Abstract
Problem statement: Amines as organic molecules are able to form complexes with metals ions and this is the reason why we can use them to extract metals ions from hydrometallurgical solutions. Approach: Based on that, we have investigated the extraction of Calcium and Magnesium with N,N-dioctyl-1-octammine from the mixture of elements prepared in artificial manner. We investigated the influence of HCl concentration and salts (NaCl, NaI and CH3COONa) concentration in extraction of two elements (Calcium and Magnesium) from water solutions. All extractions were done from HCl water solutions with c = 3, 6 and 9 mol L-1 and in presence of NaCl, NaI and CH3COONa salts, which we prepared in different concentrations. Results: Extraction of Calcium from NaCl solution move from 50-75%, from NaI solution 0-90% and from CH3COONa solution 37-81%. Extraction of Magnesium from NaCl solution move from 0-10%. In solution of NaI we can not extract the Magnesium and from CH3COONa solution the extraction of magnesium moves from 0-30%. Conclusion: As optimal condition to separate Calcium from Magnesium is the extraction of Calcium from HCl solution with concentration 9 mol L-1 in presence of NaI with concentration of 60 g L-1. Using these condition 90% of Calcium was in organic phase and all of magnesium remains in water phase.
Highlights
Extraction of metals with organic bases with large molecular masse is forced in the last years (Cox et al, 2004)
Based on that we have investigated the extraction of Calcium and Magnesium with N,N-dioctyl-1octanamine from mixture of elements prepared in artificial way
One exception we found that extraction of Magnesium is 30% when extraction was done in HCl solution with concentration 9 mol L−1 and in presence of sodium acetate with concentration 20 g L−1 (Fig. 4a)
Summary
Extraction of metals with organic bases with large molecular masse is forced in the last years (Cox et al, 2004). Systems that we will discuss here, are some extracted species formed as result of interactions between a neutral species or anionic metallic species in water solution and salts of any organic bases or their cation in organic or in water phase. Dioctyl-1-octanammine and N,N-dioctyl-1-octan ammonium chloride and only with N,N-dioctyl-1-octan ammonium chloride They have found that all changing factors have influence in extraction percentage of calcium and magnesium in organic phase. Kimura (1960) has done the extraction of some metals including Calcium and Magnesium, from HCl solution with concentration 0.01 mol L−1, 0.1 mol L−1 and 1 mol L−1 with di-(2-Ethylhexyl) phosphoric acid (50% in toluene).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
