Generación de bioelectricidad microbiana con estiércol de ganado vacuno, mediante celdas de combustible microbiano, Estación Experimental Tunshi ESPOCH.

Abstract

A study of microbial electricity generation vaccane gained manure was carried out, by means of microbial fuel cells, for the purpose of using these residues applying magnetic fields to biomass and to obtain major energy production laboratory scale. The research was performed in the laboratories of the Center of Alternative Energy and Environment (CEAA), of the Faculty of Sciences Faculty - ESPOCH. Four cells microbial fuel with four different treatments were designed. Each cell is formed by two chambers, an anode and cathode separated by a membrane of carbon fiber, the anode has 30 grams of manure diluted in 125 ml of wastewater from the Experimental Stable Station Tunshi - ESPOCH; in the three cells were analyzed of unicellular organisms behavior stimulated constant electromagnetic fields (CMC) of low intensity. The treatments 1 and 3 were subjected to 0.3 Gauss for 5 minutes and 20 days, respectively, the 2 to 0.7 Gauss 5 minutes, 4 without magnetic fields (control). Connection were realized by means of cables to a device or sensor that the voltage came up straight per minute for 20 days produced in millivolts and stored in a computer; During the experiment, the cells were supplied with wastewater from cattle manure and glucose as the power source for microorganisms. The same way as the first glucose dose applied the voltages to itself; they diminished, nevertheless, with the waste water the behavior was of big help so that the microorganisms will become stable while the voltages were increasing. As the first dose of glucose decreased voltages, albeit with the residual water was applied behavior was of great help to stabilize the microorganisms while the voltages increased. It is concluded that treatment 3 was generated by increased production of bioelectricity on day 3 with a voltage of 323 millivolts. . The influence of magnetic fields affected to the positive an quick growth of the microorganisms. The voltages produced with cattle manure were low compared to other samples of microbial consortia. It is recommended that future investigations to analyze other substrates to promote the bioelectricity production.