Teste de modelagem de layout de vários biodigestores em batelada para a produção contínua de biogás

Abstract

Social technology can be an important tool for several applications in rural areas, which have few technological resources and become alternatives to increase efficiency in the field and an inducer for rural development. The biodigester is a traditional and consolidated technology that is used to alleviate sanitary and environmental problems in rural areas, as well as to produce biogas and biofertilizer. Bovine manure is a very powerful raw material for the production of renewable energy, since it is highly efficient for biogas production. In this context, the objective of the present research was to evaluate the potential for biogas production in series using five batch digesters. Obtaining significant values in different periods with 118 days resulted in an average production per day of 485.59ml, the median of 522ml and the mode of 548.27ml. For the system with only one biodigester and the period of 30 days the average was 215ml, the median of 230.76ml and the mode of 222.22ml. The variables studied were pH, methane gas, carbonic gas, hydrogen sulfide and ammonia. The results of the research show that, the biogas production was significant according to the supply and the period of time of operation. The burning of the gas produced by the system was performed by means of the flammability test obtaining a positive result. The result of this study shows that the system developed is simple to operate, economical and easy to access, using the biogas produced for various purposes.