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Composite material for removing fluorinion in water and preparation method thereof

A composite material and water removal technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve problems that affect the efficient adsorption of fluoride ions by activated carbon, limited adsorption capacity of activated carbon to fluorine, and poor adsorption performance. Achieve the effect of fast adsorption speed, stable adsorption effect and large porosity

Inactive Publication Date: 2017-01-11
青岛引黄济青水务集团有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the actual operation process, the effective adsorption capacity of activated carbon is easily saturated by natural organic matter and trace organic pollutants in water, which affects the efficient adsorption of activated carbon to fluoride ions, resulting in limited adsorption capacity of activated carbon to fluorine
[0005] How to overcome the deficiencies of the existing activated carbon in removing fluorine, improve the poor selective adsorption performance and weak anti-interference ability of activated carbon to fluorine ions in water, and prepare an economical and easy-to-operate adsorbent has great practical significance

Method used

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  • Composite material for removing fluorinion in water and preparation method thereof
  • Composite material for removing fluorinion in water and preparation method thereof
  • Composite material for removing fluorinion in water and preparation method thereof

Examples

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Embodiment 1

[0053] A composite material for removing fluorine ions in water, the composite material is a composite of manganese dioxide and activated carbon, wherein the manganese dioxide is supported on the surface of the activated carbon. There are pores on the surface of the composite material, and the specific surface area of ​​the composite material is 802.51m 2 / g.

[0054] A method for preparing a composite material for removing fluoride ions in water, comprising:

[0055] (1) Activated carbon pretreatment: get the activated carbon particles with a particle size of 20 meshes, rinse them twice with deionized water, then dry them for later use;

[0056] (2) Manganese acetate solution is prepared: get manganese acetate tetrahydrate and join in distilled water for stirring and dissolving to obtain manganese acetate solution; the concentration of the prepared manganese acetate solution is 0.2mol / L;

[0057] (3) Take the activated carbon after the above-mentioned pretreatment with the ...

Embodiment 2

[0061] A composite material for removing fluorine ions in water, the composite material is a composite of manganese dioxide and activated carbon, wherein the manganese dioxide is supported on the surface of the activated carbon. There are pores on the surface of the composite material, and the specific surface area of ​​the composite material is 997.30m 2 / g.

[0062] A method for preparing a composite material for removing fluoride ions in water, comprising:

[0063] (1) Activated carbon pretreatment: get the activated carbon particles with a particle size of 40 meshes, rinse them repeatedly with deionized water for 3 times, then dry them for later use;

[0064] (2) Manganese acetate solution is prepared: get manganese acetate tetrahydrate and join in distilled water for stirring and dissolving to obtain manganese acetate solution; the concentration of the prepared manganese acetate solution is 0.8mol / L;

[0065] (3) Take the activated carbon after the above-mentioned pretr...

Embodiment 3

[0069] A composite material for removing fluoride ions in water, the composite material is a composite of manganese dioxide and activated carbon, wherein the manganese dioxide is supported on the surface of the activated carbon. There are pores on the surface of the composite material, and the specific surface area of ​​the composite material is 914.17m 2 / g.

[0070] A method for preparing a composite material for removing fluoride ions in water, comprising:

[0071] (1) Activated carbon pretreatment: take the activated carbon particles with a particle size of 30 meshes, rinse them twice with deionized water, and then dry them for later use;

[0072] (2) Manganese acetate solution is prepared: get manganese acetate tetrahydrate and join in distilled water for stirring and dissolving to obtain manganese acetate solution; the concentration of the prepared manganese acetate solution is 0.5mol / L;

[0073] (3) Take the activated carbon after the above-mentioned pretreatment with...

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Abstract

The invention belongs to the field of water treatment, and particularly relates to a composite material. The composite material is a compound of manganese dioxide and activated carbon, wherein the manganese dioxide is loaded to the surface of the activated carbon. The method comprises the following steps: washing activated carbon particles with deionized water, and drying for later use; adding manganese acetate tetrahydrate into distilled water, and dissolving by stirring to obtain a manganese acetate solution; adding treated activated carbon into the manganese acetate solution, and adding a potassium permanganate solution; removing suspension, repeatedly washing the remained material with deionized water until the eluate is clear, and drying to obtain a manganese dioxide / activated carbon composite material. According to the method, manganese dioxide is loaded on conventional activated carbon in the water treatment process, the problem that conventional activated carbon can only preferentially adsorb natural organic matters and trace organic pollutants but cannot adsorb fluorinion in the water can be solved, fluorinion in drinking water can be reduced, and the problem that the content of fluorine in the drinking water exceeds standard can be solved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a manganese dioxide / activated carbon composite material and a preparation method thereof. Background technique [0002] Fluorine is one of the essential trace elements for human body. Insufficient or too much fluorine intake by the human body from the outside world will affect the health of the body. Fluorine deficiency is prone to dental caries, and drinking water with high fluoride content for a long time will cause excessive accumulation of fluorine in the body, which will lead to chronic fluorosis. my country's drinking water hygiene standards stipulate that the fluorine content in drinking water shall not exceed 1.0mg / L. [0003] my country is a country with serious fluoride hazards, with a population of about 200 million in fluorosis areas, and endemic fluorosis in drinking water is the main manifestation of fluoride hazards. On the other hand, the wastewater pro...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/14
CPCB01J20/20B01J20/0222C02F1/281C02F1/283C02F2101/14
Inventor 马越
Owner 青岛引黄济青水务集团有限公司
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