Selective recovery of valuable metals from crushed electronic waste

Z. M. Akhmetvaliyeva, N. A. Kulenova, Ya Takasaki, S. V. Mamyachenkov, О. С. Анисимова, Liadi Kolapo Mudashiru, Е. Л. Фокина, J.A. Bast

2018

Full text Open access: Gold Metadata (CSL-JSON)

DOI 10.1088/1757-899x/411/1/012011

Data confidence 70 medium

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Abstract

This research was carried out to recover valuable metals from the electronic waste (e-waste). E-waste samples were crushed and thermally activated under 450 °C within 1 hour. The optimal temperature of the thermal treatment, at which all organic phases are removed and metal's forms turned into oxides was determined. Leaching of thermally activated material using EDTA at room temperature, pH 7 for 1 hour resulted in greater than 95 % extraction of lead. Non-ferrous metals were extracted at 85 °C with a leaching solution of 2 M H 2 SO 4 which resulted in recovery of more than 98 % of copper within 3 hours.