Mixed polycyclic aromatic hydrocarbon degrading bacterium G3 suitable for variable environment and application thereof

By screening and identifying Xanthomonas spp. G3 strains, the degradation problem of polycyclic aromatic hydrocarbons (PAHs) under complex environmental factors and mixed pollutant conditions was solved, achieving efficient bioremediation in variable environments, especially significantly degrading PAHs in aging soils.

CN121801748APending Publication Date: 2026-04-07INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
0 Cites 0 Cited by

Patent Information

Application Number
CN202511934103.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-20
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

In existing technologies, polycyclic aromatic hydrocarbon pollutants are difficult to degrade effectively under complex environmental factors and mixed pollutant conditions, which limits the application of bioremediation technologies.

Method used

A strain of Pseudoxanthomonas sp. G3 was screened and identified, which can efficiently degrade mixed polycyclic aromatic hydrocarbons, including acenaphthene, fluorene, phenanthrene, fluoranthene, and pyrene, under variable environmental conditions, and degrade anthracene through cometabolism.

Benefits of technology

Strain G3 exhibited highly efficient degradation capabilities for mixed polycyclic aromatic hydrocarbons under different temperature, salinity, and pH conditions, significantly improving the environmental adaptability and degradation efficiency of bioremediation technology, especially demonstrating significant pollutant removal effects in aging soils.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to the technical field of environmental remediation microorganisms, and discloses a mixed polycyclic aromatic hydrocarbon degrading bacterium G3 suitable for variable environments and application thereof. The bacterial strain is pseudoxanthomonas sp. G3, and is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number is CCTCC M 20251828. The strain G3 is enriched and separated from soil of a certain coking plant in Beijing, can utilize polycyclic aromatic hydrocarbons such as acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene as a single carbon source, and can simultaneously degrade acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene mixtures within 14 days, so that the degradation rate of each component is not lower than 70%; good growth and degradation activity are maintained under the conditions that the temperature is 20-37 DEG C, the salinity is 0-4% NaCl and the pH value is 5.0-9.0, and the degradation rates can reach 100% and 84.15% respectively after the strain is cultured in a single carbon source culture solution with the initial concentration of phenanthrene and pyrene being 50 mg.L <-1 > for 7 days; after the polycyclic aromatic hydrocarbon aging polluted soil is cultured for 28 days, the mixed polycyclic aromatic hydrocarbon in the soil can be effectively removed. According to the invention, the technical bottlenecks of poor environmental adaptability and low mixed pollutant degradation efficiency of the existing degrading bacteria are solved. Therefore, the strain has good application potential in the aspect of bioremediation of the polycyclic aromatic hydrocarbon polluted environment.
Need to check novelty before this filing date? Find Prior Art