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Journal of Chemistry
Volume 2015, Article ID 265160, 6 pages
Research Article

Characterization of the Fatty Acids Present in Wastewaters from Production of Biodiesel Tilapia

1Departamento de Engenharia Hidráulica e Ambiental, Centro de Tecnologia, Universidade Federal do Ceará, Avenida Humberto Monte S/N, Campus do Pici, Bloco 713, 60451-970 Fortaleza, CE, Brazil
2Fundação Núcleo de Tecnologia Industrial do Ceará (NUTEC), Rua Rômulo Proença S/N, Campus do Pici, Bloco 713, 60451-970 Fortaleza, CE, Brazil
3Departamento de Química Analítica e Físico-Química, Universidade Federal do Ceará (UFC), Bloco 940, Avenida Humberto Monte S/N, Campus do Pici, 60451-970 Fortaleza, CE, Brazil

Received 13 June 2014; Accepted 9 November 2014

Academic Editor: Rivelino M. Cavalcante

Copyright © 2015 Erika de A. S. Braga et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Biodiesel obtained from oil extracted from the viscera of tilapia is a viable alternative in the replacement of petroleum fuels. However, during the purification step is performed biodiesel washing water is performed, which generates high effluent pollutant loads due to the reagents used and the very composition of the raw material. This study aims to characterize the fatty acids present in water from washing of the process of purifying biodiesel tilapia (Oreochromis niloticus). Fatty acid compositions were determined using gas chromatography (GC-FID). The results showed that the fatty acids present in greater quantities in the effluent were lauric (C12: 0), followed by myristic (C14: 0), palmitic (C16: 0), oleic (C18: 1), stearic (C18: 0), linolenic (C18: 3), and linoleic (C18: 2) acids. Therefore, the levels of oil and grease found in the rinse water from washing of the oil biodiesel tilapia are far above the allowed values above; thus they do not comply with Brazilian federal regulations.