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Biofuels
Biofuel, or Biogasoline, most often applies to the product of compounded biomass substance called feedstocks. Biomass is abstract in nature and used to produce gasoline that generates net 0 carbon emissions through a process called gasification. There are multi-various methods through which this fuel can be produced; however, determining the optimal gasification route through which to apply a particular feedstock or biomass relies on experimentation and trial and error.

Biodisel
There are two main types of biofuels produced: Ethanol and Biodiesel. Biodiesel is a liquid fuel comprised of vegetable oils and or animals fats. To create the gasoline itself, these subsequent liquids are combined with alcohol. Biodiesel is used to fuel compression ignition engines, otherwise know as diesel engines. The most common product of biodiesel is B20, a 20:80 blend: 20% biodiesel to 80% petroleum diesel. However, biodiesel is flexible in nature and can combine with petroleum diesel at varying levels. As of 2021, Biodiesel serves as the second largest asset of biofuel consumption and production-ranging 23% overall.

Biodiesel Structure
Similar to other gasoline structures, biodiesel establishes from a foundation of hydrocarbons. Biomass-based energy is a compatible source for biodiesel production due to its hydrocarbon configuration-one that shares many similarities with its counterpart, petroleum-based gasoline. Due to this, biodiesel can still work within today's engines, car systems and corresponding products.

Ethanol
Ethanol is a fuel assembled from numerous plants and their respective biomasses. However, is mainly used as a mix-in alcohol that works hand in hand with gasoline to cut down on it's own emissions. When mixed together, the pressure at which a fuel will combust, otherwise know as octane, increases. Additionally, ethanol works to combat the the byproducts produced by many modern day vehicles-such as carbon monoxide, nitrogen oxides and volatile organic compounds, when in reaction with sunlight, produce smog. Majority of Ethanol gasolines are E10 or E15, however some vehicles allow for differing configurations of ethanol. Due to its composition and versatility, ethanol accounted for approximately 83% of biofuel consumption and production rates in the U.S. in 2021.

Ethanol Structure
In order to produce Ethanol, it is likely to engage in a process of fermentation. Most forms of ethanol found within the United States are comprised of corn starch or plant starch and sugars, which then need to be metabolized by microorganisms in order to produce ethanol. These microorganisms include varying bacteria and yeast.

History of Biofuels
Consumption and Production of biofuels has played an essential role in the gasoline economy since the beginning of the 1980's. Most recently, companies and organizations, such as the federal Renewable Fuel Standard (RFS) Program and California's Low Carbon Fuel Storage have set initiatives to promote the use of biofuels and reduce fossil fuel-based gasoline. In 2016, the Oregon Legislature enacted the Clean Fuels Program (CPF) -managed by the Department of Environmental Quality Commission-and Washington, their own program in January, 2023. Other locations known to have created their own clean fuel program include California and British Colombia.