In this month’s article, we look at pure biodiesel production and its feedstock usage for 2017. A previous update covering pure biodiesel production can be found in the April 2017 Report. Pure or traditional biodiesel is known as Fatty Acid Methyl Ester (FAME). Renewable diesel (also known as Hydrotreated Vegetable Oil or HVO) and FAME often are confused. These both are made from organic biomass, but are different products due to the production process and quality attributes.
Renewable diesel is produced by hydrotreating very clean biomass materials after removing impurities from the raw biomass-based feedstocks. Renewable diesel has an identical chemical composition with traditional petroleum diesel (i.e. both are hydrocarbons), and can be used in high concentration in all diesel engines. Pure biodiesel, an ester, is produced by esterifying vegetable oil and fats. The usage of pure biodiesel in high concentration can cause problems in conventional diesel engines, so in general is limited to a maximum inclusion rate of up to 20 percent (B20) in the United States.
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