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MOF-loaded resin composite adsorbent as well as preparation method and application thereof

A resin composite and composite adsorption technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problems of low removal efficiency and anti-interference ability, and achieve effective reuse and good material stability , High stability effect

Active Publication Date: 2019-12-03
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Purpose of the invention: The present invention aims at the problems of low removal efficiency and low anti-interference ability of existing phosphorus removal adsorption materials under low concentration conditions. The present invention adopts the MOF in-situ generation method. Preparation method and application

Method used

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  • MOF-loaded resin composite adsorbent as well as preparation method and application thereof
  • MOF-loaded resin composite adsorbent as well as preparation method and application thereof
  • MOF-loaded resin composite adsorbent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Preparation of MOF-loaded resin adsorbent 1-D201-ZIF-67

[0044] (1) Weigh 5g of dimethylimidazole and place it in a beaker, add 30ml of water to fully dissolve, and obtain solution A;

[0045] (2) Weigh 5g of cobalt nitrate hexahydrate and place it in a beaker, add 30ml of water to fully dissolve, and obtain solution B;

[0046] (3) Heat the water bath to 85°C, and place the beaker containing solution A in the water bath to heat. Weigh 2g of D201 resin and add it to solution A, and stir (magnet speed is 80r / min), take out the beaker after 10min, pour out the solution in the beaker and collect it.

[0047] (4) Add solution B to the beaker where the resin treated in step (3) is located, heat the beaker in a water bath, and stir (magnet speed is 80r / min), take out the beaker after 10 minutes, and pour it out into the beaker The solution is collected, and the solution recovered in step (3) is added to a resin beaker.

[0048] (5) Step (3) and step (4) are car...

Embodiment 2

[0052] Example 2: Preparation of MOF-loaded resin adsorbent 2-D201-ZIF-67

[0053] The basic structure of the MOF resin composite adsorbent prepared in this example is the same as that described in Example 1, and the steps in the synthesis method are changed. The specific method is as follows:

[0054] (1) Weigh 5g of cobalt nitrate hexahydrate and place it in a beaker, add 30ml of water to fully dissolve, and obtain solution A;

[0055] (2) Weigh 5g of dimethylimidazole and place it in a beaker, add 30ml of water to fully dissolve, and obtain solution B;

[0056] (3) Heat the water bath to 85°C, and place the beaker containing solution A in the water bath to heat. Weigh 2g of D201 resin and add it to solution A, and stir (magnet speed is 80r / min), take out the beaker after 10min, pour out the solution in the beaker and collect it.

[0057] (4) Add solution B to the beaker where the resin treated in step (3) is located, heat the beaker in a water bath, and stir (magnet speed...

Embodiment 3

[0062] Example 3: Preparation of MOF-loaded resin adsorbent 3-D201-ZIF-67

[0063] The MOF resin composite adsorbent prepared in this example has the same reactants as those described in Example 1, and the reaction temperature is changed. The specific method is as follows:

[0064] (1) Weigh 5g of dimethylimidazole and place it in a beaker, add 30ml of water to fully dissolve, and obtain solution A;

[0065] (2) Weigh 5g of cobalt nitrate hexahydrate and place it in a beaker, add 30ml of water to fully dissolve, and obtain solution B;

[0066] (3) Heat the water bath to 50° C., place the beaker containing solution A in the water bath and heat it. Weigh 2g of D201 resin and add it to solution A, and stir (magnet speed is 80r / min), take out the beaker after 10min, pour out the solution in the beaker and collect it.

[0067] (4) Add solution B to the beaker where the resin treated in step (3) is located, heat the beaker in a water bath, and stir (magnet speed is 80r / min), take ...

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Abstract

The invention discloses a metal organic framework (MOF)-loaded resin composite adsorbent as well as a preparation method and application thereof. The composite adsorbent includes resin and MOF particles, wherein the resin is resin containing an amino group, and the MOF particles are bound to the adsorption resin through a ligand. The MOF-loaded resin composite adsorbent is obtained by the adoptingthe MOF in-situ generation method, and the method specially comprises the following steps: adding the organic ligand and the macroporous resin into an aqueous solution to obtain a resin material withthe immobilized organic ligand, performing filtering to obtain the resin material, and adding the resin material and a metal salt compound into water to obtain the MOF-loaded resin composite adsorbent. The method provided by the invention combines the ion exchange and adsorption performance of the resin with the MOF material supported in the resin pores, and the composite adsorbent has the advantages of high stability, a good phosphorus removal effect at low concentration, no influence of interference ions, easy separation from water and the like, and can be reused effectively.

Description

technical field [0001] The invention relates to an inorganic-organic composite material, in particular to a composite adsorbent loaded with MOF resin, a preparation method and an application. Background technique [0002] Phosphate is one of the most widely used chemicals. A large amount of phosphate is discharged into the environment, causing eutrophication of water bodies, water quality imbalance, and affecting aquatic ecological balance. In the past, the phosphorus treatment of water bodies first targeted at the phosphorus element in the water body to reduce its concentration, but the phosphorus content in the actual water body was usually not high. The current treatment of phosphorus in water, whether biological, physical or chemical, is facing the problem of low-concentration phosphorus control. For example, although there are many kinds of adsorbents for phosphorus removal and they have high saturation adsorption capacity, the adsorption for low concentration phosphor...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F101/10
CPCB01J20/261B01J20/226C02F1/288C02F2101/105
Inventor 杨维本杨朕朱炜黄晓华张少鹏张毅
Owner NANJING NORMAL UNIVERSITY
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