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Transcript of Environmental Chemistry 9/14/2015APHY1011. Environmental Chemistry The Carbon Cycle...
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Environmental ChemistryEnvironmental Chemistry
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Environmental ChemistryEnvironmental Chemistry The Carbon Cycle
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Environmental ChemistryEnvironmental 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 converter04/21/2304/21/23 APHY101APHY101 33
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Environmental ChemistryEnvironmental 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 ChemistryEnvironmental Chemistry
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Environmental ChemistryEnvironmental Chemistry
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Environmental ChemistryEnvironmental Chemistry
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Environmental ChemistryEnvironmental 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 ChemistryEnvironmental 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 ChemistryEnvironmental Chemistry Desalination
04/21/2304/21/23 APHY101APHY101 1010
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Wastewater Treatment Plant in Wastewater Treatment Plant in Prichard, AlabamaPrichard, Alabama
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180 MGD Wastewater Treatment Plant in 180 MGD Wastewater Treatment Plant in Baltimore, MarylandBaltimore, Maryland
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Environmental ChemistryEnvironmental 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 ChemistryEnvironmental Chemistry
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Environmental ChemistryEnvironmental Chemistry
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