title: Biodiesel production using fatty acids from food industry waste using corona discharge plasma technology.
abstract: This article aims to describe an alternative and innovative methodology to transform waste, frying oil in a potential energy source, the biodiesel. The biodiesel was produced from fatty acids, using a waste product of the food industry as the raw material. The methodology to be described is the corona discharge plasma technology, which offers advantages such as acceleration of the esterification reaction, easy separation of the biodiesel and the elimination of waste generation. The best conditions were found to be an oil/methanol molar ratio of 6:1, ambient temperature (25 °C) and reaction time of 110 min and 30 mL of sample. The acid value indicates the content of free fatty acids in the biodiesel and the value obtained in this study was 0.43 mg KOH/g. Peaks corresponding to octadecadienoic acid methyl ester, octadecanoic acid methyl ester and octadecenoic acid methyl ester, from the biodiesel composition, were identified using GC-MS. A major advantage of this process is that the methyl ester can be obtained in the absence of chemical catalysts and without the formation of the co-product (glycerin).
authors.affiliation: UNA - PCA, Articulation Academic Unit of Production, Construction and Agribusiness, Environmental Engineering, University of Southern Santa Catarina - UNISUL, Avenue Pedra Branca, 25, CEP: 88279900, Palhoça, SC, Brazil. Electronic address: anelisecubas@gmail.com.
authors.forename: A L V
authors.initials: AL
authors.lastname: Cubas
authors.affiliation: Environmental Engineering, University of Southern Santa Catarina (Unisul), CEP 80137270, Palhoça, SC, Brazil; Post Graduation in Environmental Engineering, Federal University of Santa Catarina (UFSC), CEP 88040900, Florianópolis, SC, Brazil.
authors.forename: M M
authors.initials: MM
authors.lastname: Machado
authors.affiliation: Post Graduation in Environmental Engineering, Federal University of Santa Catarina (UFSC), CEP 88040900, Florianópolis, SC, Brazil.
authors.forename: C R S C
authors.initials: CR
authors.lastname: Pinto
authors.affiliation: Environmental Engineering, University of Southern Santa Catarina (Unisul), CEP 80137270, Palhoça, SC, Brazil; Departament of Science and Technology of Food, Federal University of Santa Catarina (UFSC), CEP 88034001, Florianópolis, SC, Brazil.
authors.forename: E H S
authors.initials: EH
authors.lastname: Moecke
authors.affiliation: Production Engineering, University of Southern Santa Catarina (Unisul), CEP 80137270, Palhoça, SC, Brazil.
authors.forename: A R A
authors.initials: AR
authors.lastname: Dutra
mesh_terms: D056804:Biofuels / Q000032:analysis*; D005227:Fatty Acids / Q000737:chemistry*; D019649:Food Industry; D008401:Gas Chromatography-Mass Spectrometry; D007220:Industrial Waste / Q000032:analysis*; D010865:Pilot Projects; D058626:Plasma Gases / Q000737:chemistry; D018505:Waste Management / Q000295:instrumentation / Q000379:methods*
chemical_list: D056804:Biofuels; D005227:Fatty Acids; D007220:Industrial Waste; D058626:Plasma Gases
keywords: Biodiesel; Corona discharge plasma; Fatty acids; Methyl esters; Waste frying oil