Metallurgy, Vol. 62 No. 2, 2023.
Original scientific paper
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
Abstract
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.
Keywords
extraction; gold; electronic waste; ultrasound; thiourea
Hrčak ID:
290058
URI
Publication date:
3.4.2023.
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