ECOl 1000 1nd Edition Lecture 16 Outline of Last Lecture II. Nuclear EnergyIII. Problems with Nuclear PowerIV. Disposal of Nuclear WasteOutline of Current Lecture V. BioenergyVI. Cellulosic EthanolVII. Ocean-Growth BiofuelVIII. Wind PowerCurrent Lecture- Bioenergy: energy contained in firewood and other plant mattero Derived from solar energyo Traditional fuels- wood, charcoal, and animal dungo Advantages Carbon neutral (no net release of carbon dioxide into the atmosphere) Lower nitrates and sulfates Abundant Widely distributed Produced domesticallyo Disadvantages Carbon neutral Costs associated with transport, processing, fertilizers, water- Cellulosic ethanolo Advantages Switchgrass NativeThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute. Needs little fertilizer or water Grows on marginal land Perennialo Disadvantages Not produced large-scale No subsidy available Enzymes expensive- Ocean-grown biofuelo 1. Semi-permeable bags are filled with wastewater and freshwater algae o 2. Bags allow freshwater to flow out of the bag and prevent saltwater from entering, killing algaeo 3. Algae feed on the waste and grow fatty, lipid cellso 4. Fatty cells are rich in oil to be used as fuelo Bags absorb carbon dioxide from the air and release oxygen and freshwater into the ocean- Wind Powero Geography and topography cause uneven heating of eartho Winds formed from high to low pressureo Denmark generates nearly 10% of its electricity from wind Plans to produce 50% by the year 2030 Commands 60% of global market for wind turbines Helps economic growth and creates jobso 2/3 of wind power in the US comes from Texas, California, Iowa, Minnesota, and Washingtono Wind farms: clusters of turbineso Less than .5% of global energy consumptiono 6% of renewable energyo Fastest growing sectoro Advantages No fuel needed (no drilling, wastes, etc) No pollutants released Domestic energy source Not subject to disruptions of single energy planso Disadvantages Bird and bat deaths (interfere with bird movement) Aesthetics? Intermittent wind (not continuously available) Windy areas not usually near urban
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