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According to DuPont, existing bioethanol plants can cost-effectively be retrofitted to biobutanol production. [15] Additionally, butanol production from biomass and agricultural byproducts could be more efficient (i.e. unit engine motive power delivered per unit solar energy consumed) than ethanol or methanol production. [16]
A dish of ethanol aflame. Various alcohols are used as fuel for internal combustion engines.The first four aliphatic alcohols (methanol, ethanol, propanol, and butanol) are of interest as fuels because they can be synthesized chemically or biologically, and they have characteristics which allow them to be used in internal combustion engines.
The two most common types of biofuel are bioethanol and biodiesel. Brazil is the largest producer of bioethanol, while the EU is the largest producer of biodiesel. The energy content in the global production of bioethanol and biodiesel is 2.2 and 1.8 EJ per year, respectively. [17]
Biogasoline chemically differs from common biofuels such as biobutanol and bioethanol, as these substances are alcohols. Biogasoline is, however, chemically similar to biodiesel, which are made with additional carbons.
Biofuels include bioethanol, an alcohol made by fermentation—often used as a gasoline additive, and biodiesel, which is usually used as a diesel additive. 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]
The cost of processing the feedstock into bioethanol; Such a calculation may or may not consider the following effects: The cost of the change in land use of the area where the fuel feedstock is grown. The cost of transportation of the bioethanol from the factory to its point of use; The efficiency of the bioethanol compared with standard gasoline
The development of second-generation biofuels has seen a stimulus since the food vs. fuel dilemma regarding the risk of diverting farmland or crops for biofuels production to the detriment of food supply. The biofuel and food price debate involves wide-ranging views, and is a long-standing, controversial one in the literature.
The United States produces mainly biodiesel and ethanol fuel, which uses corn as the main feedstock.The US is the world's largest producer of ethanol, having produced nearly 16 billion gallons in 2017 alone. [1]