Application of cold plasma seed treatment method in strengthening phytoremediation of cadmium contaminated soil

A cold plasma and seed treatment technology, applied in the restoration of polluted soil, seed and rhizome treatment, application and other directions, can solve the problems of low absorption efficiency of heavy metal Cd, weak accumulation and transfer ability, etc., and increase the enrichment coefficient. , the effect of improving the repair efficiency

Inactive Publication Date: 2019-05-24
INST OF SOIL SCI CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved: the present invention provides a kind of cold plasma seed treatment method in the application of strengthened phytoremediation cadmium contaminated soil, give full play to the advantages of plasma seed treatment with low cost, easy to operate, no pollution, and promote plant growth, aiming at It is an economical, operable and environmentally friendly method to strengthen phytoremediation of heavy metals in soil to solve the problems of low absorption efficiency, weak enrichment and transfer ability of heavy metal Cd by repairing plants

Method used

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  • Application of cold plasma seed treatment method in strengthening phytoremediation of cadmium contaminated soil
  • Application of cold plasma seed treatment method in strengthening phytoremediation of cadmium contaminated soil
  • Application of cold plasma seed treatment method in strengthening phytoremediation of cadmium contaminated soil

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Solanum nigrum seeds were subjected to cold plasma treatment. First, put the seeds in the cold plasma seed treatment machine, and treat the seeds with non-ionizing radiation for 60s under the treatment power of 100, 300, and 500W, and at the same time, treat the seeds with the treatment power of 500w for 300s. ; The processing medium is air, and it is carried out in an environment with a vacuum degree of 2000pa. The treated seeds were tested in pots within one week, and non-plasma-treated seeds served as control treatments. The potting experiment area is located in the greenhouse of the Nanjing Soil Research Institute of the Chinese Academy of Sciences. The soil for the potting experiment was collected from a cadmium-contaminated farmland in Tongling City, Anhui Province. The basic physical and chemical properties of cadmium-contaminated farmland soil are pH 5.21, organic matter content 23.81g / kg, total nitrogen, total phosphorus and total potassium content are 0.89, 0...

Embodiment 2

[0022] The ghost needle grass seeds were subjected to cold plasma treatment. First, put the seeds in the cold plasma seed treatment machine, and treat the seeds with non-ionizing radiation for 60s under the treatment power of 100, 300, and 500W, and at the same time, treat the seeds with the treatment power of 500w for 300s. ; The processing medium is air, and it is carried out in an environment with a vacuum degree of 2000pa. The treated seeds were tested in pots within one week, and non-plasma-treated seeds served as control treatments. The potted experiment area, the test soil and the potted management measures are the same as in Example 1.

[0023]Compared with the control (CK) treatment without cold plasma treatment, although the Cd content in the plants of the plants treated with cold plasma seeds under different treatment conditions was not significantly increased (Table 2), but the suitable cold plasma The bulk treatment power significantly increased the enrichment c...

Embodiment 3

[0028] White clover seeds were subjected to cold plasma treatment. First, put the seeds in the cold plasma seed treatment machine, and treat the seeds with non-ionizing radiation for 60s under the treatment power of 100, 300, and 500W, and at the same time, treat the seeds with the treatment power of 500w for 300s. ; The processing medium is air, and it is carried out in an environment with a vacuum degree of 2000pa. The treated seeds were tested in pots within one week, and non-plasma-treated seeds served as control treatments. The potted experiment area, the test soil and the potted management measures are the same as in Example 1.

[0029] Compared with the control (CK) without cold plasma seed treatment, the white clover treated with 100W for 60s had a significant increase in the Cd content in the aboveground part of the plant, the ability to enrich and transfer Cd in the soil, and thus also significantly The remediation efficiency of white clover to soil Cd was greatly ...

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Abstract

The invention relates to an application of a cold plasma seed treatment method in strengthening the phytoremediation of cadmium contaminated soil, which can improve the Cd content in remedied plantsplants, enhance the Cd enrichment capacity of the remedied plants plants for the soil, and play a role in strengthening the Cd-contaminated repairing efficiency of the plants for the soil. The cold plasma seed treatment can increase the Cd content of the repairing plants of solanum nigrum, bidens bipinnata and trifolium alba on the ground by 18.36-43.42%, 3.76-9.35% and 15.06-57.31% respectively after the solanum nigrum, the bidens bipinnata and the trifolium alba grow in the soil and are harvested in the soil with a Cd concentration of 3.02 mg/kg. The enrichment coefficients of Cd of the plantsin soil are increased by 0.39-5.75%, 0.37-2.41% and 1.06-5.40% respectively. The repair efficiencies of the plants for the soil Cd are increased by 7.95-15.56%, 0.03-7.65% and 0.17-8.75% respectively.

Description

technical field [0001] The invention belongs to the application of a cold plasma seed treatment method, in particular to a cold plasma seed treatment technology to enhance the efficiency of phytoremediation of soil cadmium, and to expand its new application in phytoremediation of heavy metal-contaminated soil. Background technique [0002] Plasma is a high-energy material aggregation state, which contains a large number of active particles such as electrons, ions, excited atoms, molecules, photons and free radicals. Using plasma to treat crop seeds is an emerging physical agricultural engineering technology in recent years, which has the advantages of low cost, simple operation, and no pollution. The principle of plasma treatment of seeds: use the plasma generator to stimulate the generation of plasma energy, change the internal mechanism of the seeds, and at the same time kill the bacteria on the surface of the seeds through the stimulation of plasma energy and the strong o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00A01C1/00
Inventor 赵玲滕应邓敏万京林戴阳
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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