Hydrometallurgical Technology for Processing of Galvanic Sludges


The problem of processing galvanic sludges, formed as a result of neutralization of technological solutions and wastewater containing heavy non-ferrous metals is considered in this study. At present, sludges are transported to disposal area and are not used in any way. Typically, such sludges contain significant amounts of chromium and nickel, which creates environmental hazard. Investigated sludge contains up to 6,6% Ni and up to 7,4% Cr. The hydrometallurgical process to treatment of these sludges is carried out. Solutions of sulfuric acid and ammonia were used as lixiviants. It is shown that when using a solution of sulfuric acid with pH=1,5, extraction of up to 93,3% Cu, 70,2 Ni, 90,3 Zn is achieved. For selective nickel recovery sorption concentration by Lewatit TP207 is proposed.

Keywords: Galvanic sludge, hydrometallurgy leaching, nickel, ion-exchange resin

[1] Pérez-Villarejo, L., et al. (2015). Valorization and Inertization of Galvanic Sludge Waste in Clay Bricks. Applied Clay Science, vol. 105-106, pp. 89-99.

[2] Stanisavljevic, M., Krstic, I. and Zec, S. (2010). Eco-technological Process of Glass-ceramic Production from Galvanic Sludge and Aluminium Slag. Science of Sintering, vol. 42, issue 1, pp. 125-130.

[3] Ozdemir, O. D., Figen, A. K. and Piskin, S. (2011). Utilization of Galvanic Sludge as Raw Material for Production of Glass. Presented at International Conference on Chemistry and Chemical Process, IPCBEE.

[4] Stepanov, S., et al. (2016). Efficiency of Use of Galvanic Sludge in Cement Systems. Procedia Engineering, vol. 165, pp.1112-1117.

[5] Bednarik, V., Vondruska, M. and Koutny, M. (2005). Stabilization/solidification of Galvanic Sludges by Asphalt Emulsions. Journal of Hazardous Materials, vol. 122, issue 1-2, pp. 139-45.

[6] Makovskaya, O. Y. and Kostromin, K. S. (2019). Leaching of Non-ferrous Metals from Galvanic Sludges. Materials Science Forum, vol. 946, pp. 591-595.

[7] Silva, J. E., et al. (2005). Leaching Behaviour of a Galvanic Sludge in Sulphuric Acid and Ammoniacal Media. Journal of Hazardous Materials, vol. B 121, pp. 195-202.