Pedosphere 12(2): 145--150, 2002
ISSN 1002-0160/CN 32-1315/P
©2002 Soil Science Society of China
Published by Elsevier B.V. and Science Press
Bioremediation of soil contaminated with petroleum using forced-aeration composting
DING Ke-Qiang1, LUO Yong-Ming2, SUN Tie-Heng1 and LI Pei-Jun1
1 Institute of Applied Ecology, the Chinese Academy of Sciences, Shenyang 110015 (China)
2 Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008 (China)
      Laboratory simulation studies and a composting pilot study were conducted to evaluate the capacity of three strains of fungi, indigenous fungus Fusarium sp. and Phanerochaete chrysosporium and Coriolus Versicolor, to remediate petroleum-contaminated soils. In laboratory, the fungi were inoculated into a liquidculture medium and the petroleum-contaminated soil samples for incubation of 40 and 50 days 5 respectively. In the 200-day pilot study, nutrient contents and moisture were adjusted and maintained under aerobiccondition in composting units using concrete container (118.5 cm × 65.5 cm × 12.5 cm) designed specially for this study. The laboratory simulation results showed that all the three fungi were effective in degrading petroleum in the liquid culture medium and in the soil. At the end of both the laboratory incubations, the degradation rates by Phanerochaete chrysosporium were the highest, reaching 66% after incubation in liquid culture for 50 days. This was further demonstrated in the composting pilot study where the degradation rate by P. chrysosporium reached 79% within 200 days, higher than those of the other two fungi (53.1% and 46.1%), indicating that P. chrysosporium was the best fungus for bioremediation of soil contaminated with petroleum. Further research is required to increase degradation rate.
Key Words:  bioremediation, composting, fungi, petroleum, soil
Citation: Ding, K. Q., Luo, Y. M., Sun, T. H. and Li, P. J. 2002. Bioremediation of soil contaminated with petroleum using forced-aeration composting. Pedosphere. 12(2): 145-150.
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