Authors:
Jie He
;
Huan Liu
;
Xiaoru Fan
;
Yuan Liu
and
Haifeng Wei
Affiliation:
College of Marine Technology and Environment, Dalian Ocean University，Dalian, Key Laboratory of Nearshore Marine Environmental Science and Technology in Liaoning Province, Dalian Ocean University and Dalian, China
Keyword(s):
Microorganisms, crude oil, physicochemical properties of soil
Abstract:
There are a lot of microorganisms in crude oil polluted beaches, which have a great influence on the physicochemical properties of sediment. In this paper, Y3 (Pseudomonas putida) as the experimental object, the sediment contamination test with different crude oil concentrations (0, 4000, 8000, 12000, 16000, 20000 mg/kg), the sediment pH, total nitrogen, total phosphorus, total organic carbon (TOC) and sediment dehydrogenase activity were studied to investigate the effect of the microorganism on the physicochemical properties of the sediment before and after the addition of Y3 (Pseudomonas putida). The results showed that Y3 (Pseudomonas putida) had little effect on sediment pH; sediment TOC increased and dehydrogenase activity increased significantly; total nitrogen content did not change significantly, and total phosphorus content fluctuated with crude oil concentration. These showed that Y3 (Pseudomonas putida) have a certain influence on the physicochemical properties of sediment
polluted by crude oil.
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