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Fluorine removing agent and preparing method thereof

A technology of defluorinating agent and exchange resin, which is applied in the field of materials, can solve the problems that the defluorinating agent cannot be industrialized, and achieve the effects of being unable to industrialize, high adsorption capacity, and high mechanical strength

Inactive Publication Date: 2017-01-04
JIANGSU HELPER FUNCTIONAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above technical problems, the object of the present invention is to provide a defluorinating agent with high mechanical strength, large adsorption capacity, high fluorine removal efficiency, reusable, simple preparation method, and overcome the shortcomings of existing defluorinating agents that cannot be industrialized

Method used

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  • Fluorine removing agent and preparing method thereof
  • Fluorine removing agent and preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Take 12g aluminum chloride, dissolve in 40ml deionized water to form a mixed solution, stir at room temperature until the solution is completely clear;

[0031] (2) Take 10g of anion exchange resin D201 and place it in an ion exchange column, rinse it with a dilute hydrochloric acid solution with a mass concentration of 5% at 0.5BV / h, rinse it with pure water until the effluent is neutral, take out D201, and put it into Soxhlet extractor, purified with ethanol, and dried in an oven at 50°C;

[0032] (3) Add the clarified solution obtained in step (1) into a reactor with a stirring and temperature control device, add 10 g of D201 pretreated in step (2), and stir for 10 h at a temperature of 45° C. in the first stage; The second stage was stirred at 60°C for 6h;

[0033] (4) Filter the solution obtained in step (3), add ammonia water, adjust the pH of the solution to 8.3, continue stirring at 60° C. for 10 h, cool, and wash with water;

[0034] (5) Add the resin obt...

Embodiment 2

[0038] (1) Take 17g aluminum chloride, dissolve in 60ml deionized water to form a mixed solution, stir at room temperature until the solution is completely clear;

[0039] (2) Take 10g of anion exchange resin D201 and place it in an ion exchange column, rinse with 5% dilute hydrochloric acid solution at a mass concentration of 0.5BV / h, rinse with pure water until the effluent is neutral, take out D201, and put it into a cable Extractor, purified with ethanol, and dried in an oven at 52°C;

[0040] (3) Add the clarified solution in step (1) to the reactor with a stirring and temperature control device, add 10 g of D201 pretreated in (2), and stir at a temperature of 45 °C for 10 h in the first stage; in the second stage Stir at 60°C for 6h;

[0041] (4) Filter the solution obtained in step (3), add ammonia water, adjust the pH of the solution to 8.5, continue to stir at 60° C. for 12 hours, cool, and wash with water;

[0042] (5) Add the resin obtained in step (4) into a lith...

Embodiment 3

[0045] (1) Take by weighing 19g aluminum chloride, dissolve in 60ml deionized water to form a mixed solution, stir at room temperature until the solution is completely clear;

[0046] (2) Take 10g of anion exchange resin D201 and place it in an ion exchange column, rinse with 5% dilute hydrochloric acid solution at a mass concentration of 0.5BV / h, rinse with pure water until the effluent is neutral, take out D201, and put it into a cable Extractor, purified with ethanol, and dried in an oven at 52°C;

[0047] (3) Add the clarified solution in step (1) to the reactor with a stirring and temperature control device, add 10 g of D201 pretreated in (2), and stir at a temperature of 50 °C for 8 hours in the first stage; in the second stage Stir at 65°C for 3h;

[0048] (4) Filter the solution in step (3), add ammonia water, adjust the pH of the solution to 8.2, continue stirring at 60° C. for 10 h, cool, and wash with water;

[0049] (5) Add the resin obtained in step (4) into a l...

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Abstract

The invention discloses a fluorine removing agent. The fluorine removing agent is a hybrid material of anion exchange resin, metal lithium and metal aluminum, and the molar ratio of lithium to aluminum in the fluorine removing agent is 1:2. The invention also discloses a preparing method of the fluorine removing agent. According to the organic-inorganic hybrid material mode, LDH is loaded with resin, active components can be quite good fixed, the mechanical strength of the material is high, the fluorine removing agent is suitable for an application of industrial fixed bed fluorine removing, and the problem that the powdery LDH can not be industrialized is solved. The fluorine removing agent can be repeatedly used for multiple times, the problem that the fluorine removing agent is not easily recycled is solved, and the fluorine removing agent has the good absorption effect after being used for multiple times. The fluorine removing agent is simple in preparing process, mild in condition and suitable for industrial mass production.

Description

technical field [0001] The invention relates to the field of materials, in particular to a defluorinating agent and a preparation method thereof. Background technique [0002] Fluorine is one of the essential trace elements for the human body. An appropriate amount of fluorine has a certain effect on preventing dental caries, and is an essential component for maintaining the normal development of bones in the body. However, excessive fluorine intake will affect the absorption of calcium and phosphorus in the human body, causing symptoms of fluorosis such as bone fluorosis and dental fluorosis. Excessive fluorine intake can also have adverse effects on the nervous system, endocrine system and the function of cotton clothes, causing brain damage, Alzheimer's and other diseases. my country's high-fluoride groundwater is widely distributed throughout 27 provinces and municipal autonomous regions, especially in North China and Northwest China. The World Health Organization reco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/04B01J20/34C02F1/28
CPCB01J20/0248B01J20/046B01J20/3433B01J2220/4806C02F1/281C02F2101/14
Inventor 蔡建国石洪雁付晓微
Owner JIANGSU HELPER FUNCTIONAL MATERIALS
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