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Abstract

With the continual modernization, researchers and scientists are very conscious about the environmental issues. The E-waste which is relatively recent addition to the waste stream in the form of discarded electronic and electric equipment is getting increasing attention from policy makers as the quantity being generated rising rapidly. The consumption of e-waste has been exponential in the last two decades. The developing countries are facing huge challenges in the management of e-waste which are either internally generated or imported illegally as used goods in an attempt to bridge the so-called "digital divide". E-waste contains hazardous constituents that may negatively impact the environmental and affect human health if not properly managed. On the other hand, e-waste contains up to 60 metals including platinum, gold, silver, copper, aluminium, palladium, iron and other valuable metals. Considering these two facts along with the resource management strategy has been committed to extract precious metals from Printed Circuit Board (PCB) of e-waste. In this study, Printed Circuit Board (PCB) are collected from the motherboards of waste computers and performing several reactions in a chemical lab. Al 2 (SO) 4 has been prepared by using sulfuric acid and potassium hydro-oxide and CuSO 4 prepared by using nitric acid and sulfuric acid. In this preparation process the top most priority is placed on the environment friendly issues. This study will very helpful in the proper management of ewaste and reservation of our resources which are limited. 2 circuit, cathode ray tubes. In the same contrary, the components represent the valuable part of circuit which fabricates different metallic bodies containing copper and gold, zinc and others [16].Actually, in last decades, the quantity of CRT monitors as the form of television as well as computers is considered as the replacement Liquid Crystal Displays (LCD) The prediction goes that around 8.5 thousand tons televisions as well as computer monitors are redundant in the south Asia every year. These same circumstances are found in other industrial, developed with developing state in the world. So, this ratio indicated that re cycle must be needed [17]. As a result, during the last decades, numerous explorations have been planned or aimed at the innovation of reasonable techniques withdrawal for precious metallic substances. This process is continuing from the last several decades. Basically, these processes are divided in different ways such as physical, hydrometallurgical, bio metallurgical, and hydrometallurgical as well as electrochemical procedures. Here used the electrochemical techniques which are considered the most competent because lower discharge of poisonous gases with lower volatile metals, lower energy of expenditure, and small waste production with its easier operational circumstances.