Bioremediation of PAH-contaminated soil with fungi - from laboratory to field scale

0440664 - MBÚ 2015 RIV GB eng J - Článek v odborném periodiku
Winquist, E. - Björklöf, K. - Schultz, E. - Räsänen, M. - Salonen, K. - Anasonye, F. - Cajthaml, Tomáš - Steffen, K. - Jorgensen, K.S. - Tuomela, M.
Bioremediation of PAH-contaminated soil with fungi - from laboratory to field scale.
International Biodeterioration & Biodegradation. Roč. 86, č. 2 (2014), s. 238-247. ISSN 0964-8305. E-ISSN 1879-0208
Grant CEP: GA TA ČR TE01020218
Institucionální podpora: RVO:61388971
Klíčová slova: bioremediation * contaminated soil * PAH * field scale
Kód oboru RIV: EE - Mikrobiologie, virologie
Impakt faktor: 2.131, rok: 2014

The purpose of this study was to develop a fungal bioremediation method that could be used for soils heavily contaminated with persistent organic compounds, such as polyaromatic hydrocarbons (PAHs). Sawmill soil, contaminated with PAHs, was mixed with composted green waste (1:1) and incubated with or without fungal inoculum. The treatments were performed at the laboratory and field scales. In the laboratory scale treatment (starting concentration 3500 mg kg(-1), sum of 16 PAH) the high molecular weight PAHs were degraded significantly more in the fungal-inoculated microcosms than in the uninoculated ones. In the microcosms inoculated with Phanerochaete velutina, 96% of 4-ring PAHs and 39% of 5- and 6-ring PAHs were removed in three months. In the uninoculated microcosms, 55% of 4-ring PAHs and only 7% of 5- and 6-ring PAHs were degraded. However, during the field scale (2 t) experiment at lower starting concentration (1400 mg kg(-1), sum of 16 PAH) the % degradation was similar in both the velutina-inoculated and the uninoculated treatments: 94% of the 16 PAHs were degraded in three months. In the field scale experiment the copy number of gram-positive bacteria PAH-ring hydroxylating dioxygenase genes was found to increase 1000 fold, indicating that bacterial PAH degradation also played an important role. (C) 2013 Elsevier Ltd. All rights reserved.
Trvalý link: http://hdl.handle.net/11104/0243770