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Biofuels are a wide range of fuels which are in some way derived from biomass. 

Bioethanol is an alcohol made by fermenting the sugar components of plant materials and it is made mostly from sugar and starch crops. With advanced technology being developed, cellulosic biomass, such as trees and grasses, are also used as feedstocks for ethanol production. Ethanol can be used as a fuel for vehicles in its pure form, but it is usually used as a gasoline additive to increase octane and improve vehicle emissions. 

Biodiesel is made from vegetable oils, animal fats or recycled greases. Biodiesel can be used as a fuel for vehicles in its pure form, but it is usually used as a diesel additive to reduce levels of particulates, carbon monoxide, and hydrocarbons from diesel-powered vehicles. 

Clearfield County is the proud home of the first commercial-scale ethanol plant.  Bionol Clearfield LLC commenced production in December of 2009.

Bionol Clearfield LLC

Bionol Clearfield LLC

Bionol Clearfield LLC

(Information from wikipedia)