Lecture twenty-three 12 01 08

Lecture twenty-three 12 01 08 - Coal 51% of electricity 82%...

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Coal Largest human source of mercury emissions 2 Produces more radioactive waste than nuclear power plants 3 51% of electricity 82% of C0 2 emissions 1 http://www.sciam.com/article.cfm?id=coal-ash-is-more-radioactive-than-nuclear-waste 3 2 http://www.epa.gov/camr/basic.htm#global 1 http://www.eia.doe.gov/cneaf/electricity/page/co2_report/co2emiss.pdf Releases more radioactivity than nuclear power plants 4 4 http://www.physics.ohio-state.edu/~aubrecht/proliferationAAPTSu03.pdf
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A coal-fired plant releases 100X more radioactivity than a nuclear power plant of comparable capacity
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Heart-rot fungi Heart-wood
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Degrade heartwood of living trees How do they get in?
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Injuries Pruning wounds Absorbing branches
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Fungi entombed in the trunk of a tree
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Hollow trees Wood decay fungi eliminate heartwood
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Wood decay continues after death of the tree Cellulose Lignin CO 2 Humus Stable for centuries Contributes to soil fertility
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Cannot be sold for lumber Blue stain Caused by non- wood rotting fungi
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Paper
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Bleaching to remove lignin Blue stain = more bleach $$$$$$ Chlorinated waste products Water pollution
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Blue stain in finished products Douglas-fir siding Soft wood
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Lecture twenty-three 12 01 08 - Coal 51% of electricity 82%...

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