Influence of fatty acid composition of raw materials on biodiesel properties

Ramos, María Jesús; Fernández, Constantino Arce; Casas, Abraham; Rodríguez, Juan F.; Pérez, Ángel

doi:10.1016/j.biortech.2008.06.039

Cited by 1,609 publications

(947 citation statements)

References 36 publications

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“…Furthermore, the oxidation stability decreased with the increase of the content of polyunsaturated methyl esters. Biodiesel of almond, olive, corn, rapeseed and high oleic sunflower oils had the global better properties because they have the greater monounsaturated content (Ramos et al, 2009;Sharma and Singh, 2009). …”

Section: Resultsmentioning

confidence: 99%

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Comparison of the Biodiesel Quality Produced from Refined Sunflower (Helianthus Annuus L) Oil and Waste Cooking Oil

Saydut

Kafadar

Tonbul

et al. 2010

Energy Exploration & Exploitation

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A major hurdle in commercialization of biodiesel from vegetable oil, in comparison to petroleum-based diesel fuel, is its cost of manufacturing, primarily the raw material cost. Waste cooking oil is one of the economical sources for biodiesel production. NaOH and KOH catalyzed processes for prepared of biodiesel expressed of fatty acid methyl ester were comparatively studied for refined sunflower (Helianthus annuus L) oil and waste cooking oil. Transesterification was carried out using 100% excess methanol; i.e. molar ratio of methanol to oil is 6:1 and catalyst concentration of 0.5% at 60 o C. Fuel properties and specifications such as viscosity, flash point, cloud point, pour point, density, cetane number, and acidic value are determined and compared to each other and petroleum diesel. This study characterizes the fuel properties of biodiesel produced from refined sunflower oil and waste cooking oil using two different catalysts (NaOH and KOH) to provide a comprehensive understanding of biodiesels.

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Section: Resultsmentioning

confidence: 99%

“…The procedure involves titration of the diluted sample with ethanolic potassium hydroxide solution using a Metrohm 702 SM Titrino. This procedure was developed according to UNE-EN 14104 (Ramos et al, 2009;Casas et al, 2010) …”

Section: Experimental 21 Production Procedures For Biodieselmentioning

confidence: 99%

Comparison of the Biodiesel Quality Produced from Refined Sunflower (Helianthus Annuus L) Oil and Waste Cooking Oil

Saydut

Kafadar

Tonbul

et al. 2010

Energy Exploration & Exploitation

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“…Among them, biodiesel appears a promising fuel as it is prepared from renewable sources, such as vegetable and animal fats. [1][2][3][4] The physical chemical characteristics of biodiesel are similar to those of common diesel, [5][6][7] so that it can be directly used in diesel engines, requiring no modifications of these devices. 8 Biodiesel also presents some other advantages: (i) non-toxic and biodegradable, (ii) high flash point and (iii) less polluting gas emissions.…”

Section: Introductionmentioning

confidence: 99%

“…8 Biodiesel also presents some other advantages: (i) non-toxic and biodegradable, (ii) high flash point and (iii) less polluting gas emissions. [1][2][3][9][10] Biodiesel is produced by a relatively simple reaction known as transesterification, where natural oils and fats made up mainly of triglycerides react with a simple alcohol, such as methanol or ethanol, in the presence of a catalyst, to produce mono alkyl esters of fatty acids. [1][2]11 In order to guarantee the quality of the biodiesel several parameters must be determined, among them the acid number which is defined as the quantity, in milligrams of KOH, necessary to neutralize one gram of biodiesel.…”

Section: Introductionmentioning

confidence: 99%

A green method for determination of acid number of biodiesel

Tubino¹,

Aricetti²

2011

J. Braz. Chem. Soc.

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Neste trabalho é proposto um método simples e verde para a determinação do índice de acidez do biodiesel. A amostra é dissolvida em solução 1:1 v/v etanol:água, evitando a mistura tolueno:isopropanol:água (1:0,95:0,5 v/v/v) usada nas normas atuais. A titulação é realizada com uma solução aquosa de NaOH 0,02 mol L -1 . O método foi comparado com o da ABNT NBR 14448, que é similar ao do ASTM D 664 e do EN 14104. A comparação estatística utilizando o teste pareado t de student e o teste F de Snedecor mostrou que o método proposto oferece resultados equivalentes ao método da norma ABNT NBR 14448, apresentando maior precisão.A simple green method for the determination of the acid number of biodiesel is described. The sample is dissolved in a 1:1 v/v ethanol:water mixture, avoiding the use of the usual toluene:isopropanol:water mixture (1:0.95:0.5 v/v/v). The titration is performed with a 0.02 mol L -1 NaOH solution in water. The method was compared with that of ABNT NBR 14448, which is similar to ASTM D 664 and to EN 14104. A statistical comparison using the student's t test and the Snedecor F test showed that the proposed method offers equivalent results to ABNT NBR 14448, with better precision.

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“…As taxas relativas de oxidação apresentadas na literatura são: 1 para oleato de metila, 41 para linoleato de metila e 98 para linolenato de metila (KNOTHE, 2005;KNOTHE et al, 2006). Assim, matérias-primas ricas nos ácidos linoleico e linolênico, tais como soja e girassol, tendem a apresentar baixa estabilidade à oxidação, enquanto que matérias-primas com baixo teor desses ácidos graxos, tais como palma, azeite e óleo de amêndoas, geralmente apresentam melhor estabilidade (RAMOS et al, 2009 2000;RAMOS et al, 2003;KNOTHE, 2005).…”

Section: Processos De Produção De Biodieselunclassified

Produção enzimática de biodiesel em reator de leito fluidizado a partir da etanólise do óleo de babaçu: estabelecimento das condições reacionais e operacionais

Fidalgo¹

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Influence of fatty acid composition of raw materials on biodiesel properties

Cited by 1,609 publications

References 36 publications

Comparison of the Biodiesel Quality Produced from Refined Sunflower (Helianthus Annuus L) Oil and Waste Cooking Oil

Comparison of the Biodiesel Quality Produced from Refined Sunflower (Helianthus Annuus L) Oil and Waste Cooking Oil

A green method for determination of acid number of biodiesel

Produção enzimática de biodiesel em reator de leito fluidizado a partir da etanólise do óleo de babaçu: estabelecimento das condições reacionais e operacionais

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