Environmental Chemistry

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Environmental Chemistry
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Environmental Chemistry

• The Carbon Cycle

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Environmental Chemistry

• Air Pollution
• Carbon Monoxide
• 80 from natural sources
• 20 from automobile combustion (urban problem)
• Photochemical Smog
• Nitrogen Oxide from automobile combustion
• Nitrogen Dioxide forms Ozone
• NO2 sunlight ? NO O
• O O2 ? O3
• Catalytic converter

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Environmental Chemistry

• Air Pollution
• Industrial Smog
• Sulfur oxides (SO2 and SO3)
• Smelters that produce Cu, Zn, Pb
• Coal burning
• SO2 O2 ? SO3
• SO3 H2O ? H2SO4

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Environmental Chemistry
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Environmental Chemistry
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Environmental Chemistry
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Environmental Chemistry

• Purifying Our Water
• Remove dirt and bacteria
• Boiling, iodine tablets or UV light
• Aerate to remove odors and improve taste

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Environmental Chemistry

• Desalination
• Removing salt from seawater or brackish
  groundwater
• Distillation and reverse osmosis
• Osmosis the net flow of a fluid into a more
  concentrated solution

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Environmental Chemistry

• Desalination

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Wastewater Treatment Plant in Prichard, Alabama
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180 MGD Wastewater Treatment Plant in Baltimore,
Maryland
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Environmental Chemistry

• Wastewater Treatment with algae
• Advanced Integrated Pond Systems
• Plants use waste as fertilizer
• Paddlewheels aerate the waste
• Sunlight disinfects the waste
• Saves electricity and reduces the volume of
  sludge
• Plants are harvested for fuel
• Example 1, 2

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Environmental Chemistry
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Environmental Chemistry