Banca de DEFESA: MAYCO SULLIVAN ARAUJO DE SANTANA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : MAYCO SULLIVAN ARAUJO DE SANTANA
DATE: 19/12/2022
TIME: 14:00
LOCAL: Pós-Graduação em Engenharia Civil
TITLE:

Potential for Methane Generation from Urban Solid Waste from the Landfill in Agreste Alagoano

KEY WORDS:

Potential for MSW methane generation in semi-arid region; BMP test; Gravimetric composition, methane generation modelling.

PAGES: 180
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

The emission of methane gas, generated by the decomposition of solid waste in landfills, is one of the serious problems of atmospheric pollution and one way to minimize the impacts of methane on the environment is through its reuse for energy generation. Although there is wide research on the subject, specific data for semi-arid regions are still scarce. The present research has a proposal to do a survey of the potential of methane gas generation from organic fraction of MSW in Agreste Landfill, which receives waste from 29 cities through the CONAGRESTE consortium, and, through mathematical models applied in LandGEM and Intergovernmental Panel on Climate Change (IPCC) computer programs, to do the theoretical estimation of CH4 production during the useful life of the landfill in two scenarios: one with default values from the programs for the local climate region and the other with information obtained from experimental data. As experimental data studies of the gravimetric composition of the MSW of the involved municipalities were carried out, in order to obtain a representative sample of the deposited waste; physical-chemical analyses of the organic fraction of MSW; and BMP (Biochemical Methane Potential) tests to determine the potential of methane gas generation, kinetic constant of decay (Kexp) and degradable organic carbon (COD). The results show that the gravimetric composition of the MSW of the landfill has the organic matter with the highest index (47.24%), followed by rigid/flexible plastic (22.35%) and sanitary waste (11.06%). In smaller quantities rubber (0.90%), leather (0.22%) and wood (0.20%). In the BPM tests the organic fraction presented potential of CH4 generation, 207.80 NmLCH4/gSV. When adopted standard input data, LandGEM model presented 38% higher value in CH4 production in relation to IPCC model. When considered experimentally obtained input data, IPCC presented CH4 generation 32.66% higher than LandGEM, this was possible due to the COD value that was elevated as a result of the L0 of the organic fraction, going from the theoretical value of 0.15 to the experimental value of 0.27 in the new scenario.

COMMITTEE MEMBERS:
Presidente - 1278948 - MARIA DO CARMO MARTINS SOBRAL
Externa à Instituição - ALESSANDRA LEE BARBOSA FIRMO - IFPE
Externo à Instituição - FRANCISCO SUETONIO BASTOS MOTA - UFC
Externo à Instituição - JOÁCIO DE ARAÚJO MORAIS JÚNIOR - UFPB
Externo à Instituição - SERGIO PERES RAMOS DA SILVA - UPE