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A kind of porous microsphere foam adsorption material and preparation method thereof

A foam adsorption, porous microsphere technology, applied in chemical instruments and methods, other chemical processes, alkali metal compounds, etc., can solve the problems of environmental threats, poor circulation, poor adsorption effect, etc., to achieve the effect of strengthening mass transfer kinetics

Active Publication Date: 2022-05-27
SICHUAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Low concentrations of pollutants have high mass transfer resistance, and the treated solution still contains some pollutants, which still pose a serious threat to the environment
Therefore, the design and preparation of low-concentration pollutant adsorbents are significant and challenging.
[0003] Tannin is a kind of natural polyphenol compound, which widely exists in plants. The multiple ortho phenolic hydroxyl groups of tannin enable it to undergo electrostatic bonding and complexation reactions with various metal ions, and the reaction is rapid. The tannins are reacted with aldehyde compounds to form tannin resins, or polymer materials are used as supporting materials, and tannins are solidified on these polymer materials to make cured tannin adsorption materials, but they are commonly found in low-concentration pollutants. When adsorbing, the adsorption effect is poor and the cycle is poor.

Method used

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  • A kind of porous microsphere foam adsorption material and preparation method thereof
  • A kind of porous microsphere foam adsorption material and preparation method thereof
  • A kind of porous microsphere foam adsorption material and preparation method thereof

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preparation example Construction

[0020] A preparation method of a porous microsphere foam adsorption material provided by the embodiment of the present invention comprises the following steps:

[0021] Base material: under the condition of medium-speed stirring, add the cross-linking agent and catalyst and stir for 10-15 minutes to solidify the tannin solution, then add the foaming agent, and make the foam-like material after high-speed stirring. The base material is prepared by drying the material at 75-95° C. for 24-30 h.

[0022] Porous microsphere foam adsorption material: grind the base material into powder, then disperse it in a metal ion solution to prepare a mixed solution, stir the mixed solution for 25-35min and adjust its pH=4, and then adjust the pH of the mixed solution to 4. The mixed solution is stirred, suction filtered and dried to obtain a porous microsphere foam adsorption material.

[0023] Among them, tannins are a kind of natural polyphenols. In their structure, there are a large number...

Embodiment 1

[0035] A preparation method of porous microsphere foam adsorption material, comprising the following steps:

[0036] Base material: Disperse 20g of bayberry tannin in 20mL of distilled water and stir for 30min, then under the condition of 500rpm, add urotropine and p-toluenesulfonic acid and stir for 10min to solidify, then add Tween 80, stir under the condition of 1200rpm , until the volume no longer increases, then stop stirring to obtain the foamed cured tannin, and then dry the foamed cured tannin at 85°C for 24 hours to obtain the base material;

[0037] Porous microsphere foam adsorption material: 0.2546g FeCl 3 ·6H 2O was dissolved in 50 mL of distilled water to obtain a metal ion solution, the base material was ground into powder, 1 g of the powdery base material was dispersed in the metal ion solution to obtain a mixed solution, and the mixed solution was stirred for 30 min and adjusted to pH=4, Then, the mixed solution was stirred for 3 hours, filtered with suction...

Embodiment 2

[0039] A preparation method of porous microsphere foam adsorption material, comprising the following steps:

[0040] Base material: Disperse 20g of bayberry tannin in 24mL of distilled water and stir for 25min, then under the condition of 400rpm, add urotropine and p-toluenesulfonic acid and stir for 15min to solidify, then add Tween 80, stir under the condition of 1200rpm , until the volume no longer increases, stop stirring to obtain foamy cured tannins, and then dry the foamy cured tannins at 75°C for 22 hours to obtain the base material;

[0041] Porous microsphere foam adsorption material: 0.2546g FeCl 3 ·6H 2 O was dissolved in 40 mL of distilled water to prepare a metal ion solution, the base material was ground into powder, 1 g of the powdery base material was dispersed in the metal ion solution to obtain a mixed solution, and the mixed solution was stirred for 25 min and adjusted to pH=4, Then, the mixed solution was stirred for 3 hours, filtered with suction, and d...

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Abstract

The invention provides a porous microsphere foam adsorption material and a preparation method thereof, belonging to the technical field of adsorption materials. A method for preparing a porous microsphere foam adsorption material, comprising the following steps: base material: under the condition of stirring at a medium speed, add a crosslinking agent and a catalyst to the tannin solution and stir to solidify, then add a foaming agent, and stir at a high speed Finally, the foam material is obtained, and then the base material is obtained by drying the foam material; the porous microsphere foam adsorption material: the base material is ground into powder, and then dispersed in the metal ion solution to obtain a mixed solution, and the mixed solution After stirring, the pH is adjusted to 4, and then the mixed solution is stirred, suction filtered and dried to prepare a porous microsphere foam adsorption material. The method is simple, and the porous microsphere foam adsorption material has a high adsorption rate for adsorbing low-concentration pollutants. A porous microsphere foam adsorption material has good adsorption effect when adsorbing low-concentration pollutants.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, in particular to a porous microsphere foam adsorption material and a preparation method thereof. Background technique [0002] Adsorption is a commonly used method for treating pollutants in water. The adsorption process is convenient, easy to operate, and simple to design. It has been applied to the removal of pollutants. Due to the influence of human activities, there are many low-concentration pollutants in natural water bodies. Low-concentration pollutants have higher mass transfer resistance, and the treated solution still contains some pollutants, which still poses a serious threat to the environment. Therefore, the design and preparation of low-concentration pollutant adsorbents are of great significance and challenges. [0003] Tannin is a natural polyphenolic compound, which is widely present in plants. Tannin has multiple ortho-phenolic hydroxyl groups, which enable it to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
CPCB01J20/262B01J20/0229B01J20/28016B01J20/28045B01J20/28054
Inventor 毛卉郝柏村肖萌陈晨庞孟婷彭彧
Owner SICHUAN NORMAL UNIV