Banca de DEFESA: LUIZ AUGUSTO DA SILVA CORREIA
Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.DISCENTE : LUIZ AUGUSTO DA SILVA CORREIA
DATA : 29/07/2019
HORA: 08:00
LOCAL: Auditório do 2° andar do NUPPRAR
TÍTULO:
ENERGY CHARACTERIZATION OF FRUIT AND SEEDS OF Pachira aquatica Aubl. FOR APPLICATION IN THERMO-CHEMICAL CONVERSION PROCESSES
PALAVRAS-CHAVES:
munguba, lignocellulosic biomass, renewable energy, bio-oil, pyrolysis.
PÁGINAS: 75
GRANDE ÁREA: Ciências Agrárias
ÁREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Energia de Biomassa Florestal
RESUMO:
The study of different sources of renewable energy has been intensifying because to the current climate changes, the population increase and the increasing energy demand. Thus, biomass appears as an alternative resource due to its availability and potential of transformation in products and biofuels. Its characterization allows to evaluate its energetic potential for application in energy conversion processes. This work aims at the energetic characterization of the fruit peels of Pachira aquatica Aubl. to evaluate its energy potential for application in thermochemical conversion processes. The energy characterization was carried out from the physical-chemical and thermal characterization of the biomass, it was performed the immediate analysis, for determination the percentage of moisture (ASTM E 871-81), volatile materials (ASTM E 872-85) and ash ( ASTM E 1755-01), in addition to fixed carbon, calculated by difference; the elemental analysis, to determine the percentage of carbon, hydrogen and nitrogen; the apparent density (ASTM E 873-82); the hemicellulose (FDA), cellulose (FDN) and lignin (Klason) content; the thermogravimetric analysis, using thermogravimetric balance model Q600 SDT of TA Instruments®; the spectroscopy in the infrared region, performed in infrared spectrophotometer with Fourier transform; and analytical pyrolysis from a pyrolyzer coupled to gas chromatography. The fruit epicarp biomass of Pachira aquatica presents a lignocellulosic biomass containing 6.58% of moisture,76.90% of volatile material, 5,57% of ash, 11.43% of fixed carbon, apparent density of 252.6 kg/m3 and higher calorific value of 16.24 MJ/kg. It also presents 18.62 of hemicellulose, 45,23% of cellulose and 10.80% of lignin. Chemical compounds identified as products of rapid pyrolysis were mostly oxygenated compounds such as phenols and ketones. The carbonization of the fruit epicarp showed a 32.03% gravimetric charcoal yield, a pyrolignous liquid of 46.53% and a non-condensible gas of 21.44%. The results indicate that the biomass form the fruits peels of Pachira aquatica presents as potential lignocellulosic biomass for application in conversion processes such as pyrolysis and gasification, besides showing compatible characteristics for the production of second generation ethanol.
MEMBROS DA BANCA:
Presidente - 1979301 - RENATA MARTINS BRAGA
Externo à Instituição - ALFREDO ISMAEL CURBELO GARNICA - UFPB
Externa à Instituição - ELANIA MARIA FERNANDES SILVA - UFRN