Banca de QUALIFICAÇÃO: LUCIO CESAR DANTAS DE MEDEIROS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : LUCIO CESAR DANTAS DE MEDEIROS
DATA : 24/09/2018
HORA: 09:30
LOCAL: Escola Agrícola de Jundiaí - Prédio da Direção
TÍTULO:

EFFECT OF PYROLYSIS HEATING RATE ON CHEMICAL COMPOSITION OF WOOD VINEGAR FROM Eucalyptus urograndis) AND Mimosa tenuiflora

PALAVRAS-CHAVES:

Heating rate, wood vinegar, charcoal

PÁGINAS: 25
GRANDE ÁREA: Ciências Agrárias
ÁREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Energia de Biomassa Florestal
RESUMO:

Among the parameters used on the biomass carbonization process,the heating velocity presents itself as 
one of the most important. In face of it, the purpose of this study was to evaluate the influence of 
different heating velocities on the gravimetric yields in charcoal, condensable fluids and non-condensable
 gases. The eucalyptus (Eucalyptus urophylla x grandis) and black jurema (Mimosa tenuiflora) woods were
used, shaped as disks with variable diameters and dried. The carbonization occurred in a muffle type
 electric oven for three distinct heating velocities: 1.46, 0.97 and 0.73 °C/min. 
The BioEstat software version 5.3 was employed to perform the normality test and Shapiro Wilk, 
and subsequently the averages were compared by Tukey's test to the 5% significance level. 
The collected pyrollenous extract was analyzed by gas chromatography coupled to the mass spectrum ]
(GC-MS). The results showed that smaller heating velocities produce bigger yields in charcoal, 
while higher heating velocities lead to bigger yields in condensable fluids. 
As well as the increase of the heating rate increased the content of furans and pyran and 
decreased the content of phenolic compounds. With this, it is concluded that the choice of 
the heating rate should be carried out according to the main interest of the production.

MEMBROS DA BANCA:
Interno - 1079298 - ALEXANDRE SANTOS PIMENTA
Interno - 1979301 - RENATA MARTINS BRAGA
Interno - 2326526 - TATIANE KELLY BARBOSA DE AZEVEDO CARNAVAL