Biofuels are three main forms
: 1. Solid
wood, sawdust, straw, corn cobs, bagasse, animal dung, charcoal, shell or peel crops such as rice husk, cotton, peanuts, etc., firewood, biofuels are the first to be used in humans. cooking, lighting and warmth to households from ancient times thousands of years ago. The meat does not contain compounds There are plenty cellulose (Cellulose) is a compound of about 50 percent of each compound to heat varies. Wood with a moisture content lower calorific value than wood to a high listing. It can be seen that the introduction of fresh wood used as fuel directly to heat less. Is a low calorific value However, the volume of wood resources is greatly reduced. Cutting wood for firewood around the world has decreased
2. Liquid
energy from biofuels in liquid form may be classified into three main categories
Ann Blake Hall. This is an organic compound A volatile liquid Alcohol used as fuel are two types of ethanol (alcohol consumption) and methanol (alcohol, which can not be eaten) ?? take it from plants and animals, including pure vegetable oil. Used vegetable oil (Waste Vegetable Oil) and tallow biodiesel produced from vegetable oils, tallow and used cooking oil. Through chemical treatment of waste oil. Oil, chemical and physical characteristics similar to petroleum. Can be extracted from waste biomass use.
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