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Ion exchange agent based on modified resin and preparation method of ion exchange agent

A technology of ion exchangers and modified resins, which is applied in ion exchange water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of low reusability, inconvenient operation, and low efficiency, and achieve Solve environmental pollution problems and production safety problems, simple operation, large adsorption effect

Active Publication Date: 2016-10-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing treatment methods have their own shortcomings, such as inconvenient operation, high cost, low efficiency, low reusability, etc.

Method used

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  • Ion exchange agent based on modified resin and preparation method of ion exchange agent
  • Ion exchange agent based on modified resin and preparation method of ion exchange agent
  • Ion exchange agent based on modified resin and preparation method of ion exchange agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The preparation of ion exchanger 1 based on modified resin comprises the following steps:

[0028] (1) Dissolve 2 g of Amberlite XAD-4 resin in 10 mL of octanol, then add 30 mL of dichloromethane, add 5 g of anhydrous zinc chloride in batches under stirring, and react at 40 °C for 10 h; After washing with acetone, hydrochloric acid, and distilled water, dry at 60°C for 8 h to obtain the chloromethylated product;

[0029] (2) Soak 2 g of the chloromethylated product obtained in step (1) in 30 mL of dichloroethane (DCE) for 2 h, then add 2 g of 5-sulfosalicylic acid, and react at 70 °C for 24 h, respectively washed with acetone, hydrochloric acid, and distilled water, and dried at 60°C for 8 h to obtain ion exchanger 1; elemental analysis, theoretical value: C, 57.49; H, 4.19; S, 9.58%; experimental value: C, 73.14; H, 5.77; S, 5.27%.

Embodiment 2

[0031] The preparation of ion exchanger 2 based on modified resin comprises the following steps:

[0032] (1) Dissolve 5 g of Amberlite XAD-4 resin in 20 mL of octanol, then add 30 mL of chloromethyl methyl ether, add 10 g of anhydrous aluminum chloride in batches under stirring, and react at 90 °C for 10 h After washing with acetone, hydrochloric acid, and distilled water in sequence, dry at 60 °C for 8 h to obtain the chloromethylated product;

[0033] (2) Soak 1 g of the chloromethylated product obtained in step (1) in 30 mL of nitrobenzene for 2 h, then add 3 g of 5-sulfosalicylic acid, react at 100 °C for 72 h, respectively After washing with acetone, hydrochloric acid, and distilled water in sequence, dry at 60 °C for 8 h to obtain ion exchanger 2 (Amberlite XAD-4[5-sulfosalicylicacid]) based on modified resin; elemental analysis, theoretical value: C, 57.49 ; H, 4.19; S, 9.58%; Experimental values: C, 61.13; H, 4.56; S, 8.58%.

[0034] Adopt Fourier transform infrared...

Embodiment 3

[0036] The preparation of ion exchanger 3 based on modified resin comprises the following steps:

[0037] (1) Dissolve 4 g of Amberlite XAD-4 resin in 10 mL of octanol, then add 30 mL of dichloromethane, add 5 g of anhydrous aluminum trichloride in batches under stirring, and react at 40 °C for 10 h, After washing with acetone, hydrochloric acid, and distilled water in sequence, dry at 60 °C for 8 h to obtain the chloromethylated product;

[0038](2) Soak 3 g of the chloromethylated product obtained in step (1) in 30 mL of N-N-dimethylformamide (DMF) for 2 h, then add 5 g of 5-sulfosalicylic acid, at 100 Reaction at ℃ for 72 h, followed by washing with acetone, hydrochloric acid and distilled water, and drying at 60 ℃ for 8 h to obtain ion exchanger 3 based on modified resin; elemental analysis, theoretical value: C, 57.49; H, 4.19 ; S, 9.58%; Experimental value: C, 65.99; H, 5.05; S, 7.24%.

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Abstract

The invention discloses an ion exchange agent based on modified resin. The ion exchange agent is prepared by using 5-sulfosalicylic acid to modify Amberlite XAD-4 resin. The ion exchange agent can be used to adsorb Co2+ and Mn2+ in PTA wastewater, and removal rate of the same is up to higher than 90%; the ion exchange agent can realize desorption after being soaked by hydrochloric acid, namely having high renewability.

Description

technical field [0001] The invention belongs to the field of environmentally friendly new materials, and in particular relates to an ion exchanger based on a modified resin and a preparation method thereof. Background technique [0002] Purified terephthalic acid (PTA) is widely used as an important raw material for the production of PET bottles, polyester fibers, polyester films, pesticides, dyes, etc. As of the end of April 2014, China's PTA industrial production capacity has reached 36 million tons per year. The PTA production process includes two units of oxidation and hydrofining. The transition metal cobalt and manganese are used as catalysts in the oxidation unit, so the PTA wastewater contains a large amount of soluble aromatic acid by-products and Co 2+ , Mn 2+ Metal ion. The PTA refining unit needs to use a large amount of deionized water as a solvent. The production of 1 ton of PTA will generate 3-4 tons of wastewater. China's PTA production industry produces ...

Claims

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Application Information

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IPC IPC(8): C02F1/42C02F1/62
CPCC02F1/42
Inventor 鲍晓军白正帅陈志伟岳源源
Owner FUZHOU UNIV
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