Potencial da cogeração de energia térmica por biogás na agroindústria Bolo das Oliveiras / PB.

Abstract

The solid residues proceeding from anthropic activities, as the bovine farming, present a serious environmental problem, due to raised concentration of organic substance. In such a way, one becomes necessary to use technologies for its treatment, that respects the three pillars of the sustainability (economic, social and environmental). In light of this situation, the biodigesters appear to be an alternative capable of taking care of these requirements. Then, this work searched to investigate the potential of thermal energy cogeneration happened of the sertanejo biodigester installed in the agribusiness Cake of the Oliveiras, in Pombal - PB. The inquiry occurred between May and September of 2018 totaling 105 days. The biodigestor was fed daily with 100 kg of bovine dejections and diluted in the in the proportion of 1:2. The time of hydraulical retention of 45 days was adopted, this period had been carried through biweekly analyses until 105° day. The analytes of the tributary and the effluent ones encompass the physics and chemistries, as well as the qualification and quantification of biogas generated. The results obtained throughout the experiment show a few variations with respect to the substrate, that can be associated with the incomplete digestion of the organic mass. Whereas, the production of biogas presented flame of good quality and 7,92 calorific power next to KWh / m ³. However, the unit of anaerobic biodigestion implanted in the Agroindustry Cake of the Olive Trees although to generate 1.2m³ of biogas by day can operationally be optimized in virtue of this possesss the bigger energy potential of what this being gotten.