Estudio experimental sobre la factibilidad energética que tienen los excrementos sólidos de los animales terrestres del bioparque los ocarros para producir biogás en un biodigestor

Abstract

This research project analyzes the energetic feasability contained in the faeces of the land animals living in Los Ocarros to produce biogas in a biodigester. The main objectif of this research is to explore new ways of managing this type of waste as a way to produce renewable energy to contribute to the ecological balance. To reach this objectif three steps were followed 1) Preparing the faeces to evaluate, 2) Characterizing the subsrate through established parameters and 3) Calculating the specific rate of biogas production and the pourcentage of methane. After 4 months of experimentation we could find evidence in the results that the faeces of the exotic animals of Los Ocarros, instead of having a similar characterization of organic matter (ST, SV, DQO) to the faeces of swines and other ruminants, that are used to produce biogas, don’t come with the conditions needed to produce biogas. On the other hand, pigs’ faeces, that were used for experimental runs as a strategy to avoid failure at the time of assembly, produced biogas in the same experimental conditions. This low production of biogas is thought to be due to the medication to which the exotic animals are subjected (antibiotics and parasitics) that can inhibit the anaerobias bacterias needed in the process of the organic matter’s digestion. Since the same inoculums were effective to degrade the pig’s faeces