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Article

Microbial Degradation of Different Hydrocarbon Fuels with Mycoremediation of Volatiles

1
Institute of Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Herman O. St. 15, 1022 Budapest, Hungary
2
Civil and Environmental Engineering Department, Water and Environmental Research Center, University of Alaska Fairbanks, P.O. Box 755900, Fairbanks, AK 99775-5900, USA
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(2), 163; https://doi.org/10.3390/microorganisms8020163
Received: 28 December 2019 / Revised: 20 January 2020 / Accepted: 22 January 2020 / Published: 23 January 2020
(This article belongs to the Section Environmental Microbiology)
Naturally occurring microorganisms in soil matrices play a significant role in overall hydrocarbon contaminant removal. Bacterial and fungal degradation processes are major contributors to aerobic remediation of surface contaminants. This study investigated degradation of conventional diesel, heating diesel fuel, synthetic diesel (Syntroleum), fish biodiesel and a 20% biodiesel/diesel blend by naturally present microbial communities in laboratory microcosms under favorable environmental conditions. Visible fungal remediation was observed with Syntroleum and fish biodiesel contaminated samples, which also showed the highest total hydrocarbon mineralization (>48%) during the first 28 days of the experiment. Heating diesel and conventional diesel fuels showed the lowest total hydrocarbon mineralization with 18–23% under favorable conditions. In concurrent experiments with growth of fungi suspended on a grid in the air space above a specific fuel with little or no soil, fungi were able to survive and grow solely on volatile hydrocarbon compounds as a carbon source. These setups involved negligible bacterial degradation for all five investigated fuel types. Fungal species able to grow on specific hydrocarbon substrates were identified as belonging to the genera of Giberella, Mortierella, Fusarium, Trichoderma, and Penicillium. View Full-Text
Keywords: biodegradation; fungal remediation; biodiesel; hydrocarbon degradation biodegradation; fungal remediation; biodiesel; hydrocarbon degradation
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MDPI and ACS Style

Horel, A.; Schiewer, S. Microbial Degradation of Different Hydrocarbon Fuels with Mycoremediation of Volatiles. Microorganisms 2020, 8, 163. https://doi.org/10.3390/microorganisms8020163

AMA Style

Horel A, Schiewer S. Microbial Degradation of Different Hydrocarbon Fuels with Mycoremediation of Volatiles. Microorganisms. 2020; 8(2):163. https://doi.org/10.3390/microorganisms8020163

Chicago/Turabian Style

Horel, Agota, and Silke Schiewer. 2020. "Microbial Degradation of Different Hydrocarbon Fuels with Mycoremediation of Volatiles" Microorganisms 8, no. 2: 163. https://doi.org/10.3390/microorganisms8020163

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