Biodiesel de óleo de soja produzido a partir de grãos de soja com diferentes teores de água

Abstract

The quest of independence from non-renewable fuels has led to increased research focusing on biofuels. In this work, biodiesel was produced using oil from soybeans as raw material, due to the production scenario in the state of Mato de Grosso. The initial storage of soybean was carried out in different water contents (12, 14 and 16% b.u.). But due to B.O.D.'s internal environment, there was a hygroscopic balance of the grain with water content close to 7% b.u. after 140 days of storage and then the soybean grains were rehumidified to reach different contents and water as 10 and 14% b.u. The extraction of soybean oil was performed from grains with 7, 10 and 14% b.u. water content and was performed by Soxhlet and hexane was used as solvent. The synthesis of biodiesel was carried out by transesterification reaction by methyl route and sodium methoxide as catalyst. The data obtained for oil characterization were compatible with those found in the literature and the analytical parameters evaluated for biodiesel resulted in values in accordance with ANP specifications. H1 NMR data confirmed the conversion of triglycerides to biodiesel. The results indicate that the different water contents did not affect the quality of soybean oil making it a suitable raw material for biodiesel production.