FILFERT Operational Group: Multi-layer filters formulated to capture gases from slurry and digestate lagoons and reuse them as fertilizers

Validate multilayer filters formulated with waste and byproducts to capture GHG, H2S, and NH3 in farms and biogas plants, subsequently reusing them as inoculated amendments adapted to the crop and soil. - Valorize waste and byproducts to mitigate GHG, H2S, and NH3 in farms and biogas plants and comply with environmental legislation through an economically viable solution. - Create sustainable N, C, and S enriched amendments, compatible with microorganism inoculation and complementary to inorganic fertilizers. - Initiate the development of a national atlas of waste and byproducts with fertilizing properties and the capacity to capture polluting and toxic gases. - Automate the formulation of filters and amendments using digital tools based on criteria of: fertilization, gas capture, legislation, and sustainability.

Valorize at least 10 wastes and by-products through the formulation and validation of functional multi-layer filters and mitigation of GHG (20-50%), SH2 (30-50%) and NH3 (80-90%) released from slurry and digestate ponds.

Invention of a technically and economically viable structural filtration prototype for biogas farms and plants. This system channels gases, adjusts the flow, supports layers of filter material, is easy to handle, and allows for photocatalytic processes, as well as measuring gas capture efficiency.

Reduce the use of inorganic inputs by 20-40% without losing productive performance, nutritional quality, or economic performance.

Improve the efficiency of nitrogen use and carbon sequestration in the soil, as well as improve soil health and the possibility of creating carbon credits in the future.

Identify, characterize and evaluate the potential as fertilizer and gas capture in at least 30 wastes and/or by-products to create a map that allows easy location of the availability of materials and their properties.

Creation of a digital interface that allows for the automatic formulation of the most suitable combinations (weight percent) of waste and byproducts, taking into account their availability, distance to the treatment plant, crop needs, and target soil type, while complying with current environmental and fertilizer legislation. This interface will facilitate the use of the technology by the various stakeholders.

Report on industrial scalability and replicability, with cost-benefit analysis and potential for adoption by waste managers and livestock farmers, with the latter evaluating the use of this technology as a possible technical improvement available (TWA).

Training and transfer activities aimed at producers, technicians, companies, and public administration for the evaluation of their economic viability in biogas farms and plants with a practical approach and transferable results.