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Author(s): J. M. Dias
J. M. Araújo
J. F. Costa
M. C. M. Alvim Ferraz
M. F. Almeida
Title: Biodiesel production from raw castor oil
Issue Date: 2013
Abstract: A preliminary assessment of castor plant adaptability at Northern Portugal was performed, together with the evaluation of the extracted raw oil, without any refinement, for biodiesel production. Castor was seeded, plants grew and seeds were manually harvested after 2 years. Mechanical and chemical oil extraction procedures were evaluated. Biodiesel was produced by homogenous alkaline transesterification and experimental planning was conducted to evaluate the influence of temperature and reaction time in product yield and quality; 20 experiments were performed. A 54.1% (w/w) oil yield was obtained by Soxhlet extraction with methanol after grinding the seeds. Product yield ranged from 43.3 to 74.1% (w/w), biodiesel quality varied and the conditions that lead to the best product were established. Results indicate that, to achieve higher product yields and quality using raw oil, longer reaction times are required compared to what is generally reported for refined oil. Statistically significant predictive models were obtained to estimate product yield and quality as function of the studied reaction variables. The best temperature and reaction time to produce biodiesel from raw castor oil were 65 degrees C and 8 h, where models predict a product yield of 73.62% (w/w) and a purity of 83.41% (w/w).
Subject: Ciências do ambiente, Engenharia do ambiente
Environmental science, Environmental engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia do ambiente
Engineering and technology::Environmental engineering
Related Information: info:eu-repo/grantAgreement/Agência de Inovação, S.A./Projectos de I&DT em Co-Promoção/SI IDT - 3491/2008/Valorização de Subprodutos de Carnes/FatValue
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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