How do you create references for journal articles in APA format? If you need to write a psychology paper, then you are going to probably need to reference a number of different journal articles. Such articles summarize the results of studies and experiments conducted by researchers on an enormous range of topics.
The problem that second generation biofuel processes are addressing is to extract useful feedstocks from this woody or fibrous biomass, where the useful sugars are locked in by lignin, hemicellulose and cellulose. All plants contain lignin, hemicellulose and cellulose.
How Biofuel is Made. The energy that we get from biofuels originally came from the sun. This solar energy was captured through photosynthesis by the plants used as feedstocks (raw materials) for biofuel production, and stored in the plants' cells.Many different plant materials can be used for biofuel: Wood and its byproducts can be converted into liquid biofuels, such as methanol or ethanol, or into woodgas. 2  Wood can also be burned as solid fuel, like the familiar firewood. 3  Chipped waste biomass, such as the tops of trees discarded by logging operations, can be burned in specially designed furnaces.