Air pollution

1
Air pollution

• What is the best air pollution strategy for our
  community?

2
Questions

• What is air pollution?
• What are the main sources of air pollution?
• What are the main air pollutants?
• What is green house effect?
• What are the risks of air pollution?
• How do we reduce air pollution?

3
What is air pollution?

• Contamination of atmosphere by gas, liquid or
  solid waste that
• endanger health welfare of plants animals
• attack materials
• Reduce visibility
• Produce undesirable odours

4
Sources of air pollution

• Combustion
• Iron steel mills
• Smelters
• Municipal incinerators
• Oil refineries
• Cement plants
• Nitric sulphuric acid plants

5
Air pollutants

• Carbon monoxide, Carbon dioxide
• Nitrogen oxides,
• Sulphur dioxide, Ozone,
• Particle matter ( from burning coal, diesel,
  wood)
• Radon, Volatile organic compounds,
• Benzene, Formaldehyde,
• perchloroethylene,
• Smog, radon, asbestos, talc, mica flint.

6
Green house effect

• Result of increased concentration of carbon
  dioxide
• This allows solar energy to enter atmosphere
• Reduces the reemission of infrared radiation from
  earth
• Leads to warming trend
• Affects global climate, partial melting of ice
  floods

7
Risks the most affected

• Cause death (carbon monoxide poisoning-
  hemoglobin have more affinity to carbon monoxide
  than oxygen)
• Children and elderly
• People with chronic diseases such as asthma,
  emphysema, heart disease
• Affect livestock flowers crops

Lung with Emphysema
8
Other pollutants their effects
9
Strategy on air pollution

• How do we reduce air pollution?
• Conserve electricity
• Service vehicles regularly
• Use carpool/public transport/cycle/walk
• Reduce burning wood in fire place stove

10
Strategy on air pollutioncont

• Avoid burning leaves/trash
• Build tall chimneys for factories
• Avoid gas powered garden equipment
• Reduce the number of trips taken in vehicles

11
Conclusion

• Think globally and act locally
• Knowledge
• Take responsibility for actions
• Limit emission of pollutants
• Drive less-drive smart

12
Bibliography

• http//healthandenergy.com/air_pollution_causes
• http//www.soest.hawaii.edu/GG/ASK/airpol.html
• http//library.thinkquest.org/26026/Environmental_
  Problems/air_pollution_-_causes.html
• http//circ.ahajournals.org/cgi/content/abstract/1
  05/13/1534?eaf
• Encarta