Journal of Food, Agriculture and Environment

Factorial planning and surface response methodology in oxidative stability evaluation of biodiesel blends from soybean, crambe, babassu and swine fat

Author(s):

Willian Cézar Nadaletti ^{1, 2}*, Reinaldo Aparecido Bariccatti ¹, Helton José Alves ¹, Samuel Nelson Melegari de Souza ¹, Jhonatas Antonelli ¹, Paulo Cremonez ¹, Paulo Belli Filho ², Alvaro Mari Junior ¹

Recieved Date: 2014-01-20, Accepted Date: 2014-04-15

Abstract:

In Brazil, biodiesel is obtained mainly from soybean oil by alkaline trans-esterification process in the presence of methanol. However, being a first generation biodiesel, it may compete with the generation of foods. Soybean oil contains a high percentage of esters of fatty acids with a high degree of unsaturation, which can facilitate the oxidation process of biofuel compromising its storage. Thus, it is necessary to conduct studies that propose alternatives to increase the oxidative stability of biodiesel from soybeans. In this context, the establishment of blends between biodiesel of soy and other types of biodiesels (first and second generation), presents itself as a promising alternative. Due to the presence of significant amount of fatty acids with double bonds, oxidative stability has been found to be of significant concern when the biodiesel is stored over an extended period of time. Degradation by oxidation yields oxidation products that may compromise fuel properties, impair fuel quality and engine performance. Faced with this problem, this paper aimed at evaluating the oxidative stability of biodiesel blends from soybean, crambe, babassu and waste of swine fat by applying a 2³ factorial design and response surface methodology. The tests were carried out using the Rancimat 873, according to the official determination of the oxidative stability in accelerated testing, based on the Induction Period (IP).

Keywords:

Biodiesel, soybean, crambe, babassu, swine fat, oxidative stability

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 2
Category: Environment
Pages: 1030-1032

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