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Coal

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Clean Coal DOE s (Department of Energy) Carbon Capture Program Conducted research on two different areas of technology: ... – PowerPoint PPT presentation

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Title: Coal


1
Coal
  • By Josephine Latimer
  • Jonathan Klosop
  • Evan Sedor

2
Topics to Cover
  • Is coal a source of air pollution what are the
    impacts of it?
  • Health risks of mining
  • Clean coal
  • Surface and Underground Mining Comparing their
    effects on the environment.

3
Coal Source of Air Pollution?
  • Pollution from coal powered plants produce smog
  • Doctors say inhaling smog is like sunburn for
    lungs
  • Triggers asthma attacks and causes lung damage
  • Soot pollution- a by product of burning coal
  • Exposure leads to heart attacks and lung damage

4
Reduction of Impacts
  • Improvements in technology
  • highly effective technologies developed to detect
    release of pollutants
  • Pre Planning projects, pollution controls,
    monitoring effects of mining, coal industries
    minimizing impacts on communities
  • Coal washing
  • reduces ash content by over 50

5
Health Effects of Mining
  • Acid Rain
  • Dust and Noise Pollution
  • Water Pollution

6
Clean Coal
  • From 1970 to 2012 emissions of major pollutants
    from coal-fueled power plants has reduced 90
  • Its not entirely clean but a lot cleaner and
    efficient than in the past

7
Can coal be converted to other forms of energy?
  • Yes, a major source of the United States
    electricity comes from coal
  • Coal is used to generate electricity in 48 states
  • 39 of electricity in the
  • U.S. comes from coal
  • There are over 600 coal
  • power plants in the U.S.

8
Methods of Coal Extraction
  • There are two methods of coal extraction
  • Underground Mining
  • Surface Mining

9
Underground Mining
  • Deep Mining
  • Can be used to mine coal up to 1,000 feet
    underground.
  • Early form of mining
  • They used elevators, hand tools, and several
    machines to bring up coal.

10
Underground Mining Environmental Impacts
  • Methane gas trapped in the mines
  • Grounds above the mines can collapse
  • Water can get into the mines
  • Contaminated water left in abandoned mines

11
Surface Mining
  • Two thirds of coal is mined using this method.
  • Coal beds less than 200 feet below the surface.
  • Cheaper mining
  • The use of heavy machinery to remove soil and
    rocks to uncover coal streams.

12
Surface Mining Environmental Impacts
  • Mountaintop removal and valley filling
  • Dirt and rocks polluting streams
  • Other chemical pollutants in the water

13
Comparing Impacts of Mining Methods
  • Methane Emissions
  • Underground Mining 7 of total US Methane
    emissions
  • Surface Mining 2 of total US Methane emissions
  • Surface and Water Pollution
  • Surface mining is considered more dangerous.

14
Does Clean Coal Exist?
  • A question that has been greatly debated.
  • Many believe that there will never be a way to
    capture the emissions from burning coal.
  • However, there are advancements being made that
    could make this possible.

15
Clean Coal
  • DOEs (Department of Energy) Carbon Capture
    Program
  • Conducted research on two different areas of
    technology
  • Pre-Combustion Capture
  • Post-Combustion Capture

16
Pre-Combustion Capture
  • Removing CO2 before burning it in a power plant
  • The coal is turned into a synthesis gas.
  • Water gas shift reaction
  • The CO2 is then captured and separated.

17
Post-Combustion Capture
  • Deals with capturing CO2 after the coal is
    burned.
  • Not used currently
  • Not cost effective or efficient
  • Research in the field consists of
  • Improvements on current CO2 separation
  • CO2 capture options for larger existing plants
  • Advancing CO2 Compression technologies.

18
Post-Combustion Capture
19
Clean Coal Issues and Outlooks
  • These processes are still not ready for large
    scale use.
  • The power generated would greatly decrease.
  • Equipment would not be cost effective.
  • However, this could change in the near future.
  • Some still remain skeptical of the idea of clean
    coal.

20
Conclusion
  • Coal is a source of pollution, causes problems
    such as asthma and lung damage
  • Health risks from pollution come in forms of acid
    rain, dust and noise pollution and water
    pollution.
  • Coal extraction has many harmful effects on the
    environment. However, underground mining, which
    is much more dangerous, is not as harmful to the
    environment as surface mining.
  • Clean coal technology is used in small scale
    today, but is not ready for large scale plants.
    However, it may be in the near future.

21
Works Cited
  • Carbon Capture RD. Energy.gov. U.S. Department
    of Energy, N.d. Web. 15 October 2013.
    lthttp//energy.gov/fe/science-innovation/carbon
    -capture-and-storage-research/carbon-capture-rdgt.
  • U.S. Energy Information Administration. U.S.
    Energy Information Administration Independent
    Statistics and Analysis. U.S. Department of
    Energy, 2011. Web.15 October 2013.
    lthttp//www.eia.gov/coal/gt.
  • "Coal Mining the Environment."N.p.. Web. 15 Oct
    2013lthttp//www.worldcoal.org/coal-the-environment
    /coal-mining-thenvironment/gt.
  • Walsh, Bryan. Exposing the Myth of Clean Coal
    Power. Time. Time Inc. 10, January 2009. Web. 15
    October 2013.
  • "How Air Pollution Threatens Our Health N.p..
    Web. 15 Oct 2013. lt."http//content.sierraclub.org
    /coal/.gt
  • "Coal Use the Environment." N.p.. Web. 15 Oct
    2013. ltwww.worldcoal.org.gt
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