Nile tilapia industrialization waste: Evaluation of the yield, quality and cost of the biodiesel production process
| Autor: | J. I. Engelmann, Tito R.S. Cadaval, Paola Silveira Moraes, Luiz Antonio de Almeida Pinto, Andrei V. Igansi |
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| Rok vydání: | 2021 |
| Předmět: |
Acid value
020209 energy Strategy and Management 02 engineering and technology complex mixtures Industrial and Manufacturing Engineering chemistry.chemical_compound Nile tilapia 0202 electrical engineering electronic engineering information engineering 0505 law General Environmental Science Biodiesel Potassium hydroxide biology Renewable Energy Sustainability and the Environment Chemistry 05 social sciences food and beverages Building and Construction Transesterification Factorial experiment Pulp and paper industry Fish oil biology.organism_classification Biodiesel production 050501 criminology |
| Zdroj: | Journal of Cleaner Production. 287:125041 |
| ISSN: | 0959-6526 |
| DOI: | 10.1016/j.jclepro.2020.125041 |
| Popis: | The biodiesel produced from Nile tilapia waste consists of an alternative material for sustainable energy production, meeting the growing energy demand without damaging the environment, being this fish waste is often disposed in the inadequate form. The aim of this work was to investigate the biodiesel production from fish oil extracted from Nile tilapia processing waste (heads), through a full factorial experimental design. The biodiesel production was carried out by homogeneous alkaline transesterification using ethanol, and potassium hydroxide (KOH) as the catalyst. The best condition of biodiesel production was evaluated as a function of the catalyst concentration, oil:ethanol molar ratio and reaction time, according to the factorial design and the responses were yield, production cost, acid value, and kinematic viscosity. The maximum yield of biodiesel was 92% (w w−1), this result was obtained with KOH 2% (w w−1), molar ratio of 1:12 (oil: ethanol) and reaction time of 4 h. This condition also ensured a product with lower VA (0.63 mgKOH g−1), lower kinematic viscosity (2.78 mm2 s−1), and a low cost of biodiesel production (0.17 US$ kg−1). TLC and FTIR analyses pointed out that the triglycerides of the fish oil were converted into biodiesel. The fatty acids profiles for the crude oil, bleached oil and biodiesel from Nile tilapia oil were determined by gas chromatography and, they have not presented significant differences in their percentage values. Based on the lipid profile obtained, Nile tilapia oil showed suitable characteristics, being a promising source for biodiesel obtainment. This study showed that bleached oil from Nile tilapia heads stands out as a promising source for producing biodiesel with high yield, positive economic potential, and better physicochemical properties. |
| Databáze: | OpenAIRE |
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