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Lead-resistant bacterium and application thereof

A bacillus and lead pollution technology, applied in the field of microorganisms, can solve the problems of high removal cost, secondary pollution, and incomplete treatment.

Active Publication Date: 2022-02-08
INST OF ZOOLOGY GUANGDONG ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The common methods for removing heavy metals now include chemical precipitation, chemical redox, ion exchange, filtration and electrochemical treatment, etc., but the removal cost is high, and the treatment is not thorough or may cause secondary pollution, etc.

Method used

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  • Lead-resistant bacterium and application thereof
  • Lead-resistant bacterium and application thereof

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Embodiment Construction

[0012] The following examples can enable those skilled in the art to understand the present invention more fully, but do not limit the present invention in any way.

[0013] The application provides a lead-resistant bacterium, which belongs to Citrobacter freundii, and was preserved in Guangdong Microbial Culture Collection Center (GDMCC) on September 28, 2021. The preservation address is: Guangzhou City, Guangdong Province 5th Floor, Building 59, Compound, No. 100 Xianlie Middle Road, preservation number: GDMCC No: 61961. The strain shows relatively strong lead tolerance and strong adsorption to lead, and the strain can be used for bioremediation of lead-contaminated water bodies and soils.

[0014] The toxicity in water and soil is reduced by passivating and adsorbing lead pollutants through the lead-resistant bacteria, and has the advantages of low cost, high efficiency, no secondary pollution, and the like.

[0015] The lead-resistant bacterium of the present application ...

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Abstract

The invention discloses a lead-resistant bacterium and application thereof, the lead-resistant bacterium is citrobacter freundii, the lead-resistant bacterium is preserved in Guangdong Microbial Culture Collection Center (GDMCC), and the preservation number is GDMCC No: 61961. The invention further provides application of the lead-resistant bacterium in treatment of lead-polluted water or soil. The high-lead-resistant bacterial strain MPEB0002917 can survive in a high-concentration lead environment and has an extremely strong adsorption effect on lead, the 24-hour removal efficiency can reach up to 93.75% when the concentration is 2000mg / L, and the high-lead-resistant bacterial strain MPEB0002917 can be used for removing lead elements in polluted soil. The high-lead-resistant bacterial strain MPEB0002917 is prepared into a lead adsorbent, and the lead adsorbent can be applied to removal of heavy metal contaminated soil on a large scale.

Description

technical field [0001] The invention relates to the field of microorganisms, more specifically, to lead-resistant bacteria and applications thereof. Background technique [0002] With the gradual development of industrialization, the pollution of heavy metals is becoming more and more serious; most of them are discharged into the soil, causing the content of harmful substances in the soil to be too high, making the soil unable to purify itself, causing vegetation disease, water source deterioration, and Through the food chain, it indirectly causes damage to human health or even death. [0003] Lead is a non-essential element for the human body. Lead pollution in soil mainly comes from the deposition of lead in air pollution, such as the deposition of lead-containing smoke from lead smelters and the deposition of lead-containing waste gas emitted from the combustion of leaded gasoline. In addition, the discharge of "three wastes" from other lead application industries is al...

Claims

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Application Information

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IPC IPC(8): C12N1/20B09C1/10C02F3/34C12R1/01C02F101/20
CPCB09C1/10C02F3/34C02F2101/20Y02W10/10
Inventor 王承民赵佳男季芳曹洪杨徐莉莉
Owner INST OF ZOOLOGY GUANGDONG ACAD OF SCI
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