Mycoremediation effect of Trichoderma harzianum strain T22 combined with ozonation in diesel-contaminated sand
| Autor: | Marianna Caivano, Ippolito Natale Camele, Salvatore Masi, Hazem S. Elshafie, G. Mazzone, Donatella Caniani, Adriano Sofo |
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| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis Disinfectant 0208 environmental biotechnology Environmental pollution 02 engineering and technology 010501 environmental sciences complex mixtures 01 natural sciences Diesel fuel Soil Bioremediation Ozone Sand Environmental Chemistry Soil Pollutants Petroleum Pollution Mycelium Soil Microbiology 0105 earth and related environmental sciences Trichoderma biology Chemistry Public Health Environmental and Occupational Health Trichoderma harzianum General Medicine General Chemistry Mycoremediation Biodegradation Pulp and paper industry biology.organism_classification Pollution 020801 environmental engineering Biodegradation Environmental Gasoline |
| Zdroj: | Chemosphere. 252 |
| ISSN: | 1879-1298 |
| Popis: | This study aimed to determine the ability of the fungus Trichoderma harzianum strain T22 (Th-T22) to utilize diesel fuel as a carbon source. The potential use of Th-T22 for diesel bioremediation in an artificial soil was tested by inoculating a diesel-sand mixture with a fungal mycelial suspension of Th-T22. Given the ability of ozone to degrade compounds with low biochemical reactivity, the effect of a pre- and post-ozonation was also evaluated. The survival, growth and sporulation of Th-T22 throughout the bioremediation trial were monitored in all the treatments. In the post-ozonation treatments, the biodegradation percentages of diesel removal were 70.16% and 88.35% in Th-T22-inoculated sand treated or untreated with the antibacterial streptomycin, respectively. The results showed that ozonation alone caused good removal efficiencies (41.9%) but it was much more effective if combined with Th-T22 in a post-ozonation regime, whereas pre-ozonation negatively affected the subsequent biodegradation, likely due to its disinfectant and oxidizing effect on Th-T22. The results obtained demonstrated the significant mycoremediation ability of Th-T22 in diesel-contaminated sand and its possible use as a bioremediation agent for diesel spills in polluted sites. |
| Databáze: | OpenAIRE |
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