Browsing by Author "Ungerer, Maria Johanna"
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Density functional theory study with and without COSMO of H2SO4 reactions in an aqueous environment for metal extraction
Ungerer, Maria Johanna; Van Sittert, Cornelia Gertina Catharina Elizabeth; Van der Westhuizen, Derik Jacobus; Krieg, Henning Manfred (Wiley, 2019)In a recent study investigating the suitability of solvent extraction (SX) for the separation of Ta and Nb, it was shown that speciation data would be required to help explain the data obtained. As traditional speciation ... -
Separation of tantalum and niobium by solvent extraction
Ungerer, Maria Johanna (North-West University, 2012)Niobium (Nb) and tantalum (Ta) are found in the same group (VB) of the periodic table of elements and therefore have similar chemical properties, which is the reason why they are difficult to separate. They are usually ...