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Application of eupatorium adenophorum spreng to repairing heavy metal zinc, lead and copper contaminated mining area soil

A technology of E. japonica and heavy metals is applied in the field of remediation of heavy metal pollution in the environment of mining areas, which can solve problems such as insufficient plant variety resources, and achieve the effects of reducing the spread of heavy metal pollution, high remediation potential and low cost.

Inactive Publication Date: 2012-11-21
SICHUAN AGRI UNIV
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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 to address the above-mentioned shortage of plant species resources that can be used for bioremediation of heavy metal pollution in the western Sichuan mining area, and to provide a new plant variety Eupatorium adenophorum in the application of remediation of heavy metal zinc, lead and copper contaminated soil in the mining area

Method used

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  • Application of eupatorium adenophorum spreng to repairing heavy metal zinc, lead and copper contaminated mining area soil
  • Application of eupatorium adenophorum spreng to repairing heavy metal zinc, lead and copper contaminated mining area soil
  • Application of eupatorium adenophorum spreng to repairing heavy metal zinc, lead and copper contaminated mining area soil

Examples

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Effect test

Embodiment 1

[0017] Example 1 Soil remediation test in mining area

[0018] The test site is the Fuquan joint lead-zinc mining area in Hanyuan County, Ya'an City, Sichuan Province. The specific method is: the cuttings of Eupatorium adenophorum of Compositae genus Eupatorium adenophorum collected from the mining area were planted in the soil of the mining area, and the average contents of heavy metals zinc, lead and copper were 267.22 mg·kg -1 , 1648.24 mg·kg -1 and 66.81 mg·kg -1 On the tailings slag soil, plant 20 rows in total, 20 plants in each row, and the spacing between the rows is 40cm. Fertilize once in the 8-leaf stage and the tillering stage respectively. The fertilizers used are urea, superphosphate and potassium chloride. Apply pure nitrogen 100kg / hm 2 , pure phosphorus 40 kg / hm 2 and pure potassium 40kg / hm 2 , and irrigated twice a month. After 90 days, the aboveground part (50-70cm) of the plant was harvested with stubble, and 10 plant samples were randomly selected fo...

Embodiment 2

[0019] Example 2 Pot stress test

[0020] The test site is located in the greenhouse of the Soil and Fertilizer Experiment Station of the Teaching and Research Farm of Sichuan Agricultural University.

[0021]In this experiment, potted plants were used to simulate single heavy metal pollution in the soil. Cutting propagation began in spring from Eupatoria adenophorum collected from Fuquan United Lead-Zinc Mining Area, Hanyuan County, Ya'an City, Sichuan Province. The cutting seedlings of Eupatorium adenophorum were planted in potting soil polluted with gradient concentrations of heavy metals zinc, lead and copper, 3 plants per bucket, and each gradient was repeated 3 times, and cultivated in a net room. Fertilize once respectively at the 8-leaf stage and the tillering stage. The fertilizers used are urea, superphosphate and potassium chloride. The two fertilizations ensure that 1g / pot of pure nitrogen, 0.4g / pot of pure phosphorus and 0.4g of pure potassium are applied in tot...

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Abstract

The invention relates to an application of eupatorium adenophorum spreng to repairing heavy metal zinc, lead and copper contaminated mining area soil, which comprises the following steps of: planting the eupatorium adenophorum spreng in the heavy metal zinc, lead and copper contaminated mining area soil in which the eupatorium adenophorum spreng is widely distributed, absorbing and accumulating heavy metals by utilizing plants of the eupatorium adenophorum spreng according to the enrichment characteristics of heavy metal zinc, lead and copper and transporting a majority of heavy metals to the parts of the plants on the ground; and harvesting the parts of the plants on the ground before seeds of the eupatorium adenophorum spreng are mature to prevent the seeds of the eupatorium adenophorum spreng from being blown in the wind and spread to the outside of a mine, ashing the parts of the plants on the ground and extracting the heavy metals to achieve the purpose of repairing the heavy metal zinc, lead and copper contaminated mining area soil. As the eupatorium adenophorum spreng has exuberant vitality and large biomass and can reduce the concentration of the heavy metal zinc, lead and copper in the rhizosphere soil of the eupatorium adenophorum spreng through a mechanism of the eupatorium adenophorum spreng to protect the eupatorium adenophorum spreng against heavy metal damage and normally grow, when the eupatorium adenophorum spreng is applied to the repairing of the heavy metal zinc, lead and copper contaminated mining area soil, the cost is low, and the repairing potential is large.

Description

[0001] technical field [0002] The invention relates to the technical field of remediation of heavy metal pollution in the environment of mining areas, that is, using Eupatoria adenophorum to restore soil polluted by heavy metals, specifically Eupatorium adenophorum in repairing heavy metals zinc and lead in mining areas where the plant has been widely distributed. Application of copper in contaminated soil. Background technique [0003] With the rapid development of economic globalization, environmental pollution and ecological damage are becoming more and more serious, seriously affecting and threatening human health and survival, among which heavy metal elements are particularly serious in environmental pollution and damage. The development and utilization of mineral resources by humans is one of the main sources of soil heavy metal pollutants. The discharge of washing waste liquid and the heavy metals contained in the tailings during the mining process have caused seri...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
Inventor 张世熔赵小英周玲徐小逊蒲玉琳贾永霞李婷李云龚国淑
Owner SICHUAN AGRI UNIV
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