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

Metalurgija

article

Zh. Shoshay¹  M. A. Sadenova¹  M. M. Suyundikov²  R. V. Sapinov²  P. S. Varbanov³  D. R. Absolyamova² 

[1] D. Serikbayev East Kazakhstan technical university;Toraighyrov University;Sustainable Process Integration Laboratory – SPIL, NETME Centre, Faculty of Mechanical Engineering, Brno University of Technology - VUT

关键词: extraction;    gold;    electronic waste;    ultrasound;    thiourea;   

学科分类：核物理和高能物理

来源: Hrvatsko Metalursko Drustvo

【 摘 要 】

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.

【 授权许可】

CC BY