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Modified anion resin material and its preparation method and application

An anion resin and modification technology, applied in the direction of anion exchange, organic anion exchanger, ion exchange, etc., can solve the problems that the preparation method has not been reported yet, and achieve good application prospects, good mechanical strength, and simple preparation process.

Active Publication Date: 2020-04-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both iron and zirconium metal elements are positively charged, and it is difficult to ion exchange with anion resins, and the preparation method of loading two oxides has not been reported yet.

Method used

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  • Modified anion resin material and its preparation method and application
  • Modified anion resin material and its preparation method and application
  • Modified anion resin material and its preparation method and application

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preparation example Construction

[0035]

[0036] A kind of preparation method of modified anion resin material, it comprises the steps:

[0037] (1), strong base type anion resin material is carried out 5-6 rinse with deionized water, and dry strong base type anion resin material that obtains drying;

[0038] (2), the hydrochloric acid solution of ferric chloride (FeCl 3 +HCl) and hydrochloric acid solution of zirconium oxychloride (ZrOCl 2 ·8H 2 O+HCl) are mixed to obtain the first mixed solution, then the dry strong base anion resin material of step (1) is added into the first mixed solution, and stirred at 25±5°C for impregnation;

[0039] (3), add sodium hydroxide (NaOH) solution in the reaction system of step (2) with the speed of 5 drops per second and adjust the pH value of this reaction system to 7‐8, stir at 25 ± 5 ° C to obtain the first Two mixed solution;

[0040] (4) Centrifuge the second mixed solution in step (3), and dry it to a constant weight to obtain a modified anion resin material. ...

Embodiment 1

[0056] The preparation method of the modified anion resin material of the present embodiment comprises the steps:

[0057] (1), strong base anion resin material (containing quaternary ammonium salt functional group) is rinsed 6 times with deionized water, and dry to obtain dry strong base anion resin material, the temperature of drying is 50 ℃, the drying The time is 12h;

[0058] (2), 0.1mol / L ferric chloride hydrochloric acid solution (FeCl 3 +HCl) and 0.1mol / L zirconium oxychloride hydrochloric acid solution (ZrOCl 2 ·8H 2 O+HCl) are mixed to obtain the first mixed solution, then the dry strong base anion resin material in step (1) is added into the first mixed solution, and stirred at 25°C for impregnation, wherein the stirred The rotating speed is 300rpm, and the soaking time is 2h;

[0059] (3), add 0.5mol / L sodium hydroxide (NaOH) solution in the reaction system of step (2) with the speed of 5 drops per second and adjust the pH value of this reaction system to be 7,...

Embodiment 2

[0068] The preparation method of the modified anion resin material of the present embodiment comprises the steps:

[0069] (1), strong base anion resin material (containing quaternary ammonium salt functional group) is rinsed 6 times with deionized water, and dry to obtain dry strong base anion resin material, the temperature of drying is 70 ℃, the drying The time is 24h;

[0070] (2), 0.5mol / L ferric chloride hydrochloric acid solution (FeCl 3 +HCl) and 0.5mol / L zirconium oxychloride hydrochloric acid solution (ZrOCl 2 ·8H 2 O+HCl) are mixed to obtain the first mixed solution, then the dry strong base anion resin material in step (1) is added into the first mixed solution, and stirred at 25°C for impregnation, wherein the stirred The rotating speed is 400rpm, and the soaking time is 3h;

[0071] (3), add 1.0mol / L sodium hydroxide (NaOH) solution in the reaction system of step (2) with the speed of 5 drops per second and adjust the pH value of this reaction system to be 7,...

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Abstract

The invention provides a modified anion resin material as well as a preparation method and an application thereof. The preparation method comprises the steps as follows: a strong base type anion resinmaterial is washed and dried, and a dried strong base type anion resin material is obtained; a hydrochloric acid solution of ferric chloride and a hydrochloric acid solution of zirconium oxychlorideare mixed, a mixed solution is obtained, then, the dried strong base type anion resin material is added to a mixed solution to be treated, and the modified anion resin material is obtained. The modified anion resin material can be used as a phosphorus removal adsorbent. Iron oxide and zirconium oxide are successfully loaded on the strong base type anion resin material, so that the modified anion resin material retains the adsorptive property of the iron oxide and the zirconium oxide for phosphorus and provides a fixed environment of good mechanical strength and excellent hydraulic performance,and the excellent adsorption effect of the iron oxide and the zirconium oxide for phosphorus is played.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a modified anion resin material and its preparation method and application. Background technique [0002] In recent years, with the development of industry and the continuous enhancement of human activities, a large amount of phosphorus-rich industrial wastewater and domestic sewage have been discharged into water bodies, resulting in increasingly serious water eutrophication in my country and restricting the sustainable development of society. Therefore, actively seeking economical and effective wastewater phosphorus removal methods will help improve water quality and reduce pollution. [0003] At present, the phosphorus removal methods of sewage are mainly divided into biological methods, chemical precipitation methods and adsorption methods. Among them, the biological phosphorus removal process is relatively complicated, and the stability of the effluent w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J41/05B01J41/10B01J41/12B01J20/26C02F1/28C02F1/42B01J20/30C02F101/10
Inventor 柴晓利周焜李梦雯武博然杨宁周萌李建国
Owner TONGJI UNIV
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