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Application of nicandra physalodes in repairing mine soil and sludge polluted by heavy metal cadmium

A technology of pseudophysalis and cadmium pollution, applied in the field of phytoremediation, can solve the problems of insufficient plant variety resources, achieve the effects of rapid natural reproduction and growth, repair of polluted soil, and strong diffusion ability

Inactive Publication Date: 2010-03-17
SICHUAN AGRI UNIV +5
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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 exactly to the above-mentioned problem that can be used for the insufficient plant variety resource of soil heavy metal pollution bioremediation, provides the application of a kind of new plant variety pseudophysalis in the heavy metal cadmium pollution of repairing mine soil and sludge

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The application of the pseudo-physalis in this embodiment to repair the heavy metal cadmium pollution of mine soil, the specific method is:

[0019] Solanaceae Nicandra physaloides (L.) Gaertn. was planted in the soil polluted by heavy metals in the Fuquan lead-zinc mining area of ​​Hanyuan County, Sichuan Province by direct seeding under natural conditions; according to the plant growth conditions Irregular watering, no special management.

[0020] After 3 months, carry out stubble and harvest the aerial part of the plant, and measure the weight percentage of heavy metal Cd wherein: 109.7mg kg -1 . The stubble part continues to grow and harvest, and such continuous extraction can effectively repair the heavy metal cadmium pollution in the soil.

Embodiment 2

[0022] The application of the pseudo-physalis in this embodiment to repair the heavy metal cadmium pollution of mine soil, the specific method is:

[0023] Using direct transplanting method, under natural conditions, the Solanaceae plant Nicandra physaloides (L.) Gaertn. The growth of the plants is not watered regularly, and no special management is carried out.

[0024] After 85 days, carry out stubble to harvest the aerial part of the plant, and record the weight percentage of heavy metal Cd wherein: 121.5mgkg -1 . The stubble part continues to grow and harvest, and such continuous extraction can effectively repair the heavy metal cadmium pollution in the soil.

[0025] Visible by above-mentioned embodiment 1 and 2, the present invention can obviously absorb the heavy metal cadmium in polluted soil by planting pseudophysalis in the soil polluted by heavy metal cadmium, because its biomass is bigger, the cumulative amount of cadmium in the plant body is also relatively Hig...

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Abstract

The invention discloses application of nicandra physalodes in repairing mine soil and sludge polluted by heavy metal cadmium, wherein the nicandra physalodes only needs to be planted in the mine soilor the sludge polluted by heavy metal cadmium. By using the characteristic that the nicandra physalodes enriches the heavy metal cadmium, the nicandra physalodes is planted in the mine soil or the sludge to be capable of absorbing the accumulated heavy metal cadmium and transmitting the most of the heavy metal cadmium to overground part to achieve the aim of repairing the mine soil and the sludgewhich are polluted by the heavy metal cadmium. The nicandra physalodes does not need special management in the process of growing, therefore, the invention has the characteristics of lower cost, strong operability, not breaking thephysicochemical property of the soil, and not causing secondary pollution; and the nicandra physalodes has large plant biomass, fast reproductive rate and beautiful shape, can improve the repairing efficiency and beautify the environment, and provides a new plant resource variety for repairing the soil polluted by the heavy metal cadmium.

Description

technical field [0001] The invention relates to the technical field of phytoremediation of heavy metal pollution in the environment, in particular to the application of plant pseudophysalis in repairing heavy metal cadmium pollution in mine soil and sludge. Background technique [0002] There are usually two ways for heavy metals to pollute soil: one is the environmental pollution caused by metal mining activities. Serious soil; heavy metal polluted soil caused by leaching and other reasons during the mining waste rock stacking process; soil pollution caused by mine wastewater containing high concentrations of heavy metals, etc. The second is heavy metal polluted soil caused by industrial sewage irrigation of farmland. [0003] Heavy metal pollution in the environment has the characteristics of concealment, long-term and irreversibility. The pollutants have poor mobility in the medium, long residence time, cannot be degraded by microorganisms, and can be transmitted through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00C02F11/02
Inventor 张世熔季晓菲李婷徐小逊李云
Owner SICHUAN AGRI UNIV
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