Preparation method of montmorillonite-modified soil remediation agent

A soil remediation agent and montmorillonite technology, which is applied in the field of soil remediation, can solve the problems of reducing the migration speed of heavy metal elements, and achieve the effects of solving the problem of heavy metal pollution, improving the market promotion and application value, and reducing the migration speed.

Inactive Publication Date: 2019-02-22
马步华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the existing problems, to provide a preparation method of montmorillonite modified material soil remediation agent, which can effectively absorb heavy metals in soil, greatly reduce the migration speed of heavy metal elements, and solve the problem of heavy metals in soil Pollution problem, has very good market promotion and application value

Method used

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  • Preparation method of montmorillonite-modified soil remediation agent

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Comparison scheme
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Embodiment 1

[0039] A preparation method of montmorillonite modified material soil remediation agent, comprising the steps of:

[0040] (1) Preparation of modified montmorillonite:

[0041] a. The montmorillonite is placed in a numerically controlled continuous steam explosion machine for continuous steam explosion treatment, and the total time of steam explosion treatment is 30s;

[0042] b. First immerse the steam explosion product obtained in operation a in biochemical fulvic acid with a mass fraction of 5% for 30 minutes, then filter it out, rinse it with deionized water, and dry it for later use;

[0043] c. Put sodium dodecylbenzenesulfonate and sodium glycocholate into the mixing tank at a weight ratio of 2:2.3, heat to keep the temperature in the mixing tank at 70°C, and stir for 20 minutes to obtain modified liquid A for later use ;

[0044] d. First put 50% glycerin and 75% ethanol into the reaction kettle at a volume ratio of 3:5, stir and mix well, then raise the temperature ...

Embodiment 2

[0066] A preparation method of montmorillonite modified material soil remediation agent, comprising the steps of:

[0067] (1) Preparation of modified montmorillonite:

[0068] a. The montmorillonite is placed in a numerically controlled continuous steam explosion machine for continuous steam explosion treatment, and the total time of steam explosion treatment is 35s;

[0069] b. First immerse the steam explosion product obtained in operation a in biochemical fulvic acid with a mass fraction of 6% for 35 minutes, then filter it out, rinse it with deionized water, and dry it for later use;

[0070] c. Put sodium dodecylbenzenesulfonate and sodium glycocholate into the stirring tank at a weight ratio of 2.5:2.5, heat to keep the temperature in the stirring tank at 75°C, and stir for 25 minutes to obtain modified liquid A for later use ;

[0071] d. First put 50% glycerin and 75% ethanol into the reaction kettle at a volume ratio of 3.5:5.5, stir and mix well, then raise the te...

Embodiment 3

[0093] A preparation method of montmorillonite modified material soil remediation agent, comprising the steps of:

[0094] (1) Preparation of modified montmorillonite:

[0095] a. The montmorillonite is placed in a numerically controlled continuous steam explosion machine for continuous steam explosion treatment, and the total time of steam explosion treatment is 40s;

[0096] b. First immerse the steam explosion product obtained in operation a into biochemical fulvic acid with a mass fraction of 7% for 40 minutes, then filter it out, rinse it with deionized water, and dry it for later use;

[0097] c. Put sodium dodecylbenzenesulfonate and sodium glycocholate into the mixing tank at a weight ratio of 3:2.7, heat to keep the temperature in the mixing tank at 80°C, and stir for 30 minutes to obtain modified liquid A for later use ;

[0098]d. First put 50% glycerin and 75% ethanol into the reaction kettle at a volume ratio of 4:6, stir and mix well, then raise the temperature...

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Abstract

The invention discloses a preparation method of a montmorillonite-modified soil remediation agent. The preparation method of the montmorillonite-modified soil remediation agent comprises the followingsteps of (1) preparation of modified montmorillonite, (2) preparation of biomass charcoal, (3) raw material weighing and (4) preparation of finished products. The prepared montmorillonite-modified soil remediation agent can effectively absorb soil heavy metal, greatly reduce the migration speed of heavy metal elements and well solve the problem of soil heavy metal pollution, thereby having high marketing values.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a preparation method of a montmorillonite modified material soil remediation agent. Background technique [0002] Among the soil inorganic pollutants, heavy metals are more prominent, mainly because heavy metals cannot be decomposed by soil microorganisms and are easy to accumulate. Transform into more toxic methyl compounds, and some even accumulate in the human body at harmful concentrations through the food chain, seriously endangering human health. Soil heavy metal pollutants mainly include mercury, cadmium, lead, copper, chromium, arsenic, nickel, iron, manganese, zinc and so on. [0003] Montmorillonite is a kind of clay, which contains the characteristic substance montmorillonite, and its chemical composition belongs to calcium silicate hydrate. Montmorillonization produces a gel-like granular structure. Montmorillonite has high water absorption and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/00B09C1/08C01B33/44
CPCB09C1/00B09C1/08C01B33/44C09K17/40
Inventor 马步华
Owner 马步华
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