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Application of Porous Cationic Polymers in Removing Dyes or Heavy Metals from Wastewater

A cationic polymer and heavy metal technology, applied in animal processing wastewater treatment, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of expensive monomers, unfavorable water treatment applications, instability, etc., to achieve Strong modifiability, stable structure, and high charge density

Active Publication Date: 2022-07-05
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the monomers used in the preparation of MOF materials in this invention are expensive, they are usually unstable in water bodies, which is not conducive to industrial water treatment applications

Method used

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  • Application of Porous Cationic Polymers in Removing Dyes or Heavy Metals from Wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Synthesis of Porous Cationic Polymer PIm-DCX

[0037] 2-Phenylimidazole (PIm) (1 mmol) and α,α'-dichloro-p-xylene (DCX) (1 mmol) in a molar ratio of 1:1 were dissolved in 10 mL of 1,2-dichloroethane solution, Add anhydrous FeCl to the above solution 3 (4 times the molar amount of monomer) (4 mmol), the mixture was stirred and reacted at a temperature of 80° C. for 24 h. After the reaction was completed, it was cooled to room temperature, and the precipitate was collected by filtration and washed with methanol until the washing liquid was clear, and then extracted with methanol for Soxhlet for 24 h. The purified solid product was vacuum-dried at 80 °C for 24 h to obtain a brown powdery solid porous cationic polymer PIm-DCX.

[0038] The structural formula of the porous cationic polymer PIm-DCX is as follows:

[0039]

[0040] Scanning electron microscopy of porous cationic polymer PIm-DCX as figure 1 As shown, it is an amorphous structure, which is composed of a l...

Embodiment 2

[0044] Synthesis of Porous Cationic Polymer PIm-BCMB

[0045] 2-phenylimidazole (PIm) (1 mmol) and biphenyl dichlorobenzyl (BCMB) (1 mmol) in a molar ratio of 1:1 were dissolved in 10 mL of 1,2-dichloroethane solution, and to the above solution was added Anhydrous FeCl 3 (4 times the molar amount of monomer) (4 mmol), the mixture was stirred and reacted at a temperature of 90° C. for 22 h. After the reaction was completed, it was cooled to room temperature, and the precipitate was collected by filtration and washed with methanol until the washing liquid was clear, and then extracted with methanol for Soxhlet for 24 h. The purified solid product was vacuum-dried at 80 °C for 24 h to obtain a brown powdery solid porous cationic polymer PIm-BCMB.

[0046] The structural formula of the porous cationic polymer PIm-BCMB is as follows:

[0047]

[0048] The infrared spectrum of the porous cationic polymer PIm-BCMB is shown in figure 2 shown at 1656 and 1567cm -1 The two abso...

Embodiment 3

[0051] Synthesis of Porous Cationic Polymer PPY-DCX

[0052] 2-Phenylpyridine (PPY) (1 mmol) and α,α'-dichloro-p-xylene (DCX) (1 mmol) in a molar ratio of 1:1 were dissolved in 10 mL of 1,2-dichloroethane solution, Add anhydrous FeCl to the above solution 3 (4 times the molar amount of monomer) (4 mmol), the mixture was stirred and reacted at a temperature of 80° C. for 24 h. After the reaction was completed, it was cooled to room temperature, and the precipitate was collected by filtration and washed with methanol until the washing liquid was clear, and then extracted with methanol for Soxhlet for 24 h. The purified solid product was vacuum-dried at 80 °C for 24 h to obtain a brown powdery solid porous cationic polymer PPY-DCX.

[0053] The structural formula of the porous cationic polymer PPY-DCX is as follows:

[0054]

[0055] Scanning electron microscopy of porous cationic polymer PPY-DCX as figure 1 As shown, it is an amorphous structure, which is composed of a la...

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Abstract

The invention discloses the application of a porous cationic polymer in removing dyes or heavy metals in waste water. / L, the concentration of the porous cationic polymer in the wastewater is 0.5-1.5 mg / mL, the heavy metal acid ions in the wastewater are dichromate, permanganate, and arsenate, and the dye in the wastewater is methyl orange , methylene blue, rhodamine B, Congo red, chrome black T. The porous cationic polymer of the invention has high surface active site density, can quickly and efficiently remove dyes and heavy metal ions in wastewater, and is a high-efficiency and cheap adsorbent for cooperatively removing dyes and heavy metals in industrial wastewater.

Description

technical field [0001] The invention belongs to the technical field of functional materials and environmental treatment, in particular to the application of a porous cationic polymer in removing dyes or heavy metals in wastewater, and is suitable for dyes and heavy metal acid salts in wastewater from industries such as leather, textile, papermaking, electroplating and the like. remove. Background technique [0002] With the rapid economic development, smelting, electroplating, medicine, leather, dyes and other enterprises discharge a large amount of industrial wastewater containing dyes and heavy metal ions every year. serious health hazards. Since dyes and heavy metal pollutants are difficult to decompose and destroy, they will cause permanent pollution once they are discharged into the environment. The main methods for removing heavy metal ions include chemical precipitation, electrochemical, reverse osmosis, ion exchange, membrane separation, etc. Among them, chemical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28B01J20/26B01J20/28B01J20/30C02F101/10C02F101/20C02F101/22C02F101/30C02F101/34C02F101/36C02F101/38C02F103/24
CPCC02F1/285B01J20/264B01J20/28064B01J20/28066B01J20/28073B01J20/28076B01J20/28083C02F2101/22C02F2101/206C02F2101/103C02F2101/38C02F2101/36C02F2101/34C02F2101/308C02F2101/40C02F2103/24
Inventor 胡军赵开庆孔令凯潘冯弘康吴若雨刘洪来
Owner EAST CHINA UNIV OF SCI & TECH
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