Study of Some of the Environmental Impact Parameters on the Release of Cadmium from Electronic Waste in Aquatic Environments

Electronic and electrical wastes are special types of wastes, the main components of which include capacitors, transistors, ICs, electronic circuits, cathode and anode components have toxic and pathogenic properties and are stable in the environment and even in body of animal, are corrosive to installations and equipment The purpose of this study is to investigate and identify the effective factors in the liberation of metals, in particular cadmium, in the surrounding environment. Accordingly, the effect of different factors such as temperature, pH, humic acid and time on the release of cadmium from these wastes to aquatic environments has been studied. For this purpose, the selected parts were analyzed and examined. The results indicate that in the aqueous medium, the amount of cadmium penetration in the very acidic and very alkaline pH, the release rate increases. Also, in the aqueous medium, the increase in temperature increases the penetration of cadmium in the environment, and the effect of the contact time parameter is also proportional to the pH variation.