Óleo extraído das vísceras da tilápia do Nilo: pré-tratamento, adequação e produção de biodiesel

Abstract

According to the United Nations Food and Agriculture Organization, Brazil is among the world's largest fish producers, with an estimated production of 20 million tons in 2030. The state of Ceará stands out in the production of Tilapia of Nilo (Oreochromis niloticus). As more fish are processed, the quantity of by-products such as viscera increases. A possible reuse would be the obtaining of fish oil, from the viscera, for the production of biodiesel. The use of different raw materials to obtain biodiesel is becoming increasingly common in the producing plants. However, storage conditions directly affect the physical and chemical properties of the oil. The objective of this work was to outline a methodology for the treatment of fish oil stored for approximately 18 months in order to produce biodiesel, with a focus on reducing the acidity index, as well as the characterization of other properties such as specific mass, moisture, viscosity and visual aspect of both the oil and biodiesel produced. The standard followed is in accordance with ANP Resolution No. 45, dated 8.25.2014, adopted by the National Agency of Petroleum, Natural Gas and Biofuels (ANP). After the treatment. the fish oil had its acidity index reduced in about 97%. All measured properties are within the required parameters required by the ANP.