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Compaction Behavior of Poultry Litter and Switchgrass
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number 056053, 2005 ASAE Annual Meeting . (doi: 10.13031/2013.20042) @2005
Authors: Z. Colley, O.O. Fasina, D. Bransby and C.W. Wood
Keywords: Density, specific energy, pellets, moisture, switchgrass
Switchgrass and poultry litter are feedstocks that can be developed in the state of
Alabama for bioenergy applications. Both feedstocks are however, lightly dense and therefore not
economical to transport them from the site of production to places where they can be effectively
utilized, hence the need to densify them by pelleting. In order to develop the optimal pelletization
method for these feedstocks, fundamental studies were carried out on the effect of process
parameters (moisture content, temperature and die size) on pellet formation quantified by pellet
density and specific energy required to make the pellets in a single die system. Pellets were
manufactured by attaching a single die to a universal testing machine operated at constant speed.