E Waste

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E-Waste:

E-Waste By Sai Tanay

Introduction:

Introduction E waste may be defined as discarded computers, office electronic equipment, entertainment device electronics, mobile phones, television sets and refrigerators.  In E-Wastes, E stands for electronic. If the E-Wastes are disposed in an improper manner, They are very harmful to the atmosphere.

How are e-Wastes formed?:

How are e-Wastes formed? E-waste is forming exponentially simply because the markets in which these products are produced are growing rapidly and the world is changing towards the digital side. Most of the e-wastes are produced when the mobile phones, Televisions or the Computers are disposed off. Coming to the monitors, CRTs have relatively high concentration of lead as it is necessary for the display. E-waste

Advantages and Disadvantages :

Advantages and Disadvantages In addition to various hazardous materials, e-waste also contains many valuable and precious materials. Up to 60 elements from the periodic table can be found in complex electronics. Using a computer as an example, a normal CRT monitor contains many valuable but also many toxic substances. One of these toxic substances is cadmium (Cd), which is used in rechargeable computer batteries and contacts and switches in older CRT monitors.

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Cadmium is extremely toxic to humans, in particular adversely affecting kidneys and bones. It is also one of the six toxic substances that has been banned in the European Countries. Beyond CRT monitors, plastics, including polyvinyl chloride (PVC) cabling which is used for printed circuit boards, connectors, plastic covers and cables are also toxic in nature.

Effects of Burning of e-Waste:

Effects of Burning of e-Waste When burnt or land-filled, these PVCs release dioxins that have harmful effects on human reproductive and immune systems. Mercury, which is used in lighting devices in flat screen displays, can cause damage to the nervous system, kidneys and brain, and can even be passed on to infants.

Increase in e-Wastes:

Increase in e-Wastes Rapid product innovations and replacement, especially in ICT (Information and Communication Technology) and office equipment, combined with the migration from analogue to digital technologies and to flat-screen TVs and monitors have given way to lower prices for many electrical goods, which has increased global demand for many products that eventually end up as e-waste. 

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The e-waste problem is of global concern because of the nature of production and disposal of waste in a globalized world. Although it is difficult to zero global e-waste amounts, we do know that large amounts are very harmful to the atmosphere and the living beings. This raises the immediate concerns of the dangers to humans and the environment. Monitors & CRT, keyboards, laptops, modems, telephone boards, hard drives, floppy drives, Compact disks, mobiles, fax machines, printers, CPUs, memory chips, connecting wires & cables can be recycled.

Recycling e-Wastes:

Recycling e-Wastes E-Waste recycling is more than just reusing materials Recycling e-Waste not only diverts toxic metals  but also many valuable materials can be reused. Recycling reduces the amount of waste as well as the mining of raw materials. Recycling also saves on energy There is a massive energy saving when creating secondary raw materials compared to primary raw materials. For example, recycling steel into a secondary raw material uses 74% less energy than the production of the primary product. Recycled Aluminium uses 95% less, Copper 85% less, Lead 65% less and Plastics 80% less.

Ideal ways of disposing e-Wastes:

Ideal ways of disposing e-Wastes Even though recycling is the best way of using the e-Wastes, It is not possible everywhere. The following methods are followed to dispose the e-Wastes. (a) Landfilling: Soil is excavated from the trenches and waste material is buried in it , which is covered by a thick layer of soil.  It is one of the most widely used methods for disposal of e-waste .

Ideal ways of disposing e-Wastes:

Ideal ways of disposing e-Wastes (b) Incineration: It is a controlled and complete combustion process, in which the waste material is burned in specially designed incinerators at a high temperature (900-1000 o C). Advantage of incineration of e-waste is the reduction of waste volume and the Utilization of the energy content of combustible materials.

E Waste Generation and Recycling 2000-2011:

E Waste Generation and Recycling 2000-2011

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