effect of e-waste on environment & health
TRANSCRIPT
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EFFECT OF E-WASTE ON ENVIRONMENT & HEALTH
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EFFECT OF E-WASTE ON ENVIRONMENT
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What is E-waste
• E-waste or electronic waste is a term used for those electronic equipment that has reached its end of life in the hand of its current user
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electrical and electronic devices is the fastest-growing sector
20 to 50 million tonnes e-waste are generated world-wide
It contain toxic material such as mercury, lead, cadmium, chromium etc.
Introduction
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What happens with it ...
• device are storage, re-use and recycling,
• Export to developing country as a charity or illegally
• Reused in developing countries
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E-waste recycling sites in Asia
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E-waste type & E-waste composition
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D i d y o u k n o w . . . ?
• People discard computers every two to four years on average
• Cell phones have a life-cycle of less than two years 20% lead by weight.
• 36 chemical elements
• 500 million obsolete computer & 130 million cell phone discarded in USA
• 20-50 million tonnes E-waste
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Landfill-disposal
• materials that are placed within it.
• In landfills a certain amount of chemical and metal leaching will occur
• PBDE and the cadmium may leach into the soil and groundwater.
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Disposal methods
• landfills or incinerators
• in 2000 more than 4.6 million tonnes of e-waste ended up in landfills nationally
• certain amount of chemical and metal leakage will occur
• The vaporization of mercury in Uncontrolled fires causes health and environmental risks
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Incineration
• The vaporization of E-waste create risk.
• Incinerated ash contain hazardous components.
• Disposed in a mono fill or landfill.
• Ash transporter exposed to health risk.
• In 1997,133 pounds of mercury releases to the air
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E-toxic component in computer-junk
• computer circuit boards containing heavy metals like lead & cadmium
• computer batteries containing cadmium• cathode ray tubes with lead oxide & barium• Brominated flame-retardants used on printed circuit
boards, cables and plastic casing.• Poly Vinyl Chloride 12(PVC) coated copper cables and
plastic computer casings that release highly toxic dioxins & furans when burnt to recover valuable metals
• mercury switches• mercury in flat screens• Poly Chlorinated Biphenyl’s (PCB’s) present in older
capacitors & transformers
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E-waste and its effect on health and the environment
Nickel (Ni) • skin damages and asthma , lung damages,
carcinogen• Enter environment through air.
Antimony (Sb)• eye and skin irritation, hair loss, lung and
heart damages, and fertility problems. • This element is better absorbed in soils
containing steel, magnesium or aluminum.
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Polybrominated Diphenyl Ethers (PBDE)
• Cause anemia, damages to the skin, liver, stomach and thyroid
• Contamination of pregnant women is very risky .
• Drip & contaminate water.
• Contaminate the chain of production of some foods.
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Tetra Bromo Bisphenol-A (TBBPA) mutations or carcinogen effects.
• toxic to aquatic organisms.
• damages to the endocrine.
Polybrominated Biphenyls (PBB)
• damage kidneys, liver and thyroids.
• passing along the food chain.
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Polybrominated Diphenyl Ethers (PBDE)
Thyroxin, damaging the endocrine system, thyroid damages
Chlirofluorocarbons (CFC)Destroy the ozone layer,
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Polyvinyl chloride (PVC
Damages animal kidney.
Soluble in water
Arsenic
carcinogen, Skin & lung cancer
Barium
Gastrointestinal disorder & muscle weakness change in heart beat rate paralysis ,death ,eye& skin irritation
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Accumulate in aquatic organism
Beryllium Inhalation cause pneumonia
respiratory inflammation, lung cancer
Not dissolve in water
Cadmium
Lung damage & death ,kidney damage, carcinogenic
Absorbed by plants
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Lead If incinerated it transmitted to air & soil Anorexia, muscle pain & headache, weakness,
brain damage, & even death. Effect reproductive system.
If incinerated it transmitted to air & soil
Mercury More accessible in organic form Lung damage, nausea, vomiting, diarrhea, Eye & skin irritation, Damages to brain, kidneysEtc.More accessible in organic form
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Responsibility
• Easily recyclable
• Use required electronic devices
• Use it to its complete life period.
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