3 documents found, page 1 of 1
Pirólise de agulhas de pinheiro: resultados preliminares
Nascimento, M.; Silva, F.; Pilão, R.; Neto, M.P.; Ribeiro, A.M.(Introdução) As florestas em Portugal ocupam uma área aproximada de 3 224 200 ha, apresentando como espécies predominantes o sobreiro, o pinheiro e o eucalipto (ICNF, 2021). Os pinheiros ocupam cerca de 28 % desta área e geram diversos resíduos, entre os quais as agulhas, que se não forem retiradas das florestas podem agravar o problema dos incêndios florestais (Omvesh et al., 2023). A energia proveniente de re...
Co-pyrolysis of brown macroalgae and pinecones in a fixed bed reactor
Silva, F.T.; Nascimento, M.; Pilão, R. M.; Neto, M.P.; Ribeiro, A.M.This study presents results on the slow co-pyrolysis of Laminaria digitata (LD) and pinecones (PC), at an average temperature of 560 °C, for mass ratios LD/PC of 100/0, 50/50, 30/70, 10/90 and 0/100. The biochar yields varied from 35.3 to 31.2 %, for bio-oils, the yields were in the range of 23.3 to 39.9 %, and for the gas phase, between 41.4 to 28.9 %, as the amount of PC increased in the feeding mixture. The ...
Influence of the operating temperature on the slow pyrolysis of pinecones
Nascimento, M.; Silva, F.; Pilão, R.M.; Neto, M.P.; Ribeiro, A.M.This study investigated the production of biochars, bio-oils and non-condensable gas from pinecones through pyrolysis. The effect of temperature on the yields of the three phases and their characterization was studied. Char yield varied from 39.7 to 29.5 % and gas yield increased from 22.1 to 33.9 % as temperature rose from 408 to 661 ºC. Bio-oil yield increased from 38.3% at 408 ºC to 39.9 % at 562 ºC and then...