Plant source liquid reinforcer for repairing selenium-contaminated soil and application thereof

A technology of enhancer and plant source, applied in the field of soil remediation, can solve the problems of secondary pollution and high toxicity of the soil environment, and achieve the effect of enhancing the effect of adsorption and enrichment

Pending Publication Date: 2021-09-07
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these chelating agents often cause secondary pollution to the soil environment due to their high toxicity.

Method used

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  • Plant source liquid reinforcer for repairing selenium-contaminated soil and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A plant-source liquid fortifier for repairing selenium-polluted soil, the fortifier is obtained by mixing the extract of orina sativa, extract of alfalfa and water according to the mass ratio of 0.05:1:100;

[0026] Wherein, the extract of the broken rice chestnut is prepared by the following method:

[0027] (21) Air-dry the root of the broken rice chestnut until the water content is 5%, and crush it to obtain the broken rice chestnut powder;

[0028] (22) According to the ratio of material to liquid: 0.05g: 100 mL, mix the crushed rice chestnut powder with ultrapure water, stir and extract at 45°C for 80h, and after ultrasonic treatment at 60°C for 12h, stir and extract for 60h, cool and filter , get filter residue;

[0029] (23) drying the obtained filter residue at 75° C. for 24 hours to obtain the extract of broken orchardrum;

[0030] The alfalfa extract is prepared by the following method:

[0031] (31) Air-dry the alfalfa root until the moisture content is 5%...

Embodiment 2

[0035] A plant-source liquid fortifier for repairing selenium-polluted soil, said fortifier is obtained by mixing the extract of orina sativa, extract of alfalfa and water according to the mass ratio of 5:30:3000;

[0036] Wherein, the extract of the broken rice chestnut is prepared by the following method:

[0037] (21) Air-dry the root of the broken rice chestnut until the water content is 10%, and crush it to obtain the broken rice chestnut powder;

[0038] (22) According to the ratio of solid to liquid: 0.2g: 100 mL, mix the crushed rice chestnut powder with ultrapure water, stir and extract at 60°C for 50h, and after ultrasonic treatment at 80°C for 8h, stir and extract for 300h, cool and filter , get filter residue;

[0039] (23) drying the obtained filter residue at 75° C. for 24 hours to obtain the extract of broken orchardrum;

[0040] The alfalfa extract is prepared by the following method:

[0041] (31) Air-dry the alfalfa root until the water content is 15%, and...

Embodiment 3

[0045] A plant-source liquid fortifier for repairing selenium-polluted soil, the fortifier is obtained by mixing the extract of orina sativa, extract of alfalfa and water according to the mass ratio of 3:20:1000;

[0046] Wherein, the extract of the broken rice chestnut is prepared by the following method:

[0047] (21) Air-dry the root of the broken rice chestnut until the moisture content is 8%, and crush it to obtain the broken rice chestnut powder;

[0048] (22) According to the ratio of solid to liquid: 0.1g: 100 mL, mix the crushed rice chestnut powder with ultrapure water, stir and extract at 50°C for 60h, and after ultrasonic treatment at 65°C for 10h, stir and extract for 100h, cool and filter , get filter residue;

[0049] (23) drying the obtained filter residue at 75° C. for 24 hours to obtain the extract of broken orchardrum;

[0050] The alfalfa extract is prepared by the following method:

[0051] (31) Air-dry the alfalfa root until the water content is 10%, a...

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Abstract

The invention discloses a plant source liquid reinforcer for repairing selenium-contaminated soil. The reinforcer is obtained by mixing cardamine hirsute extract, alfalfa extract and water according to the mass ratio of (0.05-5): (1-30): (100-3000). Meanwhile, the invention also discloses an application of the reinforcer in repairing the selenium-contaminated soil, and the application is that the reinforcer is sprayed on the soil where the hyperaccumulators are planted in the flowering period of the hyperaccumulators. The plant source liquid reinforcer for repairing the selenium-contaminated soil is extracted from plants, is environmentally friendly and safe, does not cause secondary pollution to the soil, and can enhance the adsorption and enrichment effects of hyperaccumulators on selenium in the soil when being sprayed on the soil in the flowering period of the hyperaccumulators.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a plant-derived liquid enhancer for remediating selenium-contaminated soil and an application thereof. Background technique [0002] Environmental selenium pollution can be divided into anthropogenic and natural sources. Natural sources include weathering of selenium-containing rocks, soil leaching, and volcanic eruptions. Anthropogenic actions include coal burning, minerals, agriculture, oil refining, pesticide production, glass manufacturing. Selenium is an essential trace element for the life activities of animals and plants, but in living organisms, the suitable concentration range of selenium is very narrow, and both deficiency and excess of selenium can cause diseases of living organisms. In recent years, the harm of selenium pollution has been common around the world, while the domestic research and development of selenium-enriched products are in fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/14B09C1/00
CPCC09K17/14B09C1/00B09C2101/00
Inventor 代惠萍魏树和贾继宝
Owner SHAANXI SCI TECH UNIV
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