Impact of ovalbumin on pyrite flotation in the absence and presence of metal ions

• Autorzy: Guler T. , Sahbudak K. , Akdemir U. , Cetinkaya S.

Identyfikatory

DOI

10.5277/ppmp140103

• Języki publikacji: EN

Abstrakty

EN

Recovery of gangue pyrite and its accidental activation are vital issues in flotation of complex sulfide ores. This work was performed by cyclic voltammetry (CV) and flotation tests to elucidate applicability of ovalbumin (OVA) as depressant for pyrite. The synergetic effect of metal ions in addition to its possible use in case of accidental activation by metal ions. CV tests stated that OVA adsorbed irreversibly on pyrite, and restricted electron transfer up to moderately oxidizing potentials due to electrostatic interaction together with weak hydrophobic interactions. At highly oxidizing potentials, adsorption occurred through electrochemical mechanisms through formation of metal-OVA chelates. Rate of pyrite depression with OVA was found to be potential dependent reaching its peak point around moderately oxidizing potentials both in absence and presence of metal ions. Electrochemically active metals display synergetic effect with OVA on pyrite depression, whereas noble metals activate pyrite and reduced depressing potency of OVA.

Słowa kluczowe

EN

pyrite; ovalbumin; metal ion; flotation; redox potential

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2014
• Tom: Vol. 50, iss. 1
• Strony: 31--40
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Guler T.

• Mugla Sitki Kocman University, Mining Eng. Dept., Mugla, Turkey

autor

Sahbudak K.

• Cumhuriyet University, Metallurgical and Materials Eng. Dept., Sivas, Turkey

autor

Akdemir U.

• Cumhuriyet University, Mining Eng. Dept., Sivas, Turkey

autor

Cetinkaya S.

• Cumhuriyet University, Chemical Eng. Dept., Sivas, Turkey

Bibliografia

• 1. BASTRZYK A., POLOWCZYK I., SZELAG E., SADOWSKI Z., 2008, The Effect of Protein-Surfactant Interaction on Magnesite Rock Flotation, Physicochem. Probl. Miner. Process. 42, 261–269.
• 2. CHANDRA A.P., GERSON A.R., 2009, A Review of the Fundamental Studies of the Copper Activation Mechanisms for Selective Flotation of the Sulfide Minerals, Sphalerite and Pyrite, Adv. Colloid Interf. Sci. 145, 97–110.
• 3. EKMEKCI Z., DEMIREL H., 1997, Effect of Galvanic Interaction on Collectorless Flotation Behaviour of Chalcopyrite and Pyrite, Int. J. Miner. Process., 52, 31–48.
• 4. FOTHERGILL L.A., FOTHERGILL J.E., 1970, Thiol and Disulphide Contents of Hen Ovalbumin C - Terminal Sequence and Location of Disulphide Bond, Biochem. J. 116, 555–561.
• 5. GULER T., 2012. Galena oxidation in alkaline condition, 13th International Mineral Processing Symposium, Bodrum, Turkey, 239–246.
• 6. GULER T., ŞAHBUDAK K., ÇETINKAYA S., AKDEMIR U., 2013, An Electrochemical Study on Pyrite-Ovalbumin Interaction in Relation to Flotation, Trans. Nonferrous Met. Soc. China, accepted for publication.
• 7. JANSSON E., TENGVALL P., 2004, Adsorption of Albumin and IgG to Porous and Smooth Titanium, Colloids Surf. B, 35, 45–51.
• 8. JIANG C.L., WANG X.H., PAREKH B.K., LEONARD J.W., 1998, The Surface and Solution Chemistry of Pyrite Flotation with Xanthate in the Presence of Iron Ions, Coll. Surf. A: Physicochem. Eng. Aspects, 136, 51–62.
• 9. KOCABAG D., GULER T., 2008, A Comparative Evaluation of the Response of Platinum and Mineral Electrodes in Sulfide Mineral Pulps, Int. J. Miner. Process. 87, 51–59.
• 10. LIU J.S., WANG Z.H., LI B.M., ZHANG Y.H., 2006, Interaction between Pyrite and Cysteine, Trans. Nonferrous Met. Soc. China, 16, 943–946.
• 11. MARUYAMA T., MATSUSHITA H., SHIMADA Y., KAMATA I., HANAKI M., SONOKAWA S., KAMIYA N., GOTO M., 2007, Proteins and Protein-Rich Biomass as Environmentally Friendly Adsorbents Selected for Precious Metal Ions, Envir. Sci. Technol., 41, 1359–1364.
• 12. NAKANISHI K., SAKIYAMA T., IMAMURA K., 2001, On the Adsorption of Proteins on Solid Surfaces, a Common but very Complicated Phenomenon, J. Biosci. Bioeng. 91, 233–244.
• 13. NAVA J.L., OROPEZA M.T., GONZÁLEZ I., 2002, Electrochemical Characterisation of Sulfur Species Formed During Anodic Dissolution of Galena Concentrate in Perchlorate Medium at pH 0, Electrochim. Acta, 47, 1513–1525.
• 14. PARIDA S.K., DASH S., PATEL S., MISHRA B.K., 2006, Adsorption of Organic Molecules on Silica Surface, Adv. Colloid Interf. Sci. 121, 77–110.
• 15. PENG Y., WANG B., GERSON A., 2012, The Effect of Electrochemical Potential on the Activation of Pyrite by Copper and Lead Ions during Grinding, Int. J. Miner. Process. 102–103, 141–149.
• 16. ROJAS-CHAPANA J.A., TRIBUTSCH H., 2001, Biochemistry of Sulfur Extraction in Bio-Corrosion of Pyrite by Thiobacillus Ferrooxidans, Hydrometallurgy, 59, 291–300.
• 17. WEISENER C., GERSON A., 2000, Cu(II) Adsorption Mechanism on Pyrite: An XAFS and XPS Study, Surface Interf. Analysis, 30, 454–458.
• 18. YING P., VIANA A.S., ABRANTES L.M., JIN G., 2004, Adsorption of Human Serum Albumin onto Gold: A Combined Electrochemical and Ellipsometric Study, J. Colloid Interf. Sci. 279, 95–99.