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Compound nano repairing agent for heavy metal contaminated soil and preparation method of compound nano repairing agent

A technology that pollutes soil and heavy metals, applied in the field of soil remediation, can solve problems such as human health hazards and reduce the quality of agricultural products, and achieve the effects of reducing mobility, enhancing cation adsorption capacity, and reducing hydrogen ion concentration

Pending Publication Date: 2020-05-05
JIANGSU TENGLONG BIOLOGICAL PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy metal pollution in the soil environment will reduce the quality of agricultural products, and these products will also bring potential harm to human health after being eaten

Method used

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  • Compound nano repairing agent for heavy metal contaminated soil and preparation method of compound nano repairing agent
  • Compound nano repairing agent for heavy metal contaminated soil and preparation method of compound nano repairing agent
  • Compound nano repairing agent for heavy metal contaminated soil and preparation method of compound nano repairing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A compound nano-remediation agent for heavy metal-contaminated soil provided in this example comprises the following components in kilograms by weight: 52 kg of nano-iron, 70 kg of nano-titanium oxide, 35 kg of nano-carbon, 55 kg of biochar, 7 kg of lime, powder Coal ash 13kg.

Embodiment 2

[0021] A compound nano-remediation agent for heavy metal-contaminated soil provided in this example includes the following components in kilograms by weight: 57 kg of nano-iron, 73 kg of nano-titanium oxide, 42 kg of nano-carbon, 50 kg of biochar, 5 kg of lime, powder Coal ash 15kg.

Embodiment 3

[0023] A compound nano-remediation agent for heavy metal-contaminated soil provided in this example comprises the following components in kilograms by weight: 60 kg of nano-iron, 65 kg of nano-titanium oxide, 45 kg of nano-carbon, 42 kg of biochar, 10 kg of lime, powder Coal ash 11kg.

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Abstract

The invention discloses a compound nano repairing agent for heavy metal contaminated soil and a preparation method of the compound nano repairing agent. The soil remediation agent comprises the following components in parts by weight: 50-60 parts of nano iron, 65-80 parts of nano titanium oxide, 35-45 parts of nano black carbon, 40-60 parts of charcoal, 5-10 parts of lime and 10-15 parts of fly ash. By utilizing the characteristic that the nano material and the heavy metal are subjected to chemical reaction or surface adsorption, various nano materials are added, so that the surface area is increased, the adsorption capacity is remarkably enhanced, the heavy metal can be strongly adsorbed, and the migration and transformation of the heavy metal in soil are reduced.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a composite nano-remediation agent for heavy metal polluted soil and a preparation method thereof. Background technique [0002] With the development of modern industrialization and urbanization, human activities have led to increasingly serious heavy metal pollution in the soil environment. Heavy metal pollution in the soil environment will reduce the quality of agricultural products, and these products will also bring potential harm to human health after being eaten. The harmfulness of heavy metals to the human body is concentrated in the difficulty of degrading heavy metals. Generally, organic compounds can reduce or remove their harmfulness through physical, chemical or biological purification in nature itself; while heavy metals are enriched, difficult to degrade in the environment, and enriched by hundreds of times through the biological amplification of the food ...

Claims

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Application Information

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IPC IPC(8): C09K17/08C09K17/06C09K109/00
CPCC09K17/08C09K17/06C09K2109/00
Inventor 肖建中
Owner JIANGSU TENGLONG BIOLOGICAL PHARMA
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