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Reinforced restoration method for lead-polluted soil by combining diethyl aminoethyl hexanoate and ethylenediamine tetraacetic acid (EDTA)

A technology for ethylenediaminetetraacetic acid and lead-contaminated soil is applied in the direction of restoration of polluted soil, etc., to achieve the effects of increasing biomass, improving restoration effect, and improving biological effectiveness

Inactive Publication Date: 2014-02-19
ZHEJIANG GONGSHANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But up to now, there is no report on the enhanced phytoremediation of lead-contaminated soil with DA-6 alone or in combination with ethylenediaminetetraacetic acid (ETDA).

Method used

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  • Reinforced restoration method for lead-polluted soil by combining diethyl aminoethyl hexanoate and ethylenediamine tetraacetic acid (EDTA)
  • Reinforced restoration method for lead-polluted soil by combining diethyl aminoethyl hexanoate and ethylenediamine tetraacetic acid (EDTA)
  • Reinforced restoration method for lead-polluted soil by combining diethyl aminoethyl hexanoate and ethylenediamine tetraacetic acid (EDTA)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The experimental site was set in the greenhouse of the School of Environment, Zhejiang Gongshang University. The soil for potting experiments was collected from a farmland in the outskirts of Hangzhou, and the soil type was clay. The concentration of lead in all treatments is 750mg / kg (the concentration is the concentration of lead in the soil when planting ryegrass), and the test soil is sieved with a 5mm sieve, and the pots are packed, and each pot is 18.5cm (diameter) × 21cm (high) with 2kg of soil ( dry weight), place a tray under the basin.

[0038] Pb as Pb(NO 3 ) 2 Add the soil in the form of an aqueous solution, mix well, add water to 75% of the field water holding capacity, and use it for the test after being stable in the greenhouse for 30 days. 250 ryegrass plants are planted in each pot.

[0039] In this embodiment, 8 treatments were set up, respectively: no addition of EDTA and DA-6 (C), addition of 2.5mM EDTA (T1), leaf spraying of 1 μM DA-6 (T2), leaf s...

Embodiment 2

[0054] The experimental site was set in the greenhouse of the School of Environment, Zhejiang Gongshang University. The soil for potting experiments was collected from a farmland in the outskirts of Hangzhou, and the soil type was clay. The lead concentration in all treatments was 250 mg / kg (this concentration is the lead concentration in the soil where ryegrass was grown).

[0055] Put the test soil into pots after passing through a 5mm sieve. Each pot is 18.5cm (diameter) × 21cm (height) and filled with 2kg (dry weight) of soil, and a tray is placed under the pot. Pb as Pb(NO 3 ) 2 Add the soil in the form of an aqueous solution, mix well, add water to 75% of the field water holding capacity, and use it for the test after being stable in the greenhouse for 30 days. 250 ryegrass plants are planted in each pot.

[0056] A total of 8 treatments were set up in the experiment, namely: no addition of EDTA and DA-6 (C), addition of 2.5 mM EDTA (T1), leaf spraying of 1 μM DA-6 (T2...

Embodiment 3

[0071]The experimental site was set in the greenhouse of the School of Environment, Zhejiang Gongshang University. The soil for potting experiments was collected from a farmland in the outskirts of Hangzhou, and the soil type was clay. The lead concentration in all treatments was 500 mg / kg (this concentration is the lead concentration in the soil where ryegrass was grown).

[0072] Put the test soil into pots after passing through a 5mm sieve. Each pot is 18.5cm (diameter) × 21cm (height) and filled with 2kg (dry weight) of soil, and a tray is placed under the pot. Pb as Pb(NO 3 ) 2 Add the soil in the form of an aqueous solution, mix well, add water to 75% of the field water holding capacity, and use it for the test after being stable in the greenhouse for 30 days. 250 ryegrass plants are planted in each pot.

[0073] A total of 8 treatments were set up in the experiment, namely: no addition of EDTA and DA-6 (C), addition of 2.5 mM EDTA (T1), leaf spraying of 1 μM DA-6 (T2)...

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Abstract

The invention discloses a reinforced restoration method for lead-polluted soil by combining diethyl aminoethyl hexanoate and ethylenediamine tetraacetic acid (EDTA), which comprises the following steps: planting ryegrass on the lead-polluted soil, and adding a diethyl aminoethyl hexanoate solution and an EDTA solution in the ryegrass growth process. When the method is used for treating the lead-polluted soil, the added EDTA is beneficial to enhancing the biological effectiveness of lead in soil, and promoting the lead extraction and enrichment of the plants; and meanwhile, the diethyl aminoethyl hexanoate is added to enhance the biomass of the plants, thereby obviously enhancing the restoration effect of the plants on the lead-polluted soil.

Description

technical field [0001] The invention relates to the technology of strengthening the restoration of heavy metal lead-contaminated soil, in particular to a method for strengthening the restoration of lead (Pb)-contaminated soil by using acetaminophen (DA-6) and ethylenediaminetetraacetic acid (ETDA). Background technique [0002] Phytoremediation technology has the advantages of simple operation, economy, environmental friendliness and easy acceptance by people, and has become a research hotspot in the field of soil heavy metal pollution remediation. [0003] For example, the Chinese invention patent application with publication number CN103302087A discloses a method for remediating lead and zinc polluted soil by using the enrichment plant ryegrass combined with pig manure. Mix pig manure in the soil containing pollutants lead and zinc, and then plant ryegrass. Under the condition of application concentration of 20-80g / kg, fully mix the pig manure with the surface polluted soi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B09C1/10
Inventor 何闪英吴秋玲张熹张华王雷
Owner ZHEJIANG GONGSHANG UNIVERSITY
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