Bioremediation of Soil Contaminated with Petroleum Using Forced-Aeration Composting

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 liquid culture medium and the petroleum-contaminated soil samples for incubation of 40 and 50 days, respectively.In the 200-day pilot study, nutrient contents and moisture were adjusted and maintained under aerobic condition 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

作 者： DING KEQIANG LUO YONGMING SUN Tieheng Li Peijun   作者單位： DING KEQIANG(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences, Nanjing 210008, China;Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,Nanjing 210008 China)

LUO YONGMING(Laboratory of Material Cycling in Pedosphere, Institute of Soil Science, the Chinese Academy of Sciences,Nanjing 210008 China)

SUN Tieheng,Li Peijun(Institute of Applied Ecology, the Chinese Academy of Sciences, Shenyang 110015 China) 

刊 名： 土壤圈(意譯名)  ISTIC SCI 英文刊名： PEDOSPHERE  年，卷(期)： 2002 12(2)  分類(lèi)號(hào)： S15  關(guān)鍵詞：