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Gases in extremely thin air absorb X-           rays and short-wave radiation raising           temperature to 1000oC or h...
o    •        http://www.youtube.com/watch?v=_36MiCUS1ro
•   •        –•    ••        –
PM2.5 = fine particles                                                               Air Quality Forecast:                ...
•                                           •                                            •     –                          ...
http://video.google.com/videoplay?docid=-6812852032323913573&ei=Q-gJSu-UNZngrAKotLmiDg&q=Asbestos+mine&hl=en&emb=1
•••••••••••
••
Ozone damage to leaf
2NO => N2 + O2 or 2NO2 => N2 + 2O2   ceramic honeycomb catalyst        2CO + O2 => 2CO2
Electrical Generator – converts mechanical energy into electricalenergy usually by electromagnetic induction.Electromagnet...
Video, Electricity and Magnetism: Generating Electricity:http://videos.howstuffworks.com/discovery/41266-powering-the-futu...
Highly developed countriesconsume much more energy thandeveloping countries.In the USA, industry uses 42% ofenergy > homes...
••
••••           exposure tooriginal   acid rain     Black Forest, Germany                                                 E...
Top Mercury Releases in Ohio  Three Ohio coal-fired power plants are among the top 50 in the nation for  mercury air pollu...
American Electric Power (AEP), Mountaineer Carbon Capture Video:http://www.aep.com/environmental/climatechange/carboncaptu...
Carbon capture andsequestration (storage)
••
•    Lake Nyos is    a 700-foot    deep crater    lake that is    situated on    the side of a    volcano in    Cameroon.
•   ••    •    •
Fluidized-bed combustion of coal
Coal Ash Waste Ponds• Waste products of coal combustion• Produced by coal-fired power plants                              ...
PBS Video, Cleaning Coal:http://www.pbs.org/video/video/1115809446/search/coal
•   •••   ••   •    •
•       •    •   •        •
-12%                      *Pb (not shown                      in this graph)                      showed a -98%           ...
National Emissions Estimates                    (fires and dust excluded)            For Common Pollutants and their Precu...
What the hell is a C.F.L.?http://video.nytimes.com/video/2009/03/27/business/energy-environment/1194838469595/green-inc-sh...
Lecture 11 protecting earth s atmosphere
Lecture 11 protecting earth s atmosphere
Lecture 11 protecting earth s atmosphere
Lecture 11 protecting earth s atmosphere
Lecture 11 protecting earth s atmosphere
Lecture 11 protecting earth s atmosphere
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Lecture 11 protecting earth s atmosphere

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Lecture 11 protecting earth s atmosphere

