A Burkholderia gyp1 and its application in degrading brominated flame retardants

A Burkholderia, brominated flame retardant technology, applied to Burkholderia GYP1 and its application in the degradation of brominated flame retardants

Active Publication Date: 2020-02-18
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the existing problems of degrading brominated flame retardants 2,2',4,4'-tetrabromodiphenyl ether, the primary purpose of the present invention is to provide a Burkholderia GYP1

Method used

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  • A Burkholderia gyp1 and its application in degrading brominated flame retardants
  • A Burkholderia gyp1 and its application in degrading brominated flame retardants
  • A Burkholderia gyp1 and its application in degrading brominated flame retardants

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Embodiment

[0026] Separation and degradation of Burkholderia cepacia GYP1 Application of 2,2′,4,4′-tetrabromodiphenyl ether:

[0027] On-site collection of farmland soil around an electronic dismantling plant heavily polluted by polybrominated diphenyl ethers in Guiyu Town, Shantou City, Guangdong Province, using 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47) as the only carbon source The pure inorganic salt system domesticated the degrading bacteria, and gradually increased the concentration of BDE-47 in the system according to the gradient, so that the final concentration of BDE-47 was 5mg / L. Inorganic salt medium (MSM) composition: 90mg Na 2 HPO 4 , 10mg KH 2 PO 4 , 40mg NaCl, 30mg (NH 4 ) 2 SO 4 , 40mg MgSO 4 ·7H 2 O, 0.1mgCuSO 4 ·5H 2 O, 0.1mg MnSO 4 ·H 2 O, 0.1mg FeSO 4 ·7H 2 O, 0.1 mg CaCl 2 2H 2 O, distilled water 1L, pH value is 6.8-7.0. After 6 generations of transfer and repeated domestication, the enriched culture solution was spread on the surface of the solid ...

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Abstract

The invention belongs to the technical field of biological treatment of environmental pollutants, and discloses Burkholderia GYP1 and its application in degrading brominated flame retardants. The Burkholderia cepacia GYP1 was deposited in the China Center for Type Culture Collection (CCTCC) on March 9, 2017, and the preservation number is CCTCC NO: M 2017103. The strain Burkholderia cepacia GYP1 of the present invention degrades 2,2′,4,4′-tetrabromodiphenyl ether with an initial concentration of 1 mg / L at a pH of 4.0 to 7.0, a temperature of 30°C, and 150 r / min shaking culture for 4 days The rate can reach more than 80%. The bacteria can be used for bioremediation of water and soil polluted by polybrominated diphenyl ethers.

Description

technical field [0001] The invention belongs to the technical field of biological treatment of environmental pollutants, and in particular relates to Burkholderia GYP1 and its application in degrading brominated flame retardants. Background technique [0002] As a brominated flame retardant with superior performance, polybrominated diphenyl ethers (PBDEs) have been widely used in commercial products such as electronic and electrical equipment, automatic control equipment, building materials, and textiles, and are global organic pollutants that widely exist in the environment. . It has the characteristics of stable structure, difficult to degrade, environmental persistence, mobility, low water solubility, not easy to degrade, bioaccumulation, etc., and it is difficult to remove through conventional physical and chemical methods. [0003] Among the 209 PBDE congeners, 2,2′,4,4′-tetrabromodiphenyl ether has the highest toxicity and the content of 2,2′,4,4′-tetrabromodiphenyl e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/20C02F3/34B09C1/10C12R1/01C02F101/36
CPCB09C1/10C02F3/34C02F2101/36C12N1/205C12R2001/01
Inventor 卢桂宁黄婷连文洁党志尹华杨琛易筱筠郭楚玲
Owner SOUTH CHINA UNIV OF TECH
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