Mineralization and conversion of pentachlorophenol (PCP) in soil inoculated with the white-rot fungus Trametes versicolor
| Autor: | Marja Tuomela, Annele Hatakka, Merja Lyytikäinen, Pekka Oivanen |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
0303 health sciences
biology 030306 microbiology Chemistry Ecology Soil Science Mineralization (soil science) 010501 environmental sciences Biodegradation biology.organism_classification complex mixtures 01 natural sciences Microbiology Soil contamination 6. Clean water respiratory tract diseases Incubation period Pentachlorophenol 03 medical and health sciences chemistry.chemical_compound Bioremediation Environmental chemistry Incubation 0105 earth and related environmental sciences Trametes versicolor |
| Zdroj: | University of Helsinki |
| ISSN: | 0038-0717 |
| DOI: | 10.1016/s0038-0717(98)00106-0 |
| Popis: | The fate of pentachlorophenol (PCP) in autoclaved soil supplemented with straw and inoculated with the white-rot fungus Trametes versicolor was investigated. Inoculated flasks were incubated for 0 to 42 d and control flasks for 0 to 28 d. Mineralization and volatilization of PCP and its transformation products were measured using 14 C-labelled PCP for radiorespirometry and extraction analysis, and non-labelled PCP to monitor by use of gas chromatography transformation products of PCP. After incubation soil was extracted with water, dioxane, alkali (KOH–methanol) and the residue was combusted. PCP was analyzed from all extracts and its transformation products were analyzed from both water and dioxane fractions. During 42 d of incubation T. versicolor mineralized 29% of the PCP. The concentration of non-labelled PCP decreased to 4% of its original value during the incubation period. Only trace amounts of anisoles such as pentachloroanisole (PCA) and 2,3,4,6-tetrachloroanisole (2,3,4,6-TeCA) were formed during incubation. Part of the 14 C-label was alkali-extractable, indicating that it was bound to humic substances, but this part was apparently later attacked and mineralized by the fungus. Results suggest that the treatment of PCP polluted soils with T. versicolor is a possibility. |
| Databáze: | OpenAIRE |
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