A method for remediating cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum nigrum

A technology of cadmium-contaminated soil and Aspergillus polymosa, which is applied in the field of microorganisms, can solve the problems of slow growth, influence on the repair of heavy metal-contaminated soil, and small biomass, and achieve the effect of promoting dissolution, not causing secondary pollution, and beautifying the environment

Active Publication Date: 2020-02-18
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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  • A method for remediating cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum nigrum
  • A method for remediating cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum nigrum
  • A method for remediating cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum nigrum

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Experimental program
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Effect test

Embodiment

[0047] The specific implementation steps are as follows:

[0048](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;

[0049] (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;

[0050] (3) Sowing Solanum nigrum seeds by direct seeding in the inoculation group and the control group respectively, sow 8 seeds in every pot, 1 week after seed germination, carry out thinning, keep 5 strains of well-growing seedlings in every pot;

[0051] (4) The potted plants in the inoculation group need to spray 5...

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Abstract

The invention relates to a method for repairing cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum nigrum, and belongs to the technical field of microorganisms. Aspergillus sydowii of the present invention has been preserved in the General Microbiology Center of China Microbial Cultures Preservation Management Committee on February 05, 2018. The address is No. 3, No. 1, Beichen West Road, Chaoyang District, Beijing, and the preservation number is CGMCC No. 15385. The invention provides a method for repairing cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum solanum. The method for repairing heavy metal cadmium-contaminated soil has the advantages of being economical and efficient, not causing secondary pollution, and beautifying the landscape.

Description

technical field [0001] The invention relates to a method for repairing cadmium-contaminated soil by using Aspergillus polydotium in combination with Solanum nigrum, 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 Patents(China)
IPC IPC(8): C12N1/14B09C1/10B09C1/00C12R1/66
CPCB09C1/105B09C2101/00C12N1/145C12R2001/66
Inventor 滕跃王涛邹路易郁红艳顾文秀王小芳张海利董梦雪
Owner JIANGNAN UNIV
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