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Repair agent for heavy-metal cadmium-polluted cultivated land soil as well as preparation method and application thereof

A technology for cultivating soil and cadmium pollution, which is applied in the field of remediation agent for heavy metal cadmium polluted cultivated land soil and its preparation, which can solve the problems of reducing cadmium content, achieve the effects of simple preparation method, increase rice production, and reduce cadmium content in brown rice

Inactive Publication Date: 2018-05-22
张松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are many remediation agents for heavy metal-contaminated soil, but there are few remediation agents for heavy metal cadmium-contaminated cultivated land soil, and the cadmium content in plants planted in cultivated soil still needs to be further reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A repairing agent for heavy metal cadmium polluted farmland soil, comprising the following raw materials in parts by weight: 15 parts of propylene isothiocyanate, 18 parts of cardanol, 5 parts of neem oil, 10 parts of matsutake extract, 6 parts of coffee beans, poplar 8 parts of powder, 3 parts of zinc acetate, 10 parts of corn bran powder.

[0018] A method for preparing a repairing agent for heavy metal cadmium-contaminated cultivated land, comprising the following steps: (1) mixing allyl isothiocyanate, neem oil and matsutake extract, and ultrasonically vibrating for 10 minutes; Add zinc acetate and cardanol, and continue to use ultrasonic vibration for 10 minutes; (3) Add coffee beans, poplar wood powder and corn hull powder to the result of the previous step, stir and mix for 20 minutes, the stirring temperature is 65 ° C; the stirring speed is 300r / min, Instantly. The restoration agent can be used to reduce the content of metal cadmium in plants.

Embodiment 2

[0020] A remediation agent for heavy metal cadmium polluted farmland soil, comprising the following raw materials in parts by weight: 35 parts of propylene isothiocyanate, 26 parts of cardanol, 17 parts of neem oil, 25 parts of matsutake extract, 17 parts of coffee beans, poplar 17 parts of powder, 8 parts of zinc acetate, 15 parts of corn bran powder.

[0021] A method for preparing a remediation agent for heavy metal cadmium-contaminated farmland soil, comprising the following steps: (1) mixing allyl isothiocyanate, neem oil and matsutake extract, and ultrasonically vibrating for 30 minutes; Add zinc acetate and cardanol, and continue to use ultrasonic vibration for 25 minutes; (3) Add coffee beans, poplar wood powder and corn hull powder to the result of the previous step, stir and mix for 35 minutes, the stirring temperature is 80 °C; the stirring speed is 500r / min, Instantly. The restoration agent can be used to reduce the content of metal cadmium in plants.

Embodiment 3

[0023] A remediation agent for heavy metal cadmium polluted farmland soil, comprising the following raw materials in parts by weight: 28 parts of propylene isothiocyanate, 22 parts of cardanol, 10 parts of neem oil, 18 parts of matsutake extract, 11 parts of coffee beans, poplar 12 parts of powder, 6 parts of zinc acetate, 12 parts of corn bran powder.

[0024] A method for preparing a remediation agent for heavy metal cadmium-contaminated cultivated land soil, comprising the following steps: (1) mixing allyl isothiocyanate, neem oil and matsutake extract, and ultrasonically vibrating for 20 minutes; Add zinc acetate and cardanol, and continue to use ultrasonic vibration for 15 minutes; (3) Add coffee beans, poplar wood powder and corn hull powder to the result of the previous step, stir and mix for 30 minutes, the stirring temperature is 70 ° C; the stirring speed is 400r / min, Instantly. The restoration agent can be used to reduce the content of metal cadmium in plants.

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PUM

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Abstract

The invention discloses a repair agent for heavy-metal cadmium-polluted cultivated land soil. The repair agent is prepared from the following raw materials in parts by weight: 15 to 35 parts of allylisothiocyanate, 18 to 26 parts of anacardol, 5 to 17 parts of neem oil, 10 to 25 parts of a tricholoma matsutake extracting solution, 6 to 17 parts of coffee beans, 8 to 17 parts of poplar wood powder, 3 to 8 parts of zinc acetate and 10 to 15 parts of corn bran powder. The repair agent for the heavy-metal cadmium-polluted cultivated land soil can effectively reduce the cadmium content of brown rice and can better promote yield increase of rice. The preparation method is simple, favorable for industrial production and relatively high in popularization value.

Description

technical field [0001] The invention relates to a soil remediation agent, in particular to a remediation agent for cultivated land soil polluted by heavy metal cadmium, a preparation method and application thereof. Background technique [0002] Cadmium is a non-essential element for the human body. It often exists in the form of compounds in nature, and its content is generally very low. Under normal environmental conditions, it will not affect human health. Cadmium and zinc are congener elements, and cadmium often coexists with zinc and lead in nature. When the environment is polluted by cadmium, cadmium can be enriched in organisms and enter the human body through the food chain to cause chronic poisoning. [0003] The cadmium content per kilogram of soil is 0.01-2 mg, with an average of 0.35 mg per kg. The concentration of cadmium in the soil near the aluminum smelter and the downwind area is very high, resulting in land waste. The accumulation of cadmium-containing wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/14B09C1/00B09C1/08C09K101/00
Inventor 张松
Owner 张松
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