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Click on “Download PDF” for the PDF version or on the title for the HTML version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. Investigations into the Beneficial Uses of Ash from the Combustion of Manure from Beef Cattle FeedlotsPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: International Symposium on Air Quality and Manure Management for Agriculture Conference Proceedings, 13-16 September 2010, Dallas, Texas 711P0510cd.(doi:10.13031/2013.32680)Authors: Robert E DeOtte, B A Stewart, Anthony J Megel, Murali Darapuneni, Clay A Robinson, David B Parker Keywords: Manure ash, fly ash, ash uses, Class F fly ash The potential for beneficial uses or co-products from the combustion of beef cattle manure were investigated. Phosphate concentrations indicate some potential for use as an agronomic soil amendment, but the phosphate is not freely released. Greenhouse studies suggest that neither good nor harm occurs. Ashes from the combustion of coal and lignite have been used effectively as an amendment to Portland cement concrete and a variety of construction applications, indicating potential for similar applications for the manure ash. The strength and chemical properties suggest only limited possibilities for the ash in this arena. The ash can be amended with Portland cement to yield a product suitable for road base or flowable fills, but appears to serve primarily as a fine aggregate lacking the plasticity normally associated with the Class C ashes produced from the combustion of lignite or sub-bituminous coals. Chemical analyses of the coal and manure ashes indicate subtle differences in the composition that may account for the difference in plasticity. Tests with bottom ash suggest that all ash fractions, when sintered and crushed, may be suitable for use on icy roads as a replacement for sand and salt. It is particularly suited to this application because of its essentially inert chemistry. (Download PDF) (Export to EndNotes)
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