Decontamination of aged creosote polluted soil: the influence of temperature,white rot fungus Pleurotus ostreatus,and pre-treatment |
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| Affiliation: | 1. Department of Civil, Geological and Mining Engineering, Polytechnique Montreal, H3C 3A7 Montréal, QC, Canada;2. Department of Civil and Environmental Engineering, Nazarbayev University, 010000 Astana, Kazakhstan;3. The Environment and Resource Efficiency Cluster (EREC), Nazarbayev University, 010000 Astana, Kazakhstan;1. West Pomeranian University of Technology, Szczecin, Poland;2. University of Calabria, Rende (CS), Italy;1. Division of Environmental Science and Ecological Engineering, Korea University, Republic of Korea;2. Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, India |
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| Abstract: | This study investigated the effect of inoculation of white rot fungus, Pleurotus ostreatus, temperature and two pre-treatment methods on PAH degradation in aged creosote contaminated soil. It is shown that Pleurotus ostreatus has an overall positive effect on PAH degradation, and that temperature and soil pre-treatment affect this degradation. In general, adding bark and incubating at 22°C before inoculation with white rot fungi has a better effect on PAH degradation than no pre-treatment, or pre-treatment with fertilizer. At low temperature (8°C) fungal inoculation had best effect when fertilizer was not added, and significant effect on degradation on different groups of PAH compounds, except for the more easily degradable compounds, 3-ring PAHs and heterocyclic compounds was obtained. Pre-treatment with fertilizer stimulated microbial activity at low temperature and enhanced PAH degradation even without addition of fungi. |
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