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Composition as It Affects Pathogen Inactivation in Animal Manure-Based Composts

Erickson, Marilyn
University of Georgia
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  1. To determine the rate of inactivation of fecal pathogens under varying composting conditions encountered in the field;
  2. To identify the mechanism for pathogen inactivation during composting of animal manures by monitoring chemical and physical parameters in the system;
  3. To evaluate selected management tools during composting of animal manures on inactivation of fecal pathogens.
More information
NON-TECHNICAL SUMMARY: This study will investigate pathogen inactivation in composting systems incorporating animal manure as a raw ingredient. Qualitative and quantitative variations in other raw ingredients incorporated into the compost mixture will be evaluated for their influence on pathogen inactivation.

APPROACH: Inactivation of pathogens (Escherichia coli O157:H7, Listeria monocytogenes, and Salmonella spp.) in compost bioreactors and static compost piles will be monitored in response to manure type, carbon feedstock, carbon:nitrogen ratio, and compost amendment (ammonium sulfate, hydrogen peroxide). Data collected will assist in the development of expanded guidelines for compost operations where manure is used as a raw ingredient

Funding Source
Nat'l. Inst. of Food and Agriculture
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Bacterial Pathogens