Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 22 Issue 1

Fig. 3: Simplified diagram of biogas capture and treatment process [9] Landfilling as a method of MSW disposal management does not contribute to a significant reduction in the volume of accumulated waste. Other alternatives, as incineration for example, are more efficient for reduce the amount of wastes that go to landfills. The continuous disposal of waste will definitely end up depleting the landfill's volume capacity. Investments into plant of producting electricity from energy recovery of biogas should be considered important strategies for energy policies: as renewable energy sources and as an added benefit of avoid GHG emissions. The government should make more efforts to promote improvements, incentive programs, laws and policies. The Federal Law 10438/2002 [10], for example, has the objective of expanding the use of renewable energy. Through the Federal Law 9427/1996 [11], public or private companies that operate the landfill can organize itself as a self-producer or independent producer. Two normative could also improve the economic viability of producing electricity from MSW: revenues from the sale of electricity or in the compensation scheme, with permit a reduction in the value of the electricity bill, as provided the Normative Resolution 687/2015 [12]; free fee of use of electrical transmission and distribution systems, as characterized in the Normative Resolution 271/2007 [13]. II. M aterials and M ethods The option adopted to select the municipality of Jacarei to be addressed in this study was based on the document "Study on the potential of energy generation from waste (garbage, sewage)", in order to increase the use of biogas as an alternative of renewable energy source [14]. These criteria take into account the population data of the city (population greater than 200,000 inhabitants), as well as the minimum amount of waste necessary to enable projects to recover biogas from landfills for the purposes of energy generation and biogas production. It is also considered a potential production for a period of at least fifteen years. As this study intend to evalution the potential for producing biogas from urban solid waste for generate eletricity purpose, the data needed are: waste demand, considering population growth, year of start and end of waste disposal, gravimetric composition of the waste, climate, temperature and rainfall in the city, among others. These informations were based on the Municipal Plan for Integrated Solid Waste Management – PMGIRS referring to the municipality of Jacarei [15]. a) Characterization of the municipality of Jacareí The municipality of Jacareí is located in the Paraíba Valley, between Rio-São Paulo, 80 km from the capital of São Paulo and 350 km from Rio de Janeiro. The area is 464 km 2 . The latitude and longitude coordinates are: - 23º 18' 10’ south and - 45º 17' 31" west. Its altitude varies between 567 to 730 meters. The time zone is UTC-3. The population according to 2010 census was 211,214 thousand inhabitants. The city's climate is tropical from altitude to subtropical, with dry winter. The temperature presents an annual average of 21°C. July is the coldest month, temperature around 13°C and Februar is the hottest, temperature around 25°C. The annual rainfall index is around 1.475mm.The geographic location is shown in Fig. 4. 1 Year 2022 55 © 2022 Global Journals Global Journal of Science Frontier Research Volume XXII Issue ersion I VI ( H ) Energetic Potential of the Biogas from Urban Solid Waste Generated in the Jacareí Municipal Landfill, Brazil