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The US National Renewable Energy Laboratory (NREL) states that energy security is the number one driving force behind the US biofuels programme, [114] and a White House "Energy Security for the 21st Century" paper makes it clear that energy security is a major reason for promoting biodiesel. [115]
EN 14214 is a standard published by the European Committee for Standardization that describes the requirements and test methods for FAME - the most common type of biodiesel. The technical definition of biodiesel is a fuel suitable for use in compression ignition (diesel) engines that is made of fatty acid monoalkyl esters derived from ...
Biodiesel production is the process of producing the biofuel, biodiesel, through the chemical reactions of transesterification and esterification. [1] This process renders a product (chemistry) and by-products. The fats and oils react with short-chain alcohols (typically methanol or ethanol). The alcohols used should be of low molecular weight.
Decarboxylated and decarbonylated biofuels are renewable hydrocarbon fuels produced by converting biomass, by either decarboxylation or decarbonylation, into liquid transportation fuels, such as ethanol and biodiesel. [1] [2] Conversion of biomass to liquid fuels is preferred as an alternative to the extraction of fossil fuels because biomass ...
The energy content in the global production of bioethanol and biodiesel is 2.2 and 1.8 EJ per year, respectively. [ 17 ] Bioethanol is an alcohol made by fermentation , mostly from carbohydrates produced in sugar or starch crops such as maize , sugarcane , or sweet sorghum .
Biodiesel - Biodiesel can be produced from vegetable oil through the process of transesterification. Biodiesel burns like normal diesel and works fine in any diesel engine. The name just indicates that the fuel came from vegetable oil. Straight vegetable oil - Straight vegetable oil works in diesel engines if it is heated first. [5]
Specific energy is energy per unit mass, which is used to describe the chemical energy content of a fuel, expressed in SI units as joule per kilogram (J/kg) or equivalent units. [1] Energy density is the amount of chemical energy per unit volume of the fuel, expressed in SI units as joule per litre (J/L) or equivalent units. [2]
While setting the new B20 standard, ASTM International also made changes to its specifications for B5 and for 100% biodiesel, or B100. [4] The FTC will require pumps with biodiesel blends to carry a blue label, while biomass-based diesel blends will carry an orange label. The somewhat confusing "small print" was required by the energy act.