Behavior of deteriogenic fungi in aviation fuels (fossil and biofuel) during simulated storage.

Autor: Lobato MR; Fuels and Biofuels Biodeterioration Laboratory (LAB-BIO), Department of Microbiology, Immunology and Parasitology, Federal University of Rio Grande do Sul, Ramiro Barcelos Street # 2600, Building, Porto Alegre, Rio Grande do Sul, 21116, Brazil., Cazarolli JC; Fuels and Biofuels Biodeterioration Laboratory (LAB-BIO), Department of Microbiology, Immunology and Parasitology, Federal University of Rio Grande do Sul, Ramiro Barcelos Street # 2600, Building, Porto Alegre, Rio Grande do Sul, 21116, Brazil., Rios RDF; Fuel Testing Laboratory (LEC), Department of Chemistry, Federal University of Minas Gerais, Presidente Antônio Carlos Avenue #6627, Belo Horizonte, Minas Gerais, Brazil., D' Alessandro EB; Laboratory of Extraction and Separation Methods (LAMES), Institute of Chemistry, Federal University of Goias, Esperança Avenue, IQ-1 Block, Goiânia, Goiás, Goiânia, Brasil., Lutterbach MTS; Laboratory of Biocorrosion and Biodegradation (LABIO), National Institute of Technology (INT), Venezuela Avenue # 82, Rio de Janeiro, Brazil., Filho NRA; Laboratory of Extraction and Separation Methods (LAMES), Institute of Chemistry, Federal University of Goias, Esperança Avenue, IQ-1 Block, Goiânia, Goiás, Goiânia, Brasil., Pasa VMD; Fuel Testing Laboratory (LEC), Department of Chemistry, Federal University of Minas Gerais, Presidente Antônio Carlos Avenue #6627, Belo Horizonte, Minas Gerais, Brazil., Aranda D; GREENTEC- School of Chemistry, Department of Chemical Engineering, Horácio Macedo, Federal University of Rio de Janeiro, Avenue # 2030. Block E, office 211, Rio de Janeiro, Brazil., Scorza PR; Brazilian Union of Biodiesel and Biojetfuel UBRABIO-SHIS QL12, Conjunto 07, Casa 05, Brasilia, Brasilia, Brazil., Bento FM; Fuels and Biofuels Biodeterioration Laboratory (LAB-BIO), Department of Microbiology, Immunology and Parasitology, Federal University of Rio Grande do Sul, Ramiro Barcelos Street # 2600, Building, Porto Alegre, Rio Grande do Sul, 21116, Brazil. fatima.bento@ufrgs.br.
Jazyk: angličtina
Zdroj: Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] [Braz J Microbiol] 2023 Sep; Vol. 54 (3), pp. 1603-1621. Date of Electronic Publication: 2023 Aug 16.
DOI: 10.1007/s42770-023-01055-6
Abstrakt: Biofuels are expected to play a major role in reducing carbon emissions in the aviation sector globally. Farnesane ("2,6,10-trimethyldodecane") is a biofuel derived from the synthesized iso-paraffin route wich can be blended with jet fuel; however, the microbial behavior in farnesane/jet fuel blends remains unknown. The chemical and biological stability of blends should be investigated to ensure they meet the quality requirements for aviation fuels. This work aimed at evaluating the behavior of two fungi Hormoconis resinae (F089) and Exophiala phaeomuriformis (UFRGS Q4.2) in jet fuel, farnesane, and in 10% farnesane blend during simulated storage. Microcosms (150-mL flasks) were assembled with and without fungi containing Bushnell & Haas mineral medium for 28 days at a temperature of 20±2°C. The fungal growth (biomass), pH, surface tension, and changes in the fuel's hydrocarbon chains were evaluated. This study revealed thatthe treatment containing H. resinae showed a biomass of 19 mg, 12 mg, and 2 mg for jet fuel, blend, and farnesane respectively. The pH was reduced from 7.2 to 4.3 observed in jet fuel treatment The degradation results showed that compounds with carbon chains between C 9 and C 11 , in jet fuel, and blend treatments were preferably degraded. The highest biomass (70.9 mg) produced by E. phaeomuriformis was in 10% farnesane blend, after 21 days. However, no significant decrease was observed on pH and surface tension measurements across the treatments as well as on the hydrocarbons when compared to the controls. This study revealed that farnesane neither inhibited nor promoted greater growth on both microorganisms.
(© 2023. The Author(s) under exclusive licence to Sociedade Brasileira de Microbiologia.)
Databáze: MEDLINE
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