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The electro and electronic industry has been increasing gradually, causing an increase in the generation of waste of electrical and electronic equipment, which have several components that have added value such as - for example - gold. Aiming at environmental protection, measures are sought for the recovery of these metals, through tests with several technologies such as leaching. This consists in separating the component from the solid part, transferring it to the liquid part, using acids. Itdoi:10.31686/ijier.vol8.iss8.2531 fatcat:6xkcucbhfbgexjdluwz7f6fw3a