  1. 1. Gases in extremely thin air absorb X- rays and short-wave radiation raising temperature to 1000oC or higher Temperatures as low as -140oCMeteors burn up from friction with air molecules Ozone layer is thickest at 25-30 km 99% of atmosphere (by weight) is below 30 km
  2. 2. o • http://www.youtube.com/watch?v=_36MiCUS1ro
  3. 3. • • –• •• –
  4. 4. PM2.5 = fine particles Air Quality Forecast: http://www.airnow.gov/ PM10 = coarse particles Smoky Mountains clear day Smoky Mountains• Average adult breathes 3,000 gallons of air per day hazy day• Particle pollution can occur year-round• People can reduce exposure by checking daily air quality forecast and if it is bad they should limit strenuous outdoor activities• Children are most susceptible to particle pollution due to higher levels of physical activity• Cause asthma, chronic bronchitis, decreased lung function, premature death in people with heart or lung disease
  5. 5. • • • – •Chemical Company Acquitted of Crime – NewYork Timesasbestos
  6. 6. http://video.google.com/videoplay?docid=-6812852032323913573&ei=Q-gJSu-UNZngrAKotLmiDg&q=Asbestos+mine&hl=en&emb=1
  7. 7. •••••••••••
  8. 8. ••
  9. 9. Ozone damage to leaf
  10. 10. 2NO => N2 + O2 or 2NO2 => N2 + 2O2 ceramic honeycomb catalyst 2CO + O2 => 2CO2
  11. 11. Electrical Generator – converts mechanical energy into electricalenergy usually by electromagnetic induction.Electromagnetic Induction – discovered by Michael Faraday in 1830s,current is produced when a conductor (e.g., copper wire) is moved backand forth by a magnet, the magnet applies a force of the electrons in thecopper causing them to move, as you move the copper wire back andforth past the magnet you produce an alternating current of electricity. horseshoe copper magnet disc Simple Electric Generator: http://www.youtube.com/watch?v=TU8GKV2TXxo&feature=related
  12. 12. Video, Electricity and Magnetism: Generating Electricity:http://videos.howstuffworks.com/discovery/41266-powering-the-future-electricity-video.htm
  13. 13. Highly developed countriesconsume much more energy thandeveloping countries.In the USA, industry uses 42% ofenergy > homes/businesses use33% energy > transportation uses25% energy.Developing countries will demandmore energy due to increase inpopulation.
  14. 14. ••
  15. 15. •••• exposure tooriginal acid rain Black Forest, Germany Effect of acid rain on a forest, Czech Republic
  16. 16. Top Mercury Releases in Ohio Three Ohio coal-fired power plants are among the top 50 in the nation for mercury air pollution in 2008, according to a 2008 report released by the Environmental Integrity Project in Washington D.C.EPA Limit for mercury in bottled water:2 ppb (0.002 milligrams / liter = 0.0076 mg/gal) 2 * 3Ohio Plants Still Pumping out Mercury: *http://www.dispatchpolitics.com/live/content/local_news/stories/2010/03/18/copy/ohio-plants-still- 1pumping-out-mercury.html?adsec=politics&sid=101 *
  17. 17. American Electric Power (AEP), Mountaineer Carbon Capture Video:http://www.aep.com/environmental/climatechange/carboncapture/
  18. 18. Carbon capture andsequestration (storage)
  19. 19. ••
  20. 20. • Lake Nyos is a 700-foot deep crater lake that is situated on the side of a volcano in Cameroon.
  21. 21. • •• • •
  22. 22. Fluidized-bed combustion of coal
  23. 23. Coal Ash Waste Ponds• Waste products of coal combustion• Produced by coal-fired power plants 525,000,000 gallon of ash waste pond in Kingston, Tennessee Fly ash contains heavy metal toxins: Arsenic Cadmium Chromium Mercury Radium Selenium ThoriumAerial Image of Kingston Tennessee Ash UraniumSlide 12/23/08
  24. 24. PBS Video, Cleaning Coal:http://www.pbs.org/video/video/1115809446/search/coal
  25. 25. • ••• •• • •
  26. 26. • • • • •
  27. 27. -12% *Pb (not shown in this graph) showed a -98% decrease from 1970 to 2000 primarily due to unleaded gas. -45% -40% +20% -75%
  28. 28. National Emissions Estimates (fires and dust excluded) For Common Pollutants and their Precursors Millions of Tons Per Year 1980 1985 1990 1995 2000 2005 2007Carbon Monoxide (CO) 178 170 144 120 102 94 81Lead (Pb) 0.074 0.023 0.005 0.004 0.003 0.001 0.001Nitrogen Oxides (NOx) 27 26 25 25 22 18 17Volatile Organic Compounds (VOC) 30 27 23 22 17 15 15Particulate Matter (PM) PM10 6 4 3 3 2 2 2 PM2.5 NA NA 2 2 2 1 1Sulfur Dioxide (SO2) 26 23 23 19 16 15 13Totals 267 250 220 191 161 145 129
  29. 29. What the hell is a C.F.L.?http://video.nytimes.com/video/2009/03/27/business/energy-environment/1194838469595/green-inc-shedding-light-on-cfls.html?scp=1&sq=CFL&st=cse

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