[Microbial degradation of soil polycyclic aromatic hydrocarbons (PAHs) and its relations to soil bacterial population diversity].
A laboratory simulation test was conducted to study the microbial remediation of soils contaminated by medium and low concentration polycyclic aromatic hydrocarbons (PAHs), and the relationships between the degradation of PAHs and the inoculated and indigenous microbes. The addition of high-effective PAHs-degrading bacteria promoted the biodegradation of soil PAHs, and the effect was remarkable in the first two weeks. The biodegradation of test PAHs was phenanthrene < anthracene < pyrene < benzo [a] pyrene < chrysene, and negatively correlated with the diversity/abundance of soil bacterial population. In the same treatments, soil bacterial population structure varied less with time, and hence, to increase the activity of indigenous microbes would be an effective way to remediate the farmland soils contaminated by medium and low concentration PAHs.
Wang
Fei
F
College of Marine Life Sciences, Ocean University of China, Qingdao, Shandong, China. fly830825@hotmail.com
Su
Zhen-cheng
ZC
Yang
Hui
H
Li
Xiao-jun
XJ
Yang
Guan-pin
GP
Dong
Dian-bo
DB
D001419:Bacteria / Q000145:classification*; D001673:Biodegradation, Environmental; D044822:Biodiversity; D011084:Polycyclic Aromatic Hydrocarbons / Q000378:metabolism*; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000378:metabolism*
D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants