[Bio-remediation techniques of crude oil contaminated soils].
The bioremediation of soils contaminated by different types of petroleum were carried out with composting process in a prepared bed. By the measures of nutrient- and microbiological agent addition, and moisture- and pH control, an ideal environment for microbes were obtained. When total petroleum hydrocarbons, which consist of thin oil, high condensation oil, special viscous oil, and viscous oil, were in the range of 25.8-77.2 g.kg-1 dry soil, the petroleum removal rate could reach 38.37-56.74% by 2 months operation. The contents of aromatic hydrocarbon, asphaltum and resin were important factors controlling the degradation of petroleum. 6 fungi, 6 bacteria and 1 actinomyces were found to be the dominant strains for petroleum degradation. The results could provide theoretical bases for remediation of soil contaminated by petroleum.
Li
Peijun
P
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016. Lipeijunzh@sina.com
Guo
Shuhai
S
Sun
Tieheng
T
Tai
Peidong
P
Zhang
Chungui
C
Bai
Yuxing
Y
Sun
Qiang
Q
Sheng
Ping
P
D001419:Bacteria / Q000201:enzymology / Q000378:metabolism*; D001673:Biodegradation, Environmental; D017753:Ecosystem; D004785:Environmental Pollutants / Q000378:metabolism*; D004950:Esterases / Q000378:metabolism; D005658:Fungi / Q000378:metabolism; D010578:Petroleum / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*
D004785:Environmental Pollutants; D010578:Petroleum; D012989:Soil Pollutants; D004950:Esterases