ESF- Chapter 15

rizaaryani's version from 2015-12-08 05:41


Question Answer
EthanolAlcohol based biofuels (alcohol of extremely high purity)
BiodieselOil-based Biofuels
Co-productsvaluable residual outputs including Dried Distillers Grains with Solubles (DDGS), which is a high value animal feed, with a long shelf life.
Crush spreadthe difference between 1) the cost of the soybean feedstock and 2) the value of the co-products of crushing those soybeans including the soybean meal and soybean oils that are converted into biodiesel.
E10The standard commonly used in the United States to limit the potential repercussions of higher ethanol content, blend limits for the amount of ethanol in fuel for most vehicles have been capped at 10% by vehicle manufacturers.
FFVFlexible Fuel Vehicle, an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel, and both fuels are stored in the same common tank.
Lifecycle emissionscarbon content of biofuels over its lifetime (?)
FeedstocksPrimary energy source
Drop-in fuelsFuels that can be synthesized to identically match the types of fuels that they are displacing, with identical hydrocarbon chains and mixes eliminating the need to change equipment or take on risks of failure or efficiency loss,
Import displacementrefers to oil or refined fuels imports.or countries that important substantial amounts of crude oil or refined fuels, finding domestic sources of fuel replacements can have both economic and security implications. Improving the balance of trade, investing in capital and wages domestically, and reducing the potential impacts of physical supply disruptions all seem powerful justifications for promoting biofuels.
Blending mandatesThe standard usually specifies the precise fuel and level required to be blended into the fuel supply, and typically wholesale producers of fuel are expected to meet this standard.
Renewable Fuel StandardOne strategy to simultaneously overcome a number of obstacles to deployment is to simply mandate the use of a specific volume of production biofuels in the overall fuel supply. this program is know as RFS in the US
Renewable Identification NumbersBlending certificates to prove that the obligated parties (refiners an importers) have met the blending requirement specified under RFS. RINs could be generated from blending activity or purchased from other blenders who had accumulated excess RINs over their blending requirements.
generated from
Cellulosic Fuelsbiofuel produced from wood, grasses, or the inedible parts of plants.
Algal fuelsfuels derive from algaes.
BiocrudeSynthetic fuel under investigation as substitute for petroleum, extracted from biomass treated under certain pressure and temperature
E85a gasoline blend with 85% ethanol.
Food vs. Fuel Debaterising demand for agricultural output’s causes tension between food production and fuel production,this is particularly true for the first-generation feedstocks currently in use that tend to use the same farmland and other forms of capital as traditional food production.
BagasseThe fibrous portion of sugarcane.The fibrous bagasse that is left over is typically used on site as a feedstock for a boiler to generate heat and electricity to be used to power the sugar mill, though its high water content and low energy density makes it a low-value fuel, though the high amount of bagasse by weight means there is plenty of fuel to meet a sugar mill’s needs.



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