Application of sinosenecio in repairing of heavy metal cadmium polluted soil

A technology for repairing soil and heavy metals, applied in the field of Compositae, can solve the problems of insufficient plant species resources, etc., and achieve the effect of fast natural reproduction, strong operability, and vigorous vitality

Inactive Publication Date: 2011-09-07
SICHUAN AGRI UNIV +10
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the purpose of the present invention is just to provide the application of puer root in the remediation of heavy metal cadmium contami

Method used

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  • Application of sinosenecio in repairing of heavy metal cadmium polluted soil
  • Application of sinosenecio in repairing of heavy metal cadmium polluted soil
  • Application of sinosenecio in repairing of heavy metal cadmium polluted soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Mine soil remediation test

[0026] The test site is the Baofeng Copper Mine in Yingjing County, western Sichuan. The specific method is: directly sow the puer root collected from the mining area on the soil with cadmium content of 12.74~32.43 mg kg -1 Let it grow naturally on the tailings slag soil. After 75 days, the stubble (12-20cm) was left to harvest the above-ground parts of the plants, and 5 plant samples were randomly selected to measure the cadmium content of 24.83-47.32mg kg -1 .

Embodiment 2

[0027] Example 2 Pot stress test

[0028] The test site is located in the teaching and research farm of Sichuan Agricultural University.

[0029] Using the method of potting to simulate heavy metal pollution in soil, the plant Puergen ( Sinosenecio oldhamianus ) seedlings were transplanted into potting soil polluted with gradient concentrations of heavy metal cadmium. The experiment started on April 20th. The transplanted Puergens were seedlings collected from the Baofeng mining area in Yingjing County, Sichuan Province after sowing seeds. There were 3 plants in each pot and repeated 3 times. The soil weight of each pot was 6 kg, and 0.36 g of pure nitrogen and phosphorus (P 2 o 5 ) 0.28g, Potassium (K 2 O) 0.32 g. A total of 5 treatments were set up in the experiment, namely CK (without adding Cd) and 4 experiments with different dosage concentrations, and the dosage concentration was 5 mg kg -1 (T1), 30 mg kg -1 (T2), 60 mg kg -1 (T3) and 90 mg kg -1 (T4), the ad...

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Abstract

The invention relates to the technical field of phytoremediation on heavy metal pollution in the environment, namely a feverfew is utilized to repair heavy metal cadmium polluted soil, and in particular relates to an application of sinosenecio in repairing of the heavy metal cadmium polluted soil. The technology comprises that the sinosenecio is planted into the heavy metal cadmium polluted soil, the enrichment characteristic of sinosenecio plants to cadmium is utilized to absorb and accumulate heavy metal cadmium, and most cadmium is transferred to overground part of the plants; and finally the overground part of the plants is harvested and is subjected to ashing treatment, and the heavy metal is extracted, thus the aim of repairing the heavy metal cadmium polluted soil is achieved. No special management is required in the growing process of the sinosenecio and a pile can be remained for branching, thus the cost is low and the operability is high; and meanwhile, a new plant resource species is developed for phytoremediation on the heavy metal cadmium polluted soil.

Description

technical field [0001] The invention relates to the technical field of phytoremediation of heavy metal pollution in the environment, that is, using a Compositae plant [0002] To remediate soil heavy metal cadmium pollution, specifically the application of Puergen in remediating soil heavy metal cadmium pollution. Background technique [0003] Cadmium heavy metal pollution in the environment has the characteristics of long-term, concealment and irreversibility. Its pollutants have poor mobility in the medium, long residence time, cannot be degraded by microorganisms, and can be transmitted through the food chain, which will eventually affect environmental quality and endanger human health. . Western Sichuan is a concentrated distribution area of ​​famous lead-zinc mines, copper mines, iron mines and rare earth mines. The tailings and waste water generated during the development of these mines often pollute the soil in the mining area and adjacent farmland due to the high co...

Claims

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Application Information

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IPC IPC(8): B09C1/00
Inventor 张世熔王琼瑶龚国淑陈强李婷徐小逊李云贾永霞蔡艳吴德勇
Owner SICHUAN AGRI UNIV
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