Resumo

MOREJON-MESA, Yanoy; VIZCAY-VILLAFRANCA, Darielis; PELEGRIN-RODRIGUEZ, Ramón  e  NOGUERA, Malgreter. Feasibility of the Adequate Anaerobic Biodigestion Technology for a Dairy Agroecosystem. Rev Cie Téc Agr [online]. 2023, vol.32, n.3  Epub 24-Jun-2023. ISSN 2071-0054.

The present investigation is oriented towards the determination of the economic, environmental and energetic feasibility of the anaerobic biodigestion technology suitable for a dairy agroecosystem, established in "El Guayabal" University Farm, belonging to the Agrarian University of Havana. For this, animal species existing in the scenario is determined, since it will contribute the organic waste to the biodigester. The number of animals is also determined, considering the movement of the herd, which would make it possible to determine the biomass generated daily with the purpose of establishing the sizing of the appropriate biodigester technology and knowing the behavior of the economic and energy parameters. Among the main results obtained, it was evidenced that the installation of a tubular polyethylene biodigester is more feasible than the installation of a fixed dome biodigester, meaning an economic saving of 19,796 pesos for the concept of technology selection. The necessary volume of this technology must be 20 m3, making it possible to produce 190 kg/day of biofertilizers, which represent an economic contribution of 2,375 pesos (95 USD) constituting an added value, in addition to the energy and economic benefits to be obtained. Moreover, with the introduction of the selected anaerobic biodigestion technology, it is possible to generate electrical energy to drive a fodder mill, a refrigeration system, a mechanical milking system, lighting, electric fencing and a water pumping system, all which require the acquisition of a 35 kW biogas generator.

Palavras-chave : Renewable Energy; Dairy Production; Anaerobic Digestion; Energy Feasibility; Environmental Impact.

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