Magnesium oxide composite material for fluorine removal of water body and preparation method and application thereof

A composite material, magnesium oxyfluoride technology, applied in chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve problems such as difficulty in application and loss of active components

Inactive Publication Date: 2018-11-06
TIANJIN MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnesium oxide is in a powder state, and the loss of active components is extreme...

Method used

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  • Magnesium oxide composite material for fluorine removal of water body and preparation method and application thereof
  • Magnesium oxide composite material for fluorine removal of water body and preparation method and application thereof
  • Magnesium oxide composite material for fluorine removal of water body and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A magnesium oxide composite material for removing fluoride from water, which is composed of the following raw materials in weight fractions: 30 parts of magnesium oxide, 2 parts of adhesive, and 40 parts of carrier particles; wherein the adhesive is cellulose acetate; the carrier particles are Activated carbon.

[0023] Preparation:

[0024] (1) Dissolve the adhesive with a solvent; the ratio of adhesive to solvent is 1:5 (w:v);

[0025] (2) Add the carrier particles into the adhesive solution, stir and mix evenly;

[0026] (3) Add magnesium oxide and mix well. Make magnesium oxide-adhesive agent-carrier particle composite;

[0027] (4) Place the magnesium oxide-adhesive agent-carrier particle composite in an oven for high-temperature curing at a temperature of 180° C. and a high-temperature curing time of 30 minutes to obtain a magnesium oxide composite material; the solvent is acetone.

[0028] [Effect of removing fluorine in Example 1]

[0029] Fluoride removal ...

Embodiment 2

[0034] A water body defluoridation magnesium oxide composite material, which is composed of the following raw materials in weight fractions: 50 parts of magnesium oxide, 10 parts of adhesive, 60 parts of carrier particles; wherein the adhesive is polystyrene; the carrier particles are Chitosan.

[0035] Preparation:

[0036] (1) Dissolve the adhesive with a solvent; the ratio of adhesive to solvent is 1:30 (w:v);

[0037] (2) Add the carrier particles into the adhesive solution, stir and mix evenly;

[0038] (3) Add magnesium oxide and mix well. Make magnesium oxide-adhesive agent-carrier particle composite;

[0039] (4) Place the magnesium oxide-adhesive agent-carrier particle composite in an oven for high-temperature curing, the temperature is 150°C, and the high-temperature curing time is 20 minutes to obtain a magnesium oxide composite material; the solvent is dimethylformamide:tetrahydrofuran =4:6(v:v).

[0040] [Effect of removing fluorine in Example 2]

[0041] In...

Embodiment 3

[0046] A magnesium oxide composite material for removing fluoride from water, which is composed of the following raw materials in weight fractions: 45 parts of magnesium oxide, 18 parts of adhesive, and 55 parts of carrier particles; wherein the adhesive is cellulose acetate; the carrier particles are diatomite.

[0047] Preparation:

[0048] (1) Dissolve the adhesive with a solvent; the ratio of adhesive to solvent is 1:25 (w:v);

[0049](2) Add the carrier particles into the adhesive solution, stir and mix evenly;

[0050] (3) Add magnesium oxide and mix well. Make magnesium oxide-adhesive agent-carrier particle composite;

[0051] (4) Place the magnesium oxide-adhesive agent-carrier particle composite in an oven for high-temperature curing at a temperature of 230° C. and a high-temperature curing time of 150 minutes to obtain a magnesium oxide composite material; the solvent is acetone.

[0052] [Example 3 defluoridation effect]

[0053] The curing effect of magnesium ...

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PUM

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Abstract

The invention provides a magnesium oxide composite material for fluorine removal of a water body and a preparation method and application thereof. The fluorine removal material is characterized in that inert particles are used as a carrier, and the magnesium oxide is coated to the surface of the carrier by an adhesive and is cured, so as to form the magnesium oxide composite material. The magnesium oxide composite material is prepared from the following components of 30 to 50 parts of magnesium oxide, 0.1 to 20 parts of adhesive and 40 to 60 parts of carrier particles. The magnesium oxide composite material has the characteristics that the adsorption and fluorine removal activity of the magnesium oxide is reserved, the magnesium oxide is effectively cured, and the loss in the use process is greatly reduced; the sources of the raw materials are rich, the price is low, and the preparation is simple; the fluorine removal efficiency is higher, and the fluorine removal requirement of drinking water can be met.

Description

technical field [0001] The invention belongs to the field of adsorption materials, and in particular relates to a magnesium oxide composite material for removing fluoride from water, a preparation method and application thereof. Background technique [0002] Endemic drinking-water fluorosis caused by high-fluoride drinking water is becoming more and more serious around the world. Fluorine is one of the essential trace elements for the human body, but excessive intake of fluorine can cause fluorosis. [0003] Human health problems caused by drinking high-fluoride water mainly focus on damage to teeth and bones (dental and bone fluorosis), changes in DNA structure (gene mutations, birth defects) and promotion of certain diseases (cancer, Alzheimer’s disease) silent disease, kidney and nerve damage), etc. Therefore, the treatment of fluoride-containing drinking water to make it meet the hygienic standards of drinking water has always been valued by the scientific community an...

Claims

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Application Information

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IPC IPC(8): B01J20/04B01J20/28B01J20/30C02F1/28C02F101/14
CPCB01J20/041B01J20/28016B01J20/3042C02F1/281C02F2101/14
Inventor 沈钧张万起潘子赟陈利琴高述徐祯
Owner TIANJIN MEDICAL UNIV
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