chapter13gh - Chapter 13 Air Pollution Chapter Outline...

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1 Chapter 13 Air Pollution Chapter Outline Historical Perspective Sources and Types of Air Pollution Smog Trends in Air Quality Meteorological Factors Affecting Acid Precipitation Signs of prosperity Air Pollution – Meteorology •weather conditions influence the dilution and dispersal of air pollutants •air pollution effects weather and climate Air Pollution – Meteorology •Air Pollution Episodes or Events often occur when there is no major change in the output of contaminants •Quantity of contaminants emitted into the atmosphere •Atmospheric conditions promote pollution events Air Pollution: continuing threat to our health and welfare •Average adult male •30 lbs of air/day •2.6 lbs of food/day •4.4 lbs of water/day Dust Bowl, Kansas 1937 Historical Perspective •Air is never perfectly clean •Natural sources of pollution have always existed (ash, salt particles, pollen, spores, smoke from forest and brush fires, wind blown dust etc.) •Humans accentuate natural pollution • Tribes were partly nomadic to get away from their wastes-animal, vegetable and human • Fire without chimneys • Products of incomplete combustion inside living quarters Historical Episodes Before the Industrial Revolution
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2 • Chimney removed combustion products from inside to outside • 61 A.D. Rome; Philosopher Seneca: “as soon as I had gotten out of the heavy air of Rome and the stink of the smoky chimneys…which poured forth . .pestilential vapors and soot…I felt an alteration of my disposition Historical Episodes Before the Industrial Revolution • 1784—Watt’s steam engine; boilers to burn fossil fuels (coal) to make steam to pump water and move machinery • Smoke and ash from fossil fuels by powerplants, trains, ships: coal (and oil) burning = smoke, ash • British Parliament studies 1819 1843 1848 1866 1875= lots of dirty air, nothing was done Historical Episodes The Industrial Revolution Smoke Abatement Era-U.S. 1880-1940’s • No penalties for violations in early laws • Smoke abatement ordinances, stricter laws starting in 1940’s with penalties • Natural gas = clean fuel • A. Ore Smelting Era 1900-1930’s CuS + O 2 = Cu +SO 2 (SO 3 ) same for Pb, Zn and Ni (pollutant) • B. 1900—Electricity (Powerplant) + CARS Disaster Era—1930’s--??? • A. Meuse Valley, Belgium, 1930
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This note was uploaded on 07/18/2011 for the course EARTH SCIE 130 taught by Professor Frankbuonaiuto during the Fall '09 term at CUNY Hunter.

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chapter13gh - Chapter 13 Air Pollution Chapter Outline...

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