E wastes Presented by Satyam Yadav
What is E wastes??? E-waste is clearly defined as consumer or business electronic equipment that is at the end of it's useful life. E-waste is basically caused by the rapid growth of technological devices, increased population, and even human mentality. Electronic waste or e-waste is one of the rapidly growing problems of the world. E-waste comprises of a multitude of components, some containing toxic substances that can have an adverse impact on human health and the environment if not handled properly
Types of E - waste The composition of WEEE/e-waste is very diverse and differs in products across different categories. It contains more than 1000 different substances, which fall under 'hazardous' and 'non-hazardous' categories. Mobile phone,TV, Scanner,Calculator,Audio, Printer, Microwave,Air conditioner, Washing machine,Catridge, Military electronic,Mother board Security Alarm.
CAUSES OF E WASTES: Growth of Technological Devices: One reason of e-waste is the growth of technological devices. People discard their old computers more frequently and let that waste build up. 1-Growth of Population: When population is increasing, it is reasonable to believe that more people are buying computers and throwing the old ones out. Not only is this creating its own problem, but it is intensifying the other problems that are causing e-waste.
2-Human Mentality: E-waste is occurring is because of human mentality. In the race to get 'smarter, people use money to improve their lives with new technology, computers and other electronics and products become 'obsolete' even if they remain 'useful'. 3-Development: As of now, it is estimated that there are over a billion personal computers in the world. In developed countries, a computer's average life span is only two years. As the digital divide narrows, we must address the question of disposal of large numbers of "end of life" computers and other IT equipment.
4-Harmful elements include in E - waste The burden of e-waste not only pollutes the land-fill it is having serious health implications due to chemical leaching into the water table, eventually making its way to agricultural produce and into people. Often, these hazards arise due to the improper recycling and disposal processes used. It can have serious repercussions for those in proximity to places where e-waste is recycled or burnt. Following is the list of highly toxic chemicals that are emitted from e-waste in its unsafe disposal. 5-Lead Lead exerts toxic effects on various systems in the body such as the central (organic affective syndrome) and peripheral nervous systems (motor neuropathy), the hemopoietic system (anemia), the genitourinary system (capable of causing damage to all parts of nephron) and the reproductive systems (male and female.
5-Mercury It causes damage to the genitourinary system (tubular dysfunction), the central and peripheral nervous systems as well as the fetus. When inorganic mercury spreads out in the water, it is transformed into methylated mercury, which bio-accumulates in living organisms and concentrates through the food chain, particularly by fish. 6-Cadmium It is a potentially long-term cumulative poison. Toxic cadmium compounds accumulate in the human body, especially in the kidneys. There is evidence of the role of cadmium and beryllium in carcinogenicity.
7-Polyvinyl chloride Polyvinyl chloride (PVC) is mainly found in the plastic components of electrical and electronic equipment. When burned, PVC releases harmful dioxins, furans and phthalates, which are known carcinogens and reproductive toxicants. 8-Phthalate esters Phthalates are a group of chemicals that are used as softeners to PVC. Since they are not chemically-bound to the plastic, they can easily leech into the environment, thus causing asthmatic and allergic reactions to children.
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