week4electrnic - Other E-Waste and other hazardous waste in...

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1 ‘Other’ E-Waste and other hazardous waste in our garbage Electronic Waste • In our society we are heavily dependent on electronic equipment, but eventually they need to be disposed of • Many electronics contain material which are hazardous - often toxic and/or carcinogenic, and not just one material but a large number of different materials • Computers and cell phones are particularly bad as they often become obsolete quickly as better models become available (this is sometimes called planned obsolescence)
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2 • Ewaste is only about 2%of total waste but accounts for up to 70% of hazardous material in landfills • Computers are a significant source of many toxic materials and even in the small percentages of a landfill that they make up, they can significantly pollute an area. 1: Lead in cathode ray tube and solder 2: Arsenic in older cathode ray tubes 5: Antimony trioxide as flame retardant 4: Polybrominated flame retardants in plastic casings, cables and circuit boards 3: Selenium in circuit boards as power supply rectifier 6: Cadmium
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week4electrnic - Other E-Waste and other hazardous waste in...

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