Rhodococcus sp. 2G used for simultaneous degradation of plurality of phthalic acid esters

Abstract

The invention belongs to the technical field of environmental pollutant biological treatment, and specifically discloses rhodococcus sp. 2G used for simultaneous degradation of a plurality of phthalic acid esters (PAEs). The rhodococcus sp. 2G is preserved at China Center for Type Culture Collection (CCTCC) on 22th, Jan., 2015, and preservation number is CCTCC No.M 2015056. The rhodococcus sp. 2G is high in activity, and is capable of realizing growth and breeding by taking a plurality of PAEs as the only carbon source and energy; complete degradation of PAEs mixed with a inorganic salt culture medium at a ratio of 200mg / kg can be almost realized in 7 days by the rhodococcus sp. 2G under pure culture conditions; the rhodococcus sp. 2G is widely distributed in the natural world; adaptability is high; culture collection is enlarged greatly, and the rhodococcus sp. 2G possesses a promising application prospect in biological treatment of environmental pollutants.

Description

technical field [0001] The invention relates to the technical field of biological treatment of environmental pollutants, more specifically, relates to a strain of Rhodococcus ( Rhodococcus sp. ) 2G. Background technique [0002] Phthalates (PAEs), also known as phthalates, are the most common plasticizers in the plastics industry. It is widely used in the production of polymer plastic products in daily life and industry, such as polyvinyl chloride (PVC), polypropylene (PP), foam, and can also be added to cosmetics, adhesives, paints, and inks. As a plasticizer, the content of PAEs in plastic products accounts for about 20-30%, sometimes as high as 50%. In order to improve the necessary plasticity of plastic products, PAEs are not covalently polymerized into the matrix of plastic products, but are connected with polyolefin plastic molecules by hydrogen bonds or van der Waals forces, and retain their relatively independent chemical properties. Therefore, as time goes by, PA...

AI Technical Summary

Problems solved by technology

In recent years, there has been a lot of research on the use of bacteria to degrade PAEs. A large number of highly efficient PAEs-degrading strains have been isolated from various environments such as mangroves, soils, oceans, rivers, and activated sludge from wastewater treatment plants. However, most of them have been reported All the degrading bacteria only have efficient degradation ability to one kind of phthalates, and can efficiently degrade short-chain PAEs (such as DMP, DEP, etc.) and long-chain PAEs (such as DBP, DEHP, etc.) Germplasm resources of degrading bacteria are rarely found

Images