This concept developed by the companies BTM Simbiosis, Virosa Oleoconsulting and Biogest, which presented for the innovation award at the first #RenewableGas Show, carries out a mechanical and biological processing of alperujo that allows the generation of a dry bone that is used for heating systems, a high-quality agricultural biostimulant and biogas, which in turn is used for the generation of electricity, heat and biomethane.
The concept uses the synergies offered by combining the different processes so that no liquid waste is generated, not even the digestate from anaerobic digestion, which is transformed into the biostimulant through an aerobic biological process. This agricultural biostimulant is an important source of organic matter, easily assimilated macro and micro nutrients that promotes biodiversity and concentration of soil microorganisms. This valorization model has already demonstrated the viability of the different processes that make it up in large-scale farms.
In the olive oil sector, a particularly complicated challenge is presented due to the large amount of alperujo generated in the oil mills.. The growing volume of this waste, together with the limited processing capacity of the olive pomace industry, is bringing the sector to the brink of collapse.
The GREEN APP circular economy concept is aimed at oil mills, allowing the recovery of their waste: alperujos, pâtés, alpechines and wastewater. This alternative model allows adaptation to different farm sizes, will encourage the implementation of new processing plants closer to the producers of this waste, and will ensure a reduction in the carbon footprint of the olive oil industry.
In addition, the products generated will offer local renewable energy sources produced in a sustainable manner, as well as an agricultural biostimulant that will be useful to local farmers to improve soil characteristics.
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