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Application for repairing lead-polluted soil by chemical-enhanced flower plants

A lead-contaminated soil and phytoremediation technology is applied in the application field of winter eggplant in the remediation of lead-contaminated soil, which can solve problems such as lack of soil remediation research, and achieve the effects of reducing soil erosion and improving remediation efficiency.

Inactive Publication Date: 2016-03-02
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, organic phosphonic acid is only used in water treatment and other industries, and there is a lack of related research on soil remediation.

Method used

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  • Application for repairing lead-polluted soil by chemical-enhanced flower plants
  • Application for repairing lead-polluted soil by chemical-enhanced flower plants

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The concentration of Pb in the experimental soil is 1000mgkg -1 , which is twice the national soil environmental quality level 3 standard, and the added heavy metal form is Pb(NO 3 ) 2 , as an analytically pure reagent, it is added to the soil in a solid state, mixed thoroughly, and set aside for use after one month of equilibration.

[0019] The potted flower is petunia, and after the seedling grows 5-6 leaves, it is transplanted into the above-mentioned treated soil. 3 plants per pot, repeated 3 times. Water according to the soil water shortage situation, so that the soil moisture content is kept at about 70% of the field water capacity.

[0020] After the plants matured, phosphonobutane tricarboxylic acid was applied to the soil one week before harvest, and the molar concentration ratio of Pb in the soil was 1:4 (P1), 1:2 (P2), 1:1 (P3) , 2:1 (P4), set no chelating agent control (P0).

[0021] Divide the harvested plant samples into roots and shoots, fully rinse...

Embodiment 2

[0029] The concentration of Pb in the experimental soil is 3000mgkg -1 , which is 6 times of the national soil environmental quality level 3 standard, and the added heavy metal form is Pb(NO 3 ) 2 , as an analytically pure reagent, it is added to the soil in a solid state, mixed thoroughly, and set aside for use after one month of equilibration.

[0030] The potted flower is petunia, and after the seedling grows 5-6 leaves, it is transplanted into the above-mentioned treated soil. 3 plants per pot, repeated 3 times. Water according to the soil water shortage situation, so that the soil moisture content is kept at about 70% of the field water capacity.

[0031] After the plants matured, phosphonobutane tricarboxylic acid was applied to the soil one week before harvest, and the molar concentration ratio of Pb in the soil was 1:4 (P1), 1:2 (P2), 1:1 (P3) , 2:1 (P4), set no chelating agent control (P0).

[0032] Divide the harvested plant samples into roots and shoots, fully ...

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Abstract

The invention relates to application for repairing lead-polluted soil by chemical-enhanced flower plants, in particular to application for repairing heavy metal lead-polluted soil by using dibenzyloxyphosphoiyl butane tricarboxylic acid-enhanced and enriched plant petunia hybrida. The petunia hybrida is planted on the soil containing pollutant lead; when the plant grows to the mature period, dibenzyloxyphosphoiyl butane tricarboxylic acid is applied to the soil for activating the lead in the soil; most lead in the polluted soil is absorbed through the root system of the petunia hybrida, and is transferred to an organ above the ground; and the organ of the plant above the ground is shifted away from the polluted soil to realize the purpose of removing the pollutant lead from the soil. The dibenzyloxyphosphoiyl butane tricarboxylic acid-enhanced and enriched plant petunia hybrida is used for treating the lead-polluted soil; and such advantages as strong operability and prevention of wind erosion and water erosion of the polluted soil are achieved.

Description

technical field [0001] The invention relates to the phytoremediation technology of lead-contaminated soil, and strictly speaking, it refers to the application of phosphonobutane tricarboxylic acid to strengthen and enrich plant petunia in remediating lead-contaminated soil. Background technique [0002] Lead is one of the main heavy metal pollutants in the environment. Soil lead pollution is widespread in my country and around the world, especially around mines, smelters and roads, where lead pollution is more serious. Once lead enters the human body, it will interfere with the normal work of nerve cells through the blood, destroy the survival of hemoglobin in the blood and the permeability of brain microvessels, which can lead to retarded and unsound brain development, and ultimately affect people's intelligence. Therefore, lead pollution Soil management and restoration is a very urgent task. [0003] Contaminated soil phytoremediation technology is cheap, does not damage ...

Claims

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Application Information

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IPC IPC(8): B09C1/10
CPCB09C1/105B09C2101/00
Inventor 崔爽赵杉林李萍刘艺芸
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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