-di-hexyloctanamide (DHOA) on the third phase formation behaviour was studied at different temperatures. The LOC of Nd (III) in a solution of DEHDODGA in n-dodecane (n-DD) increased with increasing temperature, concentrations of extractant and phase modifier, and decreased with increase of aqueous phase acidity and alkyl chain length of the diluent. The concentration of DHOA needed to prevent the third phase formation during minor actinide partitioning from high-level liquid waste was optimised.


► New unsymmetrical diglycolamide, di-ethylhexyl-di-octyl-diglycolamide (DEHDODGA).
► Third phase formation of neodymium and nitric acid.
► Limiting organic concentration.
► Effect of various parameters.
► Optimization of organic modifier for minor actinide partitioning.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 85, 2 February 2012, Pages 96–100
نویسندگان
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