Controlled adsorption at the surface of copper sulfide minerals - a way to abate the problem of environment contamination by the copper sulfide oxidation products?

• Autorzy: Nowak P. , Nastawny M. , Kozyra I. , Wegrzynowicz A.
• Języki publikacji: EN

Abstrakty

EN

Electrochemical impedance spectroscopy was used to study the adsorption of several surface active substances at the surface of non-stoichiometric copper(I) sulfide. Simultaneously the influence of the treatment of the copper sulfide by the solution of those surface active substances on the leaching rate of the sulfide in oxygenated sulfuric acid solution was investigated and correlated with the type of adsorptive bond formed between the sulfide surface and adsorbed molecules. Both chemisorption and surface precipitation may lead to the formation of a strongly bound product that prevents the dissolution of a mineral. Contrary, physical adsorption is too week to protect the surface from the attack of aggressive medium.

Słowa kluczowe

EN

copper sulfides; adsorption on minerals; corrosion of minerals; prevention of mineral corrosion

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2011
• Tom: Vol. 47
• Strony: 131--138
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Nowak P.

autor

Nastawny M.

autor

Kozyra I.

autor

Wegrzynowicz A.

• J. Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek 8, 30239 Kraków, Poland,

Bibliografia

• 1. BELZILE, N., MAKI, S., CHEN, Y.-W., GOLDSACK, D., 1997. Inhibition of pyrite oxidation by surface treatment , Sci. Total Environ. 196, 177-186.
• 2. DOYLE F.M., 1990, Acid mine drainage from sulfide ore deposits, in: Sulfide deposits – their origin and processing (P.M.J. Gray, G.J. Bowyer, J.F. Castle, D.J. Vaughan and N.A. Warner, editors), The Institution of Mining and Metallurgy, London, 301-310.
• 3. EVANGELOU, V.P., 1995. Pyrite Oxidation and its Control , CRC Press, Boca Raton.
• 4. HELIOS-RYBICKA, E., 1996. Impact of mining and metallurgical industries on the environment in Poland , Appl. Geochem., 11, 3 – 9.
• 5. HUANG, X., EVANGELOU, V. P., 1994. Suppression of pyrite oxidation rate by phosphate addition , in : Environmental Geochemistry of Sulfide Oxidation , ACS Symposium Series 550, 562-573.
• 6. JAMBOR, J.L., BLOWES, D.W., PTACEK, C.J., 2000. Mineralogy of mine wastes and strategies for remediation , in: Environmental Mineralogy, European Mineralogical Union Notes in Mineralogy : (Vaughan and Wogelius, editors), Eötvös University Press, Budapest, Vol. 2, 255 – 290.
• 7. JELLINEK, F., 1968, Sulphides , in: Inorganic Sulphur Chemistry (G. Nickless - editor), Elsevier, New York, 669 – 747.
• 8. Jiang, C.L., Wang, X.H., Parekh, B.K., 2000. Effect of sodium oleate on inhibiting pyrite oxidation , Int. J. Miner. Process., 58, 305-318.
• 9. KARGBO, D. M., ATALLAH, G., CHATTERJEE, S., 2004. Inhibition of Pyrite Oxidation by a Phospholipid in the Presence of Silicate , Environ. Sci. Technol., 38, 3432-3441.
• 10. LARGE, G.J., MACQUAKER, J., VAUGHAN, D.J., SAWLOWICZ, Z., GIZE A.P., 1995. Evidence for low-temperature alteration of sulfides in the kupferschifer copper deposits of southwestern Poland , Econ. Geol., 90, 2143-2155.
• 11. LIPKOWSKI, J., 1992. Ion and electron transfer across monolayers of organic surfactants , in: Modern Aspects of Electrochemistry , 23, 1-99.
• 12. ŁUSZCZKIEWICZ, A., 2000, Conception of the utilization of the flotation wastes from the copper ore processing in the Legnica-Głogów region , Inżynieria Mineralna (Mineral Engineering), 1, 25-35 (in Polish).
• 13. NOWAK, P., 2010. Influence of Surfactant Adsorption on the Leaching of Copper Sulfides, in: Electrochemistry in Mineral and Metal Processing VIII, ECS Transactions 28(6), (F.M. Doyle, R. Woods and G.H. Kelsall - editors), The Electrochemical Society, Pennington, USA, 143 – 153.
• 14. NOWAK, P. AND GUCWA, A., 2008. Influence of surfactant adsorption on the leaching of copper sulfides , Acta Metallurgica Slovaca, 14, 196 – 203.
• 15. NOWAK, P., KRAUS, E., POMIANOWSKI, A., 1984. The electrochemical characteristics of the galvanic corrosion of sulfide minerals in short-circuited model galvanic cells ”, Hydrometallurgy, 12, 95-110.
• 16. NOWAK, P., POMIANOWSKI, A, 1989. Surface properties of cuprous sulfide in aqueous solutions”, Colloids and Surfaces, 41,15-21.
• 17. SAND, W., JOZSA, P. – G., KOVACS, Z. – M., SĂSĂRAN, N., SCHIPPERS, A., 2007. Long-term evaluation of acid rock drainage mitigation measures in large lysimeters, Journal of Geochemical Exploration, 92, 205-211.
• 18. SHUEY R.T., 1975. Semiconducting Ore Minerals, Elsevier, New York
• 19. TWARDOWSKA, I., SZCZEPAŃSKA, J., WITCZAK, S., 1988. Influence of wastes from the coal mining industry on the aqueous environment, estimation of hazard, prediction and prevention , Prace i Studia 35, Ossolineum, Wrocław (in Polish).
• 20. VAUGHAN, D.J. AND CRAIG, J.R., 1978. Mineral Chemistry of Metal Sulphides, Cambridge University Press, Cambridge
• 21. VAUGHAN, D.J. AND WOGELIUS, R.A. (editors), 2000, Environmental Mineralogy, European Mineralogical Union Notes In Mineralogy : Vol. 2, Eötvös University Press, Budapest
• 22. WOODS, R., 1996. Chemisorption of thiols on metals and metal sulfides , in: Modern Aspects of Electrochemistry (O’M. Bockris, B. E. Conway and R. E. White, Editors), vol. 29, 401-453, Elsevier.
• 23. ZHANG, X., BORDA, M. J., SCHOONEN, M. A. A., STRONGIN, D.R., 2003. Pyrite oxidation inhibition by a cross-linked lipid coating , Geochem. Trans., 4, 8-11.