what are the different generations of biofuels?
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['First generation biofuels consist of ethanol from sugar or starch (such as from corn) and biodiesel from animal fats and vegetable oils.', 'Second generation biofuels are those produced from ligno-cellulosic materials such as switchgrass or wood chips.']
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['Traditionalists (born approximately from 1922 to 1945)', 'Baby Boomers (born approximately from 1946 to 1964)', 'Generation X (born approximately from 1965 to 1980)', 'Millennials a.k.a. Generation Y (born approximately from 1981 to 1997)', 'Gen Z (born since 1998)']
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2. Traditional biomass vs. modern biomass. Biomass produced in a sustainable way—the so-called modern biomass—excludes traditional uses of biomass as fuelwood and includes electricity generation and heat production, as well as transportation fuels, from agricultural and forest residues and solid waste.
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Natural gas is the best fossil fuel in terms of energy output per unit carbon dioxide emitted. Biomass is renewable because a new crop can be grown after each harvest, and biomass is a low carbon fuel. Biomass has the approximate chemical formula CHO. It is similar to coal with an oxygen atom added.
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['Cool Facts.', 'First Generation, 1981 – 1993.', 'Second Generation, 1994 – 2001.', 'Third Generation, 2002 – 2008.', 'Fourth Generation, 2009 – Present.']
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There are four major types of nonrenewable resources: oil, natural gas, coal, and nuclear energy. Oil, natural gas, and coal are collectively called fossil fuels. Fossil fuels were formed within the Earth from dead plants and animals over millions of years—hence the name “fossil” fuels.
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The ingredients for biofuels include (but are not limited to) ethanol (from corn, tobacco and orange peels), methane and vegetable oil (see References 1 and 2).
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Examples of clean fuels include most types of ethanol, biodiesel, natural gas, biogas,electricity, propane and hydrogen.
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Globally, renewables made up 24 percent of electricity generation in 2016, much of it from hydropower (16 percent). Renewable ethanol and biodiesel transportation fuels made up over 12 percent of total U.S. renewable energy consumption in 2018, up from 7 percent in 2006.
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Renewable resources are solar energy, wind energy, geothermal energy, biofuels, cultivated plants, biomass, air, water and soil. In contrast, non-renewable resources are those that are available to us in limited quantities, or those that are renewed so slowly that the rate at which they are consumed is too fast.
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Some well-known alternative fuels include bio-diesel, bio-alcohol (methanol, ethanol, butane), refuse-derived fuel, chemically stored electricity (batteries and fuel cells), hydrogen, non-fossil methane, non-fossil natural gas, vegetable oil, propane and other biomass sources.
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Over millions of years, heat and pressure from Earth's crust decomposed these organisms into one of the three main kinds of fuel: oil (also called petroleum), natural gas, or coal. These fuels are called fossil fuels, since they are formed from the remains of dead animals and plants.
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The three major categories of energy for electricity generation are fossil fuels (coal, natural gas, and petroleum), nuclear energy, and renewable energy sources. Most electricity is generated with steam turbines using fossil fuels, nuclear, biomass, geothermal, and solar thermal energy.
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Introduction to Major Energy Sources Energy sources can be classified into two types: nonrenewable and renewable. Nonrenewable resources, such as fossil fuels and nuclear material, are removed from the earth and can be depleted. These resources have been the most used type of energy in the modern era.
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Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas. Carbon is the main element in fossil fuels. For this reason, the time period that fossil fuels formed (about 360-300 million years ago) is called the Carboniferous Period.
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Answer and Explanation: Fossil fuels are energy sources that take millions of years to develop, such as oil and coal. Biomass on the other hand refers to any organic material...
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Fermentation is the most common method for producing fuel ethanol. The most common ethanol production processes today use yeast to ferment the starch and sugars in corn, sugar cane, and sugar beets. Corn is the main feedstock for fuel ethanol in the United States because of its abundance and low price.