Investigation of Factors Affecting the Diffusion of cadmium from Electronic Waste In soil environments

Subject Areas :

homan Bahmanpour ¹ (استادیارگروه محیط زیست، دانشکده فنی و مهندسی، واحد شاهرود، دانشگاه آزاد اسلامی، شاهرود، ایران)

Received: 2019-03-14 Accepted : 2019-03-14 Published : 2019-02-20

Keywords: pH, Cadmium, Heavy metals, Electronic waste, Humic compounds, Earth environment,

Abstract :

Electronic and electrical wastes are special types of wastes whose main components include capacitors, transistors, ICs, electronic circuits, cathode and anode components, and have toxicity, pathogenicity and stability in the environment and even in the corpuscles, corrosive installations and Equipment and the like. Accordingly, the purpose of this study is to investigate and identify the effective factors in the liberation of these metals and especially the cadmium element in the surrounding environment. To investigate this, the effect of different factors such as temperature, pH, HMC and time on the release of cadmium from these wastes to soil environments has been studied. For this purpose, the selected parts were analyzed and examined. The results indicate that in the soil environment, the level of cadmium penetration in very acidic and very alkaline pH increases the amount of release. Also, in the soil environment, the increase in temperature increases the penetration of the cadmium element in the environment, and the effect of the contact time parameter is also proportional to the pH variation.