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Preparation method of natural mineral-loaded nanometer fluorine removal agent

A natural mineral, loaded technology, applied in chemical instruments and methods, silicon compounds, silicates, etc., can solve the problems of agglomeration and deactivation of nanomaterials, secondary pollution of water bodies, etc., to prevent agglomeration, avoid decline, and simple process. Effect

Active Publication Date: 2014-04-09
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems existing in the prior art, the object of the present invention is to provide a preparation method of a natural mineral-supported nano-fluoride removal agent, which effectively improves the adsorption capacity of fluorine in water, and simultaneously avoids the agglomeration and deactivation of nano-materials and the The problem of secondary pollution of water bodies

Method used

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  • Preparation method of natural mineral-loaded nanometer fluorine removal agent
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  • Preparation method of natural mineral-loaded nanometer fluorine removal agent

Examples

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Effect test

Embodiment 1

[0045] (1) High-temperature activation treatment: 100 g of natural zeolite with a particle size of 1 mm was treated at a high temperature of 700 ° C for 8 hours;

[0046] (2) Acid activation treatment: add the zeolite after high temperature activation treatment to 200ml of 7% hydrochloric acid solution for acid activation treatment for 20 hours, then wash until the pH value is 6.5, then filter and dry;

[0047] (3) Alkali activation treatment: add the dried zeolite in (2) to 200ml of 10% sodium hydroxide solution for alkali activation treatment for 24 hours; then wash until the pH value is 7.5, then filter and dry;

[0048] (4) Metal salt reaction: add the dried zeolite in (3) to 150ml of aluminum chloride solution with a concentration of 4mol / L and react for 18 hours; then adjust the pH value of the solution to 5.5, then wash, filter, ℃ drying for 4.5 hours to obtain a natural mineral-supported nano-fluoride removal agent.

[0049] The scanning electron microscope picture...

Embodiment 2

[0055] (1) High-temperature activation treatment: 100 g of natural zeolite with a particle size of 1.5 mm was treated at a high temperature of 400 ° C for 20 hours;

[0056] (2) Acid activation treatment: add the zeolite after high temperature activation treatment to 250ml of 2% hydrochloric acid solution for acid activation treatment for 48 hours, then wash until the pH value is 6, then filter and dry;

[0057] (3) Alkali activation treatment: add the dried zeolite in (2) to 150ml of 15% sodium hydroxide solution for alkali activation treatment for 12 hours; then wash until the pH value is 7, then filter and dry;

[0058] (4) Metal salt reaction: add the dried zeolite in (3) to 350ml of aluminum sulfate solution with a concentration of 0.3mol / L and react for 48 hours; then adjust the pH value of the solution to 6, then wash, filter, ℃ drying for 1 hour to obtain a natural mineral-loaded nano-fluoride removal agent.

[0059]

Embodiment 3

[0061] (1) High-temperature activation treatment: 100 g of natural zeolite with a particle size of 3 mm was treated at a high temperature of 1000 ° C for 3 hours;

[0062] (2) Acid activation treatment: Add the zeolite after high temperature activation treatment to 100ml of 15% sulfuric acid solution for acid activation treatment for 6 hours, then wash until the pH value is 6.2, then filter and dry;

[0063] (3) Alkali activation treatment: add the dried zeolite in (2) to 100ml of 18% potassium hydroxide solution for alkali activation treatment for 12 hours; then wash until the pH value is 7, then filter and dry;

[0064] (4) Metal salt reaction: Add the dried zeolite in (3) to 105ml of aluminum nitrate solution with a concentration of 5mol / L and react for 12 hours; then adjust the pH value of the solution to 6, then wash, filter, and store Dry for 10 hours to obtain a natural mineral-loaded nano-fluoride removal agent.

[0065]

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Abstract

The invention discloses a preparation method of a natural mineral-loaded nanometer fluorine removal agent. The method comprises high-temperature activation treatment, acid activation treatment, alkali activation treatment and a metal salt reaction. Natural zeolite is high in mechanical strength and is full of fine holes and channels inside, and nanometer materials can be effectively fixed in the internal channels of the natural zeolite under a water flow condition when the natural zeolite is taken as a carrier of a nanometer fluorine removal material, so that the agglomeration and loss of the nanometer materials are avoided, and the fluorine adsorption capacity is increased. Moreover, the natural zeolite is reproducible, so that the fluorine removal cost is reduced. The fluorine removal agent with larger specific surface area can provide more active sites for realizing a high fluorine adsorption volume, and can be widely applied to the aspects of purification treatment of high-fluorine surface water and underground water, treatment of fluorine-containing sewage, and the like.

Description

[0001] Background technique [0002] Fluorine is one of the essential trace elements for the human body, but when the daily intake of fluorine is too high, it will lead to endemic fluorosis. Drinking high-fluoride water for a long time will lead to fluorosis, dental fluorosis and bone fluorosis. In mild cases, it will cause tooth deterioration and loss, and in severe cases, it will cause bone sclerosis or osteoporosis, and even paralysis, resulting in loss of work ability. According to the survey of the Ministry of Health, endemic fluorosis is widely distributed in my country, and endemic fluorosis exists in most provinces. Therefore, effective control and removal of fluorine in water is an important issue related to the environment and human health. [0003] Endemic fluorosis in my country is mainly divided into three types: one is drinking water type fluorosis, which is the most widely distributed type with the largest number of patients, and is mainly distributed in the va...

Claims

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Application Information

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IPC IPC(8): B01J20/16B01J20/30C02F1/28C02F1/58
Inventor 孙柏孔令涛贾勇遇鑫遥金震罗涛刘锦淮
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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