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

Thus, the result confirm one of the major challenges facing in this project is required a minimum volume of MSW for LFG energy use. The investiments required do not make economic sense at small volumes of MSW as already concluded by some authors. The Tolmasquim’s estimate [30], for example, it would be around 300 t RSU/day. This is due to the low volume of CH 4 present in the biogas, generally assumed to be a percentage of 50. IV. C onclusion The study contributed to reinforce the need to assess and determine the risks of implantating biogas plant projects for energy use. It is strongly recommended that the decision be based on technical and economic feasibility studies. In addition to the balance between income and expenses, future studies indicate the need to use different models to determine the biogas production which should take into account the waste composition and characteristics, climate and other local characteristics. In most municipalities the volume of MSW are relatively small, thus, alternatives such as involving partnerships between them is need in order to ensure a reasonable volume of waste that become energy use viable. Finance policies and incentives for researching and developing new technologies of low costs would be welcome and would contribute to enhance economically the projects’ viability. The benefit of emissions avoided wiht the energy recovering was not evaluated in this study, disregarding economically the probable revenues from the sale of carbon credits. The composting and incineration are practices of waste management that as observed in scenario 2 can contribute to reducing GHG emissions and energy savings. It is worth highlighting the use of renewable source instead of fossil resource generate positive impacts to the environment. Other positive aspect is the impact that this kind of project on job creation for the local population. Thus, the environmental and social aspect of energy production from landfill biogas represents the positive part that can make its implementation feasible. A cknowledgments The authors thank the Coordination for the Improvement of Higher Education Personnel-Ministry of Education (Capes-MEC) for the financial support given to the authors and professor Regina Mambeli Barros for his support during the elaboration of this work. R eferences R éférences R eferencias 1. BRAZIL. Law no. 12305/2010. Establishes the national solid waste policy (PNRS); amends Law no. 9605, of February 12, 1998; and makes other arrangements. Available at: < http://www.planalto.gov.br > Accessed in october 2019. 2. ABNT. Brazilian Association of Technical Standards. NBR 10004 - Solid Waste - Classification. Rio de Janeiro, 2004. 3. ABRELPE. Brazilian association of public companies of cleaning and special waste. Panorama of solid waste in Brazil. São Paulo, 2020. 4. ABRELPE. Brazilian association of public companies of cleaning and special waste. Brazilian atlas of greenhouse gas emissions and energy potential in waste disposal, 2013. Available at: < www.abrelpe.org.br >. Accessed in september 2020. 5. Barros et al., 2014. The electric energy potential of landfill biogas in Brazil. Energy Policy 65, 150-164. 6. EPE. Energy research company. Energy inventory of urban solid waste. Rio de Janeiro, 2014. 7. EPA. United States Environmental protection agency. Greenhouse gas emissions estimation methodologies for biogenic emissions from selected source categories: solid waste disposal wastewater treatment ethanol fermentation, 2010. 8. ANP. National oil agency. Resolution ANP nº 16, 2008. Available at: <http://www.anp.gov.br >. Accessed in September 2020. 9. ENGEBIO ENGENHARIA S/S LTDA. Analysis of the technical, economic and environmental pre- feasibility of biogas energy use at the Contagem landfill: case study. Porto Alegre, 2009. 10. BRAZIL. Law no. 10438/2002. Provides for the expansion of the supply of emergency electric energy, extraordinary tariff recomposition, creates the Incentive for alternative sources of electric energy program (Proinfa). Available at: < http://www.planalto.gov.br > Accessed in october 2019. 11. BRAZIL. Law no. 9427/1996. Establishes the national electric energy agency - ANEEL, regulates the regime of public electricity service concessions and takes other measures. Available at: < http://www.planalto.gov.br > Accessed in october 2020. 12. ANEEL. National electric energy agency. Normative resolution 687/2015. Amends normative resolution no. 482/2012 and the modules 1 and 3 of the distribution procedures - PRODIST. Available at: <http://www2.aneel.gov.br/cedoc/ren2015687.pdf > Accessed in september 2019. 13. ANEEL. National electric energy agency. Normative resolution 271/2007. Changes the wording of articles 1 and 3 of Normative Resolution no. 77, of August 18, 2004. Available at: <http://www2. aneel.gov.br/cedoc/ren2007271.pdf > Accessed in september 2019. 1 Year 2022 63 © 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