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Method for restoring cadmium pollution soil by combining aspergillous sydowii with brassica juncea

A technology of cadmium-contaminated soil and Aspergillus polymosa, which is applied in the field of microorganisms, can solve the problems of slow growth, affecting the repair of heavy metal-contaminated soil, and small biomass, so as to beautify the environment, not cause secondary pollution, and improve the extraction effect.

Active Publication Date: 2018-07-10
JIANGNAN UNIV
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Problems solved by technology

[0007] However, the currently discovered plants that can be used for soil bioremediation are limited by geographical and climatic conditions, and usually have small biomass and slow growth, which greatly affects their potential to remediate heavy metal-contaminated soil.

Method used

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  • Method for restoring cadmium pollution soil by combining aspergillous sydowii with brassica juncea
  • Method for restoring cadmium pollution soil by combining aspergillous sydowii with brassica juncea
  • Method for restoring cadmium pollution soil by combining aspergillous sydowii with brassica juncea

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Experimental program
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Embodiment

[0045] The specific implementation steps are as follows:

[0046] (1) Add 0, 0.0856, 0.1713, 0.3425g of CdCl to the soil respectively 2 For solid powder, add water and stir until the soil metal Cd concentration is 0, 28, 56, and 112 mg / kg respectively. Set up 3 potted plants for each concentration, and finally take the average value to simulate Cd-contaminated soil;

[0047] (2) After the soil was stabilized, it was sterilized at 121°C for 20 minutes, and after cooling, it was filled into pots. Each pot was filled with 1.5 kg of Cd-contaminated soil, and 6 pots were set for each concentration as the inoculation group and the control group, a total of 24 pots;

[0048] (3) In the inoculation group and the control group, adopt direct seeding mode to sow Indian mustard seeds respectively, 8 seeds are sown in every pot, and 1 week after the seeds germinate, carry out thinning, and keep 5 well-growing seedlings in every pot;

[0049] (4) The potted plants in the inoculation group ne...

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Abstract

The invention relates to a method for restoring cadmium pollution soil by combining aspergillous sydowii with brassica juncea, and belongs to the technical field of microorganisms. The aspergillous sydowii is preserved in CGMCC (China Center of Industrial Culture Collection) on February 5, 2018; the address is No. 3, No. 1 yard, Beichen West Road, Chaoyang District, Beijing. The preservation number is CGMCC No.15385. The invention provides the method for restoring cadmium pollution soil by combining aspergillous sydowii with brassica juncea. By using the method for restoring the heavy metal cadmium pollution soil, the advantages of high economic efficiency, no secondary pollution, landscape beautification the like can be realized.

Description

technical field [0001] The invention relates to a method for repairing cadmium-contaminated soil by using Aspergillus polypolyps in combination with Indian mustard, and belongs to the technical field of microorganisms. Background technique [0002] In modern times, with the rapid development of industry and agriculture, heavy metals have been used more and more widely, and the accompanying pollution problems have become more prominent. As the largest storage place for heavy metal pollutants, soil heavy metal pollution has become one of the global environmental problems. Therefore, soil heavy metal pollution, especially farmland soil heavy metal pollution, urgently needs to be prevented and restored. [0003] The sources of cadmium in the soil are mainly the mining and smelting of lead-cadmium ore, and the discharge of industrial "three wastes" in the electroplating industry. At present, the area of ​​China's cultivated land polluted by heavy metals such as cadmium and cadm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/14B09C1/10C12R1/66
CPCB09C1/105B09C2101/00C12N1/145C12R2001/66
Inventor 邹路易王涛滕跃郁红艳顾文秀包继焜董孟雪王小芳张海利
Owner JIANGNAN UNIV
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