Juan Calix, Hammett, Bert, Adhikari, Achyut, Timmerman, Anna, Dunaway, Christopher R., Kuehny, Jeff S., Willis, Joe
When performing hot (active) composting, temperature is a useful tool for reducing pathogens in the compost pile. For the compost to be considered treated, the process must be scientifically validated to control pathogens. Temperature is increased by microbial activity of thermophilic bacteria. For this microbial activity — and thus the temperature — to remain consistent, oxygen needs to be introduced to the compost pile. This can be done in two ways. The first is by turning the compost, which is known as turn composting. The second way of introducing oxygen is by inserting it via pipes under the compost pile. This is known as aerated static composting. The Environmental Protection Agency-validated method for pathogen reduction in an aerated static pile needs constant aeration and maintaining temperature at 131 degrees Fahrenheit (55 C) for three consecutive days and a curing process afterward.
Juan Moeira, Research Assistant, School of Nutrition and Food Sciences; Achyut Adhikari, Associate Professor, School of Nutrition and Foods Sciences; Christopher Dunaway, Assistant Extension Agent, Jefferson Parish; Bert Hammett, Extension Agent, East Baton Rouge Parish; Jeff Kuehny, Director, LSU AgCenter Botanic Gardens; Anna Timmerman, Assistant Extension Agent, St. Bernard Parish and Joe Willis, Extension Agent, Orleans Parish.
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Pub. 3838-B (Online Only) 04/22
Luke Laborde, Interim LSU Vice President for Agriculture
Louisiana State University Agricultural Center, Louisiana Agricultural Experiment Station, Louisiana Cooperative Extension Service, LSU College of Agriculture
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