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Preparation method of magnetic stripping type montmorillonite nanocomposite material for wastewater treatment

A nano-composite material and montmorillonite technology, which is applied in the field of preparation of magnetic exfoliated montmorillonite nano-composite materials, can solve the problems of difficult recovery of adsorbent materials, low adsorption efficiency, etc., and achieves simple preparation process, strong adsorption capacity, high The effect of adsorption properties

Active Publication Date: 2015-01-07
马鞍山健鼎化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of difficult recovery and low adsorption efficiency of montmorillonite as an adsorption material in the prior art, and provides a method for preparing a magnetically exfoliated montmorillonite nanocomposite material; the magnetically exfoliated montmorillonite prepared by the method of the present invention Nanocomposites adsorb heavy metal ions and cationic dyes in wastewater with excellent adsorption properties

Method used

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  • Preparation method of magnetic stripping type montmorillonite nanocomposite material for wastewater treatment
  • Preparation method of magnetic stripping type montmorillonite nanocomposite material for wastewater treatment

Examples

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Effect test

Embodiment 1

[0021] Disperse 3.0 g of sodium montmorillonite in 600 mL of distilled water, adjust the pH of the solution to 3 with hydrochloric acid, then add 2.4 g of modifier to the above solution, mix and stir for 4 hours, filter and wash with water to obtain organic modified montmorillonite. off the soil. Take 1.66g of organically modified montmorillonite and disperse it in 700mL of distilled water, add 2.69g of ferric chloride hexahydrate and 1.32g of ferrous chloride tetrahydrate, pass N 2 After stirring for 30 minutes, add ammonia solution at 80°C, control the pH value of the solution at 10-11, stir and react for 2 hours, cool, filter, wash, dry, grind and disperse to obtain magnetic exfoliation montmorillonite nanocomposites.

[0022] Take 0.10g of the above-mentioned nanocomposite material and put it into 100mL methylene blue solution with an initial concentration of 60mg / L. After adsorption for 6h, after the adsorbent is separated by a magnet, the concentration of methylene blue ...

Embodiment 2

[0026] Disperse 3.0 g of sodium montmorillonite in 300 mL of distilled water, adjust the pH of the solution to 3 with hydrochloric acid, then add 1.2 g of modifier to the above solution, mix and stir for 4 hours, filter and wash with water to obtain organic modified montmorillonite. off the soil. Take 2.32g of organically modified montmorillonite and disperse it in 700mL of distilled water, add 2.69g of ferric chloride hexahydrate and 1.32g of ferrous chloride tetrahydrate, pass N 2 After stirring for 30 minutes, add ammonia solution at 80°C, control the pH value of the solution at 10-11, stir and react for 2 hours, cool, filter, wash, dry, grind and disperse to obtain magnetic exfoliation montmorillonite nanocomposites.

[0027] Take 0.10g of the above-mentioned nanocomposite material and put it into 100mL methylene blue solution with an initial concentration of 60mg / L. After adsorption for 6h, after the adsorbent is separated by a magnet, the concentration of methylene blue ...

Embodiment 3

[0031] Disperse 4.5g of sodium-based montmorillonite in 300mL of distilled water, adjust the pH of the solution to 3 with hydrochloric acid, then add 0.9g of modifier to the above solution, mix and stir for 4 hours, filter and wash with water to obtain organic modified montmorillonite. off the soil. Take 2.69g of organically modified montmorillonite and disperse it in 700mL of distilled water, add 2.69g of ferric chloride hexahydrate and 1.32g of ferrous chloride tetrahydrate, pass N 2 After stirring for 30 minutes, add ammonia solution at 80°C, control the pH value of the solution at 10-11, stir and react for 2 hours, cool, filter, wash, dry, grind and disperse to obtain magnetic exfoliation montmorillonite nanocomposites.

[0032] Take 0.10g of the above-mentioned nanocomposite material and put it into 100mL methylene blue solution with an initial concentration of 60mg / L. After adsorption for 6h, after the adsorbent is separated by a magnet, the concentration of methylene bl...

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Abstract

The invention discloses a preparation method of a magnetic stripping type montmorillonite nanocomposite material for wastewater treatment, and belongs to the technical field of the preparation of nanocomposite materials. The method comprises the following steps: modifying a large quantity of carboxyl on the surface of montmorillonite, adopting a home position chemical reaction for introducing magnetic nanoparticles between montmorillonite layers to obtain a stripping type structure, and combining the magnetic separation property of ferroferric oxide and high adsorption characteristics of carboxyl modifying montmorillonite for organic cation dye and heavy metal ions to obtain a magnetic stripping type montmorillonite nanocomposite adsorbing material which is capable of magnetic separation and is strong in adsorption capacity. The preparation technology of the preparation method disclosed by the invention is simple, and the condition can be controlled; the prepared magnetic stripping type montmorillonite nanocomposite material is low in cost, easy to separate, high in adsorption characteristics and excellent in environmental friendly characteristics; the adsorption efficiency and the adsorption capacity for the organic cation dye and the heavy metal ions can be remarkably improved, so that the preparation method is suitable for the fields of industrial wastewater treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite material preparation, and in particular relates to a method for preparing a magnetic exfoliation montmorillonite nanocomposite material used for wastewater treatment. Background technique [0002] With the development of modern industry and agriculture, a large number of toxic and harmful substances in people's production and life enter the water body, and the water environment on which human beings rely for survival and development has been seriously damaged. Due to the relative lack of water resources in our country, wastewater treatment technology plays an increasingly important role in production and life. [0003] Organic dye wastewater has the characteristics of high concentration, deep color, large fluctuations in water quality, and poor biochemical properties. It is a type of industrial wastewater that is difficult to treat. Cationic dyes contain very complex aromatic groups and are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30
CPCB01J20/22B01J20/28009B01J20/3085B01J2220/46C02F1/288
Inventor 陈均赵永腾洪小琴张千峰
Owner 马鞍山健鼎化工有限公司
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