chapter 15 air pollution and stratospheric ozone depletion
TRANSCRIPT
![Page 1: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/1.jpg)
Chapter 15Air Pollution and Stratospheric Ozone
Depletion
![Page 2: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/2.jpg)
Air Pollution
Definition: the introduction of chemicals, particulate matter, or microorganisms into the atmosphere at concentrations high enough to harm plants, animals, and materials such as buildings, or to alter ecosystems.
![Page 3: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/3.jpg)
Major Air Pollutants
Volatiles Organic Compounds
Ozone
Lead
Mercury
Sulfur Dioxide
Nitrogen Oxides
Carbon Oxides
Particulate Matter
![Page 4: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/4.jpg)
![Page 5: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/5.jpg)
Natural Sources of Air Pollution
Volcanoes
Lightning
Forest fires
Plants
![Page 6: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/6.jpg)
Anthropogenic Sources of Air Pollution
Transportation
Power plants
Industrial processes
Waste disposal
![Page 7: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/7.jpg)
![Page 8: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/8.jpg)
![Page 9: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/9.jpg)
Primary Pollutants
Primary pollutants- polluting compounds that come directly out of the smoke-stack, exhaust pipe, or natural emission source.
Examples: CO, CO2, SO2, NOx, and most suspended particulate matter.
Secondary Pollutants
Secondary pollutants- pollutants that have undergone transformation in the presence of sunlight, water, oxygen, or other compounds.
Examples: ozone, sulfate and nitrate
![Page 10: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/10.jpg)
Photochemical Smog
![Page 11: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/11.jpg)
Acid Deposition (Acid Rain)
Nitrogen oxides and Sulfur oxides are released into the atmosphere and combine with atmospheric oxygen and water.
These form the secondary pollutants nitric acid and sulfuric acid.
These secondary pollutants further break down into nitrate and sulfate which cause the acid in acid deposition.
![Page 12: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/12.jpg)
Effects of Acid Deposition
Lowering the pH of lake water
Decreasing species diversity of aquatic organisms
Mobilizing metals that are found in soils and releasing these into surface waters
Damaging statues, monuments, and buildings
![Page 13: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/13.jpg)
Thermal Inversions
Thermal Inversion- when a relatively warm layer of air at mid-altitude covers a layer of cold, dense air below.
The warm inversion layer traps emissions that then accumulate beneath it.
![Page 14: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/14.jpg)
Ways to Prevent Air Pollution
Removing sulfur dioxide from coal by fluidized bed combustion
Catalytic converters on cars
Scrubbers on smoke stacks
Baghouse filters
Electrostatic precipitators
![Page 15: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/15.jpg)
![Page 16: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/16.jpg)
Baghouse filters
![Page 17: Chapter 15 Air Pollution and Stratospheric Ozone Depletion](https://reader036.vdocuments.net/reader036/viewer/2022081418/56649cbb5503460f9498380c/html5/thumbnails/17.jpg)
Electrostatic precipitators