Biodiesel and Bioplastic Production from Waste-Cooking-Oil Transesterification: An Environmentally Friendly Approach

Cristina Almeida da Silva, Raíssa Nunes dos Santos, Geiser Gabriel Oliveira, Talita Pereira de Souza Ferreira, Nelson Luis Gonçalves Dias de Souza, Aline Souza Soares, Joece Ferreira de Melo, Carla Jovania Gomes Colares, Ueric José Borges de Souza, Renisson Neponuceno de Araújo-Filho, Raimundo Wagner de Souza Aguiar, Gil Rodrigues dos Santos, Evgeni Evgeniev Gabev and Fabrício Souza Campos
Additional contact information
Cristina Almeida da Silva: Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Raíssa Nunes dos Santos: Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Geiser Gabriel Oliveira: Multipurpose Laboratory I of General Chemistry, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Talita Pereira de Souza Ferreira: Food and Beverage Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Nelson Luis Gonçalves Dias de Souza: Materials Chemistry Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Aline Souza Soares: Molecular Biology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Joece Ferreira de Melo: Multipurpose Laboratory I of General Chemistry, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Carla Jovania Gomes Colares: Department of Exact Sciences and Biotechnology, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Ueric José Borges de Souza: Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Renisson Neponuceno de Araújo-Filho: Department of Forest Engineering, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Raimundo Wagner de Souza Aguiar: Molecular Biology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Gil Rodrigues dos Santos: Phytopathology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil
Evgeni Evgeniev Gabev: Department of Physiology and Pathophysiology, Medical University of Sofia, 1431 Sofia, Bulgaria
Fabrício Souza Campos: Bioinformatics and Biotechnology Laboratory, Campus of Gurupi, Federal University of Tocantins, 77402-970 Gurupi, Brazil

Energies, 2022, vol. 15, issue 3, 1-16

Abstract: Alternative sources of fuel have been a concern in the last few decades. The growth of urbanization and industrialization will lead to the exhaustion of fossil fuels, attracting studies on alternative routes. The main aim of this study was to produce biodiesel from waste cooking oil (WCO) by methyl transesterification using sodium hydroxide as a catalyst. For this, the physicochemical parameters of biodiesel were studied in triplicate (density, acidity, saponification, viscosity, corrosiveness to copper, visual appearance, and cloud point). An analysis by thin layer chromatography and infrared spectrometry was also performed. The increase in yield (83.3%) was directly proportional to the increase in the catalyst (0.22 g of NaOH). The infrared absorption spectra of WCO and biodiesel showed the presence of common and singular bands of each material. Furthermore, a simple and low-cost mechanism was proposed for purifying glycerol. The spectra of glycerol versus purified glycerin showed that the glycerin produced was pure, being used in the formulation of bioplastic. The product was checked for biodegradation and photodegradation, with incredible soil-degradation times of 180 days and photodegradation of only 60 days. In this way, biodiesel production from WCO showed environmentally friendly proposals and applicability. As the next steps, it is necessary to test the biodiesel produced in combustion engines and improve the bioplastic production, including a spectroscopic characterization and extensive biodegradation testing.

Keywords: bioplastic; waste cooking oil; optimization of oil; layer chromatography; infrared spectrometry (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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