Benzene series compound facultative anaerobic degrading bacterium

Abstract

The invention belongs to the technical field of degrading microorganisms and relates to a benzene series compound facultative anaerobic degrading bacterium which is characterized in that the invention is microbacterium schleiferi HBSD-C CCTCC No. M209284 and is preserved in China Center for Type Culture Collection at November 27, 2009, and the preservation number is CCTCC No. M209284. The invention has the colony morphology that the benzene series compound facultative anaerobic degrading bacteria is pale yellow, circular, semi-transparent and sunken and has tidy edge and smooth surface; a cell is in a shape of a straight bar and is gram-positive and immobile; and the invention has the main biochemical characteristics that the benzene series compound facultative anaerobic degrading bacterium is oxidase-positive, catalass-positive, nitrate reduction positive, gelatin hydrolysis negative and facultative anaerobic, utilizes glucose, fructose and sucrose without utilizing maltose and grows under the temperature of 4-41 DEG C. The invention can degrade benzene, toluene, xylene and mesitylene under the anaerobic condition and has the degradation rate of 25.9-41.2 percent on benzene series compound 3d with the concentration of 175.8mg / L.

Description

technical field [0001] The invention belongs to the technical field of degrading microorganisms and the technical field of biological treatment of environmental pollutants, and particularly relates to a facultative anaerobic degrading bacteria of benzene series compounds. Background technique [0002] Benzene-based compounds are a class of volatile aromatic hydrocarbon compounds, including benzene, toluene, ethylbenzene, o-, m-, p-xylene, etc. In addition to being present in gasoline fuels, benzene-based compounds are also widely used as raw materials in rubber, Manufacturing of lubricants, dyes, detergents, pharmaceuticals and pesticides (Romy Chakraborty, John D.Coates.2005.Hydroxylationand Carboxylation-Two Crucial Steps of Anaerobic Benzene Degradation by DechloromonasStrain RCB.Applied and environmental microbiology, Sept.2005, p .5427-5432). The content of benzene series compounds in petroleum hydrocarbons is not high, but they are very important. They are the most wa...

AI Technical Summary

Problems solved by technology

However, the rapid consumption of dissolved oxygen in groundwater creates a large number of anaerobic zones for microorganisms. Therefore, many studies have focused on the anaerobic biodegradation of benzene series compounds in the past two decades, but the mechanism of anaerobic degradation is still unclear. fully aware

At the same time, the biodegradation of anaerobic benzene series compounds faces problems such as low degradation reaction capacity and difficult to complete degradation.

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