Synthesis method of adsorbent for removing fluorine in high salt

A synthesis method and adsorbent technology, which is applied in the field of fluorine removal adsorbent synthesis in high salt, can solve the problems of low fluorine removal efficiency, secondary pollution, high operation and maintenance costs, etc., and achieve high fluoride removal capacity and affinity, Efficient defluorination and low cost effects

Pending Publication Date: 2022-02-25
JIANGSU HELPER FUNCTIONAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the above methods require high operation and maintenance costs, and produce secondary pollution, and the removal efficiency of fluorine is not high in high-salt environment

Method used

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  • Synthesis method of adsorbent for removing fluorine in high salt
  • Synthesis method of adsorbent for removing fluorine in high salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Put 2g of chlorine ball resin (made by Jiangsu Haipu Functional Materials Co., Ltd.) into a three-necked flask, add 50mL of absolute ethanol to swell, and stir at room temperature for 8h.

[0036] 2. Add 10 mL of 20% NaOH aqueous solution and 2 g of 2-aminoquinoline-6-carboxamide, stir at 40° C. for 3 hours, and then filter the excess reaction solution with suction.

[0037] 3. Add 2 g of 2-aminoquinoline-3-carboxylic acid and 50 mL of DMSO to the above resin, and react under reflux at 80° C. for 4 h. Suction filtration, washing with ethanol and deionized water 3 times.

[0038] 4. Mix 1g of heavy metal salt solution: Cu(NO 3 ) 2 Dissolve in 50 mL of a mixed solution of ethanol and water with a volume ratio of 1:1.

[0039] 5. Add the above-mentioned resin to the above-mentioned nitrate solution, distill under reduced pressure at 80°C for 4 hours, filter the excess solution with suction, wash with distilled water until neutral, and dry in an oven at 60°C.

Embodiment 2

[0041] 1. Add 3g of chlorine ball resin (made by Jiangsu Haipu Functional Materials Co., Ltd.) into a three-necked flask, add 60mL of DMF to swell, and stir at room temperature for 8h.

[0042] 2. Add 10 mL of 30% NaOH aqueous solution and 2 g of 2-aminoquinoline-4-carboxamide, stir at 50° C. for 3 hours, and then filter the excess reaction solution with suction.

[0043] 3. Add 2 g of 2-aminoquinoline-3-carboxylic acid and 60 mL of DMF to the above resin, and react under reflux at 80° C. for 4 h. Suction filtration, washing with ethanol and deionized water 3 times.

[0044] 4. Mix 2g of heavy metal salt solution: Ce(NO 3 ) 3 Dissolve in 50mL of a mixed solution of ethanol and water with a volume ratio of 1:2.

[0045] 5. Add the above-mentioned resin to the above-mentioned nitrate solution, distill under reduced pressure at 70°C for 4 hours, filter the excess solution with suction, wash with distilled water until neutral, and dry in an oven at 70°C.

Embodiment 3

[0047] 1. Put 8g of chlorine ball resin (made by Jiangsu Haipu Functional Materials Co., Ltd.) into a three-necked flask, add 100mL of toluene to swell, and stir at room temperature for 10h.

[0048] 2. Add 10 mL of 50% NaOH aqueous solution and 4 g of 2-aminoquinoline-6-carboxamide, stir at 60° C. for 6 hours, and then filter the excess reaction solution with suction.

[0049] 3. Add 5 g of 4-aminoquinoline-3-carboxylic acid and 100 mL of acetone to the above resin, and react under reflux at 100° C. for 7 h. Suction filtration, washing with ethanol and deionized water 3 times.

[0050] 4. Mix 7g of heavy metal salt solution: Zr(NO3 ) 4 Dissolve in 100mL of a mixed solution of ethanol and water with a volume ratio of 1:4.

[0051] 5. Add the above-mentioned resin to the above-mentioned nitrate solution, distill under reduced pressure at 100°C for 6 hours, filter the excess solution with suction, wash with deionized water until neutral, and dry in an oven at 60°C.

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Abstract

The invention relates to a synthesis method of an adsorbent for removing fluorine in high salt, and belongs to the technical field of separation of fluorine-containing wastewater. The synthesis method of the adsorbent comprises the following steps: (1) swelling chloromethylated resin in an organic solvent, respectively adding an alkali and a quinoline amide derivative, stirring and reacting to obtain a mixture containing resin, and carrying out solid-liquid separation to take a solid phase which is modified chloromethylated bead resin 1; (2) adding a quinoline derivative and the organic solvent into the modified chloromethylated bead resin 1 in the step (1), stirring and mixing, and carrying out heating reflux reaction to obtain chloromethylated bead modified resin 2; and (3) adding a nitrate solution into the chloromethylated bead modified resin 2 obtained in the step (2), and reacting to obtain the defluorination adsorbent after the reaction is finished. The prepared modified defluorination material is simple in preparation process, low in cost, easy to recycle and high in defluorination efficiency in wastewater.

Description

technical field [0001] The invention belongs to the technical field of separation of fluorine-containing wastewater, in particular to a method for synthesizing an adsorbent for removing fluoride in high-salt water. Background technique [0002] In recent years, the improvement of environmental protection treatment capacity of fluorine chemical enterprises is the only way to enhance market competitiveness. The global market demand for fluorine-containing chemicals has grown rapidly, and the number of chemical and pharmaceutical companies has increased sharply, producing a large number of fluorine-containing products such as fluorine-containing electronic chemicals, fluorine-containing fine chemicals, fluorine-containing polymers, and fluorine-containing coatings. It is a large amount of fluorine-containing wastewater, and the treatment of fluorine-containing high-salt wastewater in the fluorine chemical industry is still a difficult point in this industry. Industrial high-sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C08F8/30C08F212/08B01J20/30C02F1/28C02F101/14
CPCB01J20/265C08F8/30C02F1/285C02F2101/14C08F212/08
Inventor 蔡建国石洪雁刘锐
Owner JIANGSU HELPER FUNCTIONAL MATERIALS
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