04-10-2017, 10:45 AM
Nature fuels and energy are being continuously depleted to meet and meet the demands of people worldwide, with population growth worldwide, there would be no shortage of fossil fuels and energy. In order to respond to their challenges several scientists have examined, studied and carried out several investigations to produce alternative fuels from waste and many experiments were successful in the production of biogas, biodiesel, electricity from raw material, birds agricultural, domestic and industrial waste. Although the results are obtained, more research is carried out to increase its efficiency, using all possible wastes and innovative methods and techniques not approved. Renewable energy will one day be a large part of global energy production and use. One of those challenges is that of Microbial Fuel Cells (MFC). This technology represents a new form of renewable energy generating electricity from what would otherwise be considered a waste. A fuel cell is an electrochemical device that continuously converts chemical energy into electrical energy while fuel and oxidant are supplied [Shukla et al.2004]. In this sense, biofuel is attractive and promising. Unlike chemical fuel cells, biological fuel cells operate under mild reaction conditions, namely ambient temperature and operating pressure [Roller, et al., 1984]. Biological fuel cells convert the chemical energy of carbohydrates, such as sugars and alcohols, directly into electrical energy; these cells convert the chemical energy of carbohydrates, like sugars and alcohols, directly into electrical energy [Bennetto 1990]. With microbial fuel cells, electrical energy can be extracted directly from organic matter present in the domestic and industrial waste stream by using electron transfer to capture the energy produced by microorganisms for metabolic processes [Logan et al. . 2006]. Objectives: 1. Collection of wastewater samples 2. Physical analysis to determine the composition of the organic compounds present in the wastewater samples. 3. Screening and sedimentation of domestic, sewage and industrial wastewater (detergents) to remove sand and oil suspensions. 4. Fermentation of waste water treated primarily for maximum voltage generation. 5. The content of organic matter in the fermented waste water is evaluated in terms of BOD or COD by rapid oxidation test. 6. Design a fuel cell that can generate more electricity using wastewater samples, graphite electrodes and the salt bridge. 7. Study the influence of pH on the anode environment. 8. Determine the power generated by the fuel cell using the equation P = VI. 9. Use of the energy generated for lighting, charging of coin batteries and also for backing up a cell of hybrid solar panels. 10. The fundamental intention was to generate the maximum amount of electricity from the wastewater samples by objectives previously mentioned that help us to know the results and tabulate the results obtained by conducting a comparative study with and without substrates.