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Adding Value to Poultry Litter using Fractionation, Pyrolysis, and Pelleting

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2007 ASAE Annual Meeting  074064.(doi:10.13031/2013.23096)
Authors:   Kaushlendra Singh, Mark Risse, John Worley, K C Das, Sidney Thompson
Keywords:   Poultry Litter, Pyrolysis, Fractionation, Screening, Pelleting, Char, Bioenergy

In areas of excess poultry litter production, eco-friendly and more energy efficient utilization alternatives must be developed. In raw form, poultry litter has certain draw backs for both energy production and fertilizer such as high ash content and moisture content, a corrosive nature, low heat content, low bulk density, and low nutrient content. Fractionation divides poultry litter into a fine, nutrient rich fraction and a coarse, energy rich fraction. Pyrolysis of the coarse fraction produces char, bio-oil, and gases. The pyrolysis process can provide energy to pellet the fine fraction; char can be sold or used as an energy source or a soil amendment, and bio-oil can be used as a pellet binder.

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