Application of porous covalent triazine polymer for removing aromatic compound from water

A technology of aromatic compounds and covalent triazines, applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc., can solve problems such as difficult desorption, troublesome application and operation of adsorbents, and decreased adsorption efficiency , to achieve good adsorption effect, good adsorption reversibility, uniform pore structure

Inactive Publication Date: 2011-08-17
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these adsorbents have certain limitations. The first three adsorbents have problems such as difficult desorption. The adsorption capacity of talc can only be significantly improved after roasting, and once its structure is restored, the adsorption efficiency will decline. Burn and use
Therefore, this kind of adsorbent is more troublesome in application operation.

Method used

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  • Application of porous covalent triazine polymer for removing aromatic compound from water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The porous covalent triazine polymer synthesized above was used as an adsorbent to treat slightly polluted water containing benzene. The adsorption experiment was carried out in a 40mL transparent glass bottle equipped with a polytetrafluoroethylene gasket. The adsorption experiment adopted the traditional shaking flask method. In order to reduce the accidental error of the experiment, two sets of parallel samples were set up for the adsorption experiment. The mass ratio of adsorbent to slightly polluted water is 1:2000, the initial concentration of benzene is 2-40mg / L, pH=5.8-6.4, the temperature is set at room temperature, and the adsorption equilibrium time is 24h. The removal rate of benzene is 38%-70%.

[0032] The desorption method used in the experiment: static settling or centrifugation to remove most of the supernatant in the reaction vessel, then add an equal amount of distilled water for desorption, and react for 20-30 hours.

Embodiment 2

[0034] The porous covalent triazine polymer synthesized above was used as an adsorbent to treat slightly polluted water containing naphthalene. Adsorption conditions are the same as in Example 1. The mass ratio of the experimental adsorbent to slightly polluted water is 1:2000, the initial concentration of naphthalene is 1.4-27mg / L, pH=5.8-6.4, the temperature is set at room temperature, the adsorption time is 24h, and the removal rate of naphthalene is 96%~ 98%.

Embodiment 3

[0036] Condition is the same as embodiment 1. The temperature is set at room temperature, the initial concentration of phenol is 2-60mg / L, and its removal rate is 30%-61%. The initial concentration of naphthol is 18-90mg / L, and its removal rate is 92%-99%.

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Abstract

The invention discloses an application of porous covalent triazine polymer for removing aromatic compound from water. A method for removing the aromatic compound from the water is as follows: at the temperature of 10-30DEG C, the porous covalent triazine polymer is put in aromatic pollutant-containing water body with pH value of 5.8-6.4 for adsorption for 20-30h, the concentration of aromatic compound pollutant in the water body is 0.5-90mg / L and the mass ratio of the porous covalent triazine polymer to the aromatic pollutant-containing water is 1:1700-2300. The porous covalent triazine polymer has excellent adsorption effect to the aromatic compound.

Description

technical field [0001] The invention belongs to the technical field of porous polymers and the technical scope of water treatment, and specifically relates to the application of polymers containing porous covalent triazine functional groups to remove aromatic compounds in water bodies. Background technique [0002] With the development of the economy and the rapid growth of resources in human society, a large amount of wastewater containing aromatic compounds is produced in the production, processing and use of daily necessities for human beings. For example, the wastewater produced by various industries such as chemical industry, pesticide, fuel and medicine contains aromatic compounds, which are discharged into water bodies and cause water pollution. These aromatic compounds are widely used, are flammable and volatile, and are easy to leak into the environment, endangering ecological safety and human health. Because the toxicity of aromatic compounds is harmful to the hum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F1/28
Inventor 许昭怡刘景亮郑寿荣万海勤万玉秋宗恩敏魏丹
Owner NANJING UNIV
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