Effect of Sulfur Content on Microbial Composition and Biodegradation of a Brazilian Diesel and Biodiesel Blend (B10)
| Autor: | Camila Correa, Iwona B. Beech, Fatima Menezes Bento, Marco Flôres Ferrão, Akiko Ogawa, Aline Oliboni de Azambuja, Juciana Clarice Cazarolli, Patrícia Dörr de Quadros, Sukriye Celikkol, Juliano Carraro Casagranda, Jan Sunner, Vincent Bonifay, Francielle Bücker |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Biodiesel General Chemical Engineering Energy Engineering and Power Technology Biomass chemistry.chemical_element Fraction (chemistry) Biodegradation Sulfur 03 medical and health sciences Ultra-low-sulfur diesel Diesel fuel 030104 developmental biology Fuel Technology chemistry Organic chemistry Food science Microcosm |
| Zdroj: | Energy & Fuels. 31:12305-12316 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.7b02287 |
| Popis: | Environmental legislation has driven the reduction of sulfur levels in automotive fuels worldwide (≤10 ppm). We evaluate the behavior of microbial biomass in terms of community composition, metabolite production, and degradation of the Brazilian blend B10, made with ultra-low-sulfur diesel (ULSD, 6.3 ppm), high-sulfur diesel (HSD, 327 ppm), and ultra-high-sulfur diesel (UHSD, 861 ppm) during simulated storage. The microcosm was assembled in glass flasks containing an aqueous phase (mineral medium) and an oil phase (fuels) at two conditions of microbial contamination: natural (∼103 colony-forming units (CFU) per liter ) and inoculated (∼106 bacterial cells and fungal spores per milliliter), evaluated each 10 days for 40 days. The results showed that biomass production was more pronounced in inoculated treatment and could be described at T40 as UHSD < ULSD < HSD B10. The higher degradation of terminal methyl ester fraction (50 ± 1%), and aromatic compounds (46 ± 2%) was in HSD B10, and ULSD B10 suffered the... |
| Databáze: | OpenAIRE |
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