SEEU Review vol. 5 Nr. 2 (pdf) - South East European University

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Fatmir Faiku, Haxhere Faiku, Murtezan Ismaili, Arben Haziri and Sevdije Govori Nickel in limited amounts is extracted from the KCl solutions whereby the extraction percentage reaches the value 4.2% (table 2 and figure 1a,b,c). Nickel is not extracted from the KI solutions (table 3 and figure 2a,b,c). 100 Fe 100 Fe 100 Fe % of extraction 80 60 40 Cu % of extraction 80 60 40 Cu % of extraction 80 60 40 Cu 20 0 Ni 2 4 6 c(HCl) 20 0 Ni 2 4 6 c(HCl) 20 0 Ni 2 4 6 c(HCl) Figure 3. Extraction curves of elements with N,N-dioctyl-1-octanamine expressed as a function of concentration of HCl and NaAc: a) (NaAc)=50 g dm -3 , b) (NaAc)=75 g dm -3 , c) (NaAc)=100 g dm -3 Conclusion Liquid extraction of anion complexes of metals by applying organic solutions offers the possibility of selective separation of elements. This is simple and can applied for separation of metallic ions present in traces, and also in the macro- separating of metal ions. The organic solutions applied in extraction have shown the suitability and they also possess desirable characteristics like: high solubility in applied organic solvent (methyl isobutyl ketone), low solubility in the aqueous acid solutions, they can be dissolved also in other suitable solvents, they can be applied in extraction directly without any previous conversion in another form, it can be done the multielement extraction and these are not costly. By applying amines in the extraction of the researched elements it is obvious that the extracting phenomenon and reactions of different parameters, very often are similar for both chemical reagents (tri-noctylamine). But apart from the similarities, there are big differences, which suggests the extractive specification in relation to applied reagents, which in turn is linked with the conditions that the extraction of elements should take place in. This is what can make it possible to develop the extraction system. 220
<strong>SEEU</strong> <strong>Review</strong> Volume 5, No. 2, 2009 References 1. F. Faiku, M. Berisha, N. Daci and M. Paçarizi, 1 st Symposium of Chemistry and Environment 2007, 167. 2. F. Faiku, M. Berisha, N. Daci and M. Paçarizi, 1 st Symposium of Chemistry and Environment 2007, 168. 3. M. Adams, Mat. Eng. 1994, 7, 1165-1177. 4. B. Dreisinger and R. Shaw, U. S. Patent. 1999, 5, 948. 5. J. Gula, B. Dreisinger and P. Horwitz, U. S. Patent. 1999, 5, 842. 6. C. Lukey, T. Huntington, and C. Shallcross, Hydrometallurgy 1999, 53, 233-234. 7. J. Rydberg, C. Musikas and R. Choppin, Principles and Practices of Solvent Extraction 1992, 57-65. 8. M. Oliazadeh, J. Wu, H. Huang and M. Alfantaz, International Symposium On Hydrometallurgy In Honour Of Professor Ian Ritchie 2003, 145. 9. C. Coleman, K. Brown, G. Moore and D. Crouse, Ind. Eng. Chem. 1968, 50, 1756. 10. C. Coleman, A. Blake, and K. Brown, Talanta 1972, 19, 297. 11. F. Faiku and M. Berisha, The Albanian Journal Of Natural And Technical Sciences (AJNTS) 2006, 19, 74-84. 12. H. Zou and J. Chen, Hydrometallurgy 1995, 16, 61. 13. M. Irving, D. Damodaran, Anal. Chim. Acta 1971, 53, 267. 14. J. Brothers, R. Hart and G. Mathers, J. Inorg. Nucl. Chem. 1971, 7, 85. 15. Standard Methods of Chemical Analysis, Vol. IIA, Sixth Edition 1975. 221
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