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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Proposing blends for improving the cold flow properties of ethylic biodiesel

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Autor(es):
Magalhaes, Ana M. S. [1] ; Pereira, Ericsem [1] ; Meirelles, Antonio J. A. [1] ; Sampaio, Klicia A. [1] ; Maximo, Guilherme J. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Food Engn, Lab Extract Appl Thermodynam & Equilibrium, R Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: FUEL; v. 253, p. 50-59, OCT 1 2019.
Citações Web of Science: 0
Resumo

Despite the several advantages compared to conventional diesel fuel, the biodiesel has poor cold flow properties, limitng its use as a fuel in moderate and cold climates. Considering that the fatty esters profile and the alcohol used affect the biodiesel physico-chemical behavior, this work explored the crystallization/melting profiles of ethyl biodiesel from different oil sources as well as of binary blends among them to improve their cold flow properties. Therefore, model ethyl biodiesels from soybean oil, beef tallow, palm oil, their fractions, olein and stearin, palm kernel, macauba, and macauba kernel oils were formulated by pure ethyl esters, their melting/crystallization temperature, cloud point, pour point, cold filter plugging point and the fraction of crystallized esters analysed. For all cases, blends decreased the cold flow properties of the heavier biodiesel. Soybean oil and tallow biodiesels, economically relevant sources, presented a CFPP of - 4.28 degrees C and 17.12 degrees C, respectively, whilst some alternative sources, such as macauba and palm kernels biodiesels, presented values lower than -15 degrees C, which is more advantageous in cold climates. Tallow biodiesel was the only not in accordance with Regulation Agencies considering cold climates. Macauba and palm kernel oils were especially interesting to decrease the melting/crystallization temperatures of heavier biodiesels, including those from tallow beef. The best blend was those formulated with soybean and macauba kernel oils with a CFPP lower than - 20 degrees C. This work suggested that not only biodiesels mainly composed by unsaturated esters but also by short-saturated esters could significantly improve the cold flow properties of high saturated biodiesel, being a low-cost and feasible alterative. (AU)

Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
Beneficiário:Antonio José de Almeida Meirelles
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 17/16979-7 - Desenvolvimento de metodologias preditivas para o cálculo de propriedades físicas, de equilíbrio e simulação do comportamento fluidodinâmico de óleos e gorduras durante o processo digestivo
Beneficiário:Ericsem Pereira
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 16/08566-1 - Termodinâmica do equilíbrio de fases para o melhoramento das propriedades físicas de bioprodutos alimentícios e sua predição em processos industriais e digestivos
Beneficiário:Guilherme José Maximo
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 16/10636-8 - Da fábrica celular à biorrefinaria integrada Biodiesel-Bioetanol: uma abordagem sistêmica aplicada a problemas complexos em micro e macroescalas
Beneficiário:Roberto de Campos Giordano
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Temático