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Extraction of Ca(II) and Mg(II) from Hydrochloric Acid Solutions by N,N-Dioctyl-1-Octanamine in Methyl Isobutyl Ketone

Author(s): Fatmir Faiku | Arben I. Haziri | Haxhere Faiku

Journal: American Journal of Applied Sciences
ISSN 1546-9239

Volume: 7;
Issue: 8;
Start page: 1043;
Date: 2010;
Original page

Keywords: Name of Keyword | Product design | eco-efficiency | TRIZ | TRIZEE | Extraction | calcium | magnesium | N | N-dioctyl-1-octamine | organic phase | aqueous phase

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.
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