Fly Larvae Associated with Mix Biochar for reducing swine manure Emission
The overall goal of this Plan is to propose a cost-effective strategy to manage swine manure for the Emilia Romagna breeders. The Plan is aimed at reducing the environmental pressures in terms of greenhouse gas emissions and ammonia associated to the swine management and to enhance the use of swine manure. Swine manure may be utilized as fertilizer, giving essential nutrients for agricultural crops but the continued land application of manure may result in excessive nutrient loss from soil to water deteriorating ecosystem. Therefore vermicomposting and pyrolysis will be proposed as new technologies for manure treatment that can reduce waste, GHGs emissions, and be environmentally safe.
1) Swine manure digestion by larvae. 2) Separation of the lipid and protein parts to be used for energy purposes, following a circular economy approach.3) Pyrolysis of larvae residues to obtain energy (syngas) and biochar that can be used as soil amendment in agriculture to improves structure and quality of soil. 4) assessment of the reduction of environmental impact resulting from the use of swine manure for energy and agronomic purposes following a life cycle assessment approach
Main practical recommendation
The overall goal of this Plan is to propose a cost-effective strategy to manage swine manure for the Emilia Romagna breeders. The Plan is aimed at reducing the environmental pressures of swine manure in terms of greenhouse gas emissions and ammonia and to enhance the use of swine manure in agriculture. Therefore vermicomposting and pyrolysisof swine manure will be proposed as new technologies for manure treatment that can reduce waste, GHGs emissions, and be environmentally safe.
Main Results/outcomes
-Reduction of ammonia emissions from swine manure trough the conversion of nitrogen into more usable forms
- Reduction of greenhouse gas emissions due to the application of swine manure in the field, substituting them whit biochar, obtained by the pyrolysis, as soil amendment.
- Improvement of the structural and qualitative features of soil. In fact, the biochar application allows to maintain texture and structure, to enhance soil carbon stock, to reduce evapotranspiration as well as leaching of contaminants.
- Reducing emissions of greenhouse gases associated with the overall proposed solution.
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