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A MOFs material for adsorbing phosphate ions

A ZIF-8, high-efficiency technology, applied in the field of MOFs materials

Active Publication Date: 2021-06-15
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, MOFs materials are mostly used for the adsorption and removal of dyes or heavy metal ions. There are no articles or patents on the use of MOFs materials for phosphorus removal. This patent successfully uses MOFs materials for phosphorus removal in water bodies.

Method used

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  • A MOFs material for adsorbing phosphate ions
  • A MOFs material for adsorbing phosphate ions
  • A MOFs material for adsorbing phosphate ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: In lake water with a concentration of 1.1 mg / L and an initial pH of 6, 0.15 g of ZIF-8 material was added per 1 L, and the phosphorus removal rate was measured to be 98.9% after 1 min of reaction.

Embodiment 2

[0018] Example 2: 0.55 g of ZIF-8 material was added per 1 L of wastewater from a sewage treatment plant with a concentration of 12.8 mg / L and an initial pH of 10. After 30 minutes of reaction, the phosphorus removal rate was measured to be 93.4%.

Embodiment 3

[0019] Example 3: In industrial wastewater with a concentration of 29.1 mg / L and an initial pH of 3, 1.00 g of ZIF-8 material was added per 1 L, and the phosphorus removal rate was measured to be 90.5% after 100 min of reaction.

[0020] 2. Example of MOF-5 removing phosphorus in water.

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Abstract

The invention relates to a MOFs material for adsorbing phosphate ions. The MOFs material is used as an adsorbent for the adsorption of phosphate ions in aqueous solution, and exhibits obvious adsorption properties for phosphate ions. These kinds of MOFs materials were added to phosphorus-containing waters with different concentrations and pHs, and the removal rate of phosphorus could reach 90%-99% after stirring for 1-120 minutes, and the treated MOFs materials did not have the phenomenon of decomposing phosphorus. , will not cause secondary pollution to the environment. These kinds of MOFs materials have the advantages of large specific surface area, high adsorption capacity, high phosphorus removal efficiency, small useful amount, simplicity, safety, high efficiency and low cost. The invention relates to the application of dephosphorization of industrial waste water, lake water, tail water of sewage treatment plants and aquaculture waste water.

Description

technical field [0001] The invention belongs to the application field of environment-friendly materials, and relates to a MOFs material used for adsorbing phosphate ions. Background technique [0002] In recent years, with the rapid increase of population and rapid industrial growth, environmental pollution has become increasingly serious. Excessive phosphorus in water will accelerate the eutrophication of the water body. Eutrophication refers to the large amount of nutrients such as nitrogen and phosphorus required by organisms entering lakes, estuaries, and inland seas, causing algal blooms, a large drop in dissolved oxygen in water bodies, and water quality deterioration. Phenomenon. This phenomenon is more serious in our country and has brought great harm to industry, aquaculture, agriculture and tourism. Phosphate is considered to be one of the key factors for the excessive growth of aquatic organisms, and has a greater impact on the existence of aquatic organisms suc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22C02F1/28C02F1/58
Inventor 王家强李俊杰段德良闫智英郭云龙王敏
Owner YUNNAN UNIV
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