Izvorni znanstveni članak

Investigation of ultrasonic influence on the kinetics of extracting gold from electronic waste

Zh. Shoshay ; D. Serikbayev East Kazakhstan technical university, Kazakhstan
M. A. Sadenova ; D. Serikbayev East Kazakhstan technical university, Kazakhstan
M. M. Suyundikov ; Toraighyrov University, Pavlodar, Kazakhstan
R. V. Sapinov ; Toraighyrov University, Pavlodar, Kazakhstan
P. S. Varbanov ; Sustainable Process Integration Laboratory – SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology - VUT, Brno, Czech Republic
D. R. Absolyamova ; Toraighyrov University, Pavlodar, Kazakhstan

Sažetak

In this paper the effect of ultrasonic treatment on the apparent activation energy of gold leaching from e-waste in aqueous thiourea solution was studied. The leaching was carried out under conventional conditions and under ultrasonic treatment. The leaching in both cases was carried out at 25 °C, 35 °C, 45 °C and 60 °C. The apparent activation energy using ultrasonic activation decreases. In both cases the process of gold leaching from e-waste proceeds in the diffusion region. Thus, ultrasonic intensification is a means of increasing the efficiency of hydrometallurgical processes of e-waste processing by reducing the activation energy of the process.

Ključne riječi

extraction; gold; electronic waste; ultrasound; thiourea

Hrčak ID:

290058

URI

https://hrcak.srce.hr/290058

Datum izdavanja:

3.4.2023.

Posjeta: 775 *