Eliminating the Hazardous Elements from E-Waste by Electrolysis

摘要

Due to the advent of modern technology and sophistication leads to the development of thousands of electronic gadgets and the span of the life is of short duration. These leads to the piling and upheaval of mountainous materials. The managing the e-waste[1] becomes cumbersome due to non availability of suitable methods identified as of now. These being one of the emerging field, different techniques are being employed to initiate the disposal. The developed countries are exporting the e-wastes to the underdeveloped countries. Hence one form of hazards is transferred to the other form. The underdeveloped country people are suffered by Occupational diseases of various kinds and intensity[3]. The disposal and handling of e-waste by means of incinerators, landfill [2] or exporting overseas have become unviable due to the environmental pollution and global legislations. Earlier e-wastes are processed to extract the precious elements which are worthwhile. This paper focuses on effective recovery of hazardous elements from e-waste and makes them to be recyclable. The extraction of the elements includes heavy metals like Lead (Pb), Cadmium (Cd), Copper (Cu) from selected e-wastes of Cathode Ray Tube, Printed Circuit Board. On analysis it is found that the non hazardous process for extracting this metal is electro chemical process[3] which abide the norms laid down by Pollution Control Board (PCB). In this paper various activities being carried out for extracting the heavy metals are spelt out in subsequent topics. This paper not only addresses the e-waste disposal but also the recycling [4] of other materials which includes plastic, ferrous and non ferrous materials. Some mechanical, manual and electrical processes also included in various stages of segregation.