Magnetic magnesium hydroxide adsorbent and preparation method thereof

A magnesium hydroxide and adsorbent technology, applied in the field of magnetic magnesium hydroxide adsorbent and its preparation, can solve problems such as difficult separation, and achieve the effects of short production cycle, good technical versatility and good adsorption performance

Active Publication Date: 2020-09-18
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Nanomaterials have attracted widespread attention because of their large specific surface area and high adsorption capacity, but when nanomaterials are applied to water treatment, separation becomes a difficult problem

Method used

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  • Magnetic magnesium hydroxide adsorbent and preparation method thereof
  • Magnetic magnesium hydroxide adsorbent and preparation method thereof
  • Magnetic magnesium hydroxide adsorbent and preparation method thereof

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Embodiment 1

[0029] A kind of magnetic magnesium hydroxide adsorbent of the present invention, this magnetic magnesium hydroxide adsorbent comprises porous magnesium hydroxide and Fe 3 o 4 Nanoparticles, magnetic magnesium hydroxide adsorbent with porous magnesium hydroxide as the carrier, porous magnesium hydroxide loaded and filled with Fe 3 o 4 Nanoparticles.

[0030] A kind of preparation method of the magnetic magnesium hydroxide adsorbent of above-mentioned present embodiment, comprises the following steps:

[0031] (1) Preparation of magnesium hydroxide carrier: under rapid and continuous stirring at a speed of 500 rpm, an equal volume (specifically 100 mL) of 1 mol / L NaOH solution was added dropwise to 0.5 mol / L (MgSO 4 Concentration) containing MgSO 4 In the microemulsion system, after the dropwise addition, continue to stir at 200rpm for 6h, let it stand for aging for 24h, wash the product alternately with water and ethanol until the pH is neutral, and dry it at 50°C to obtai...

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Abstract

The invention discloses a magnetic magnesium hydroxide adsorbent and a preparation method thereof. The magnetic magnesium hydroxide adsorbent is loaded on porous magnesium hydroxide as a carrier and filled with nano Fe3O4 particles. The preparation method comprises the following steps: (1) dropwise adding an NaOH solution to a micro emulsion system containing MgSO4 for preparing the porous magnesium hydroxide; and (2) dissolving the porous magnesium hydroxide carrier in absolute ethyl alcohol, conducting ultrasonic dispersion, adding an iron salt solution, and regulating the pH value of the obtained mixed solution to 10-11 under the conditions of inert-gas protection and stirring to obtain the magnetic magnesium hydroxide adsorbent. The preparation method disclosed by the invention has a simple process and low cost, and the prepared adsorbent has strong adsorption properties on heavy metals and organic pollutants, and also has the advantages of big adsorption capacity, easy separation and the like.

Description

technical field [0001] The invention belongs to the field of environmental functional materials, and in particular relates to a magnetic magnesium hydroxide adsorbent and a preparation method thereof. Background technique [0002] With the development of industry, all kinds of wastewater containing heavy metals or organic pollutants from electroplating, mining and metallurgy, tanning, dyeing (painting) materials, pesticides and pharmaceuticals have caused serious harm to the environment and seriously threatened the environment. People's lives are safe. Therefore, how to remove pollutants in wastewater is particularly important in the process of water pollution control and water environment restoration. The adsorption method is favored by everyone in the water treatment process because of its advantages of simple operation, low cost, safety, and mild reaction conditions. [0003] Magnesium hydroxide is widely used in the adsorption (neutralization) of acidic substances beca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/04B01J20/28B01J20/30C02F1/28C02F101/20C02F101/30
CPCB01J20/041B01J20/28009B01J20/28059C02F1/281C02F2101/20C02F2101/30
Inventor 林毅青陈安伟邵继海罗斯彭亮尚翠
Owner HUNAN AGRICULTURAL UNIV
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