PRODUCTION OF ETHYL BIODIESEL WITH NAOH CATALYSIS FROM RESIDUAL FRYING OIL FROM SELECTIVE COLLECTION IN FOZ DO IGUAÇU/PR

• DOI: 10.22533/at.ed.3172252201119

• Palavras-chave: Biofuel. Ethyl biodiesel. Basic catalysis. Residual frying oil. Selective collect.

• Keywords: Biofuel. Ethyl biodiesel. Basic catalysis. Residual frying oil. Selective collect.

• Abstract:

  The technical and economic feasibility of biodiesel production by ethyl transesterification with homogeneous basic sodium hydroxide catalysis was analyzed, from residual frying oil (ORF) collected by selective collection in Foz do Iguaçu/PR - Brazil. The following mean values ​​were found in the ORF: free fatty acids of 0.52%; specific mass of 912.53 kg/m³; and kinematic viscosity of 34.25 mm²/s. The average yield of the reaction was 87.87%. Biodiesel presented the following average values, meeting the ANP specifications: acidity index of 0.21 mgKOH/g; specific mass of 851.83 kg/m³; and kinematic viscosity of 5.1 mm²/s. The TGA and DTG analyzes indicated a certain homogeneity in the ORF and, for biodiesel, evidence of total conversion of triglycerides into ethyl esters. The investment analysis also showed a favorable result: positive net present value; internal rate of return of 7.01%; profitability index of 1.10; and payback time of 8.86 years.