Lecture 21 - Lecture 21 Renewable & Alternative Energy...

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Lecture 21 Reading: Chapter 8 Biomass Biomass provides 11% of all energy consumed worldwide In the US it supplies about 4.5% of our energy demands In some developing countries, biomass provides 90% of the energy consumed Figure 8.05 Biomass Energy Energy derived from living organisms or their remains o “unfossilized fuels” o Biofuels Major sources of biomass energy: o Organic wastes o Standing forests o Energy crops Biomass can be used in several ways o Direct combustion (most common) o Thermochemical conversion to methanol or syngas o Biochemical conversion to ethanol or biogas Biomass Fuels in TN Ethanol from corn
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o Form of alcohol produced by fermentation o 1 bushel of corn (8 gallons) can produce 2.5 gallons of ethanol 67 Million gallons/year capacity Ethanol added to gasoline (gasohol) o Cleaner burning o Increases octane level Plant supplies entire east coast
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Lecture 21 - Lecture 21 Renewable & Alternative Energy...

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