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Publicação
Produção de biodiesel a partir de óleo de sementes de cardo
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| Dissertação | 6.21 MB | Adobe PDF | ||
| Anexo | 61.87 KB | Adobe PDF |
Autores
Resumo(s)
In this work, was investigated the use of oil from cardoon seeds (Cynara cardunculus, L.), for
biodiesel production.
The cardoon seeds contain 24% of oil, and 7.8% dry matter (dry basis). The oil had a free
fatty acid content of 0.6%, an iodine index of 122, saponification value of 200, and cetane
number of 46.14.
The production of Fatty Acid Methyl Esters (FAME) was obtained by transesterification of
crude cardoon oil with methanol in the presence of a catalyst (sodium methoxide), for 120
minutes, following a central composite rotatable design. The temperature ranged from 26ºC
to 94ºC, the amount of sodium methoxide was between 0.12% and 2.5% (m/m), and the
molar ratio methanol/oil was from 0.95:1 to 11:1. Modeling alcoholysis and optimization of
reaction conditions were carried out at a lab-scale via Response Surface Methodology.
The estimated yield in FAME (97%) was obtained after 30 minutes, at 52ºC, for a molar ratio
of 6.4:1 and a 1.4% of catalyst. The lab-scale model validation obtained 94% of FAME after
30 minutes. The yield of 88% FAME was obtained at pilot scale after 90 minutes under the
optimized conditions. After purification the biodiesel showed high quality according to DIN EN
14214.
Descrição
Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia
Palavras-chave
biodiesel cardoon oil alcoholysis fatty acid methyl esters response surface methodology transesterification óleo de cardo alcoólise esteres metilicos de ácidos gordos metodologia das superficies de resposta transesterificação