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Method for removing aromatic sulfonic acid anions in aqueous solution and aromatic sulfonic acid anion CMOFs material

A technology of aromatic sulfonic acid and aromatic sulfonate, which is applied in the fields of essential oils/fragrances, chemical instruments and methods, water pollutants, etc., and can solve problems such as difficulty in natural biochemical degradation of aromatic sulfonate anions, toxicity, and influence on enzyme activity , to achieve good removal efficiency, mild response conditions, and simple characterization

Active Publication Date: 2021-03-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, aromatic sulfonate anions, as derivatives of benzene compounds, also have certain toxicity and are relatively harmful to the human body. They can cause serious eye irritation, skin and respiratory irritation, affect enzyme activity, and disrupt human physiology. metabolism
In addition, if the waste liquid containing aromatic sulfonate anions is directly discharged, the natural biochemical degradation of aromatic sulfonate anions is difficult, which will cause water pollution, and aromatic sulfonate anions can also exchange reactions with ions in the soil , change the physical and chemical properties of the soil, and affect the normal physical and chemical functions of the soil
At present, there is no related report on the removal of aromatic sulfonate anions by constructing CMOFs

Method used

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  • Method for removing aromatic sulfonic acid anions in aqueous solution and aromatic sulfonic acid anion CMOFs material
  • Method for removing aromatic sulfonic acid anions in aqueous solution and aromatic sulfonic acid anion CMOFs material
  • Method for removing aromatic sulfonic acid anions in aqueous solution and aromatic sulfonic acid anion CMOFs material

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for removing aromatic sulfonate anions in an aqueous solution, the method steps are as follows:

[0040] (1) Pretreatment of laboratory waste liquid containing aromatic sulfonate anions: add nitric acid and hydrogen dropwise to chemical waste liquid containing aromatic sulfonate anions, chloride ions, bromide ions, sulfate radicals, nitrate radicals and perchlorate radicals Sodium oxide solution, adjust the pH of the system to 5-7, and then filter to obtain a clear waste liquid without solid impurities; wherein, the aromatic sulfonate is 4-methylbenzenesulfonic acid sodium salt (NaTS);

[0041] (2) ATRZ (0.492g, 3.0mmol) solution 10mL of H 2 O, to obtain ATRZ aqueous solution, the inorganic metal copper salt (3.0mmol) was dissolved in 10mL of H 2 In O, obtain inorganic metal salt solution; Wherein, described inorganic metal salt is Cu(NO 3 ) 2 ;

[0042] (3) Add ATRZ aqueous solution and inorganic metal salt solution sequentially to 5 mL of the waste liquid...

Embodiment 2

[0048] In this embodiment, the aromatic sulfonate is sodium 2-iodobenzenesulfonate (NaIBS), and the inorganic metal salt is CuSO 4 , the CMOFs crystal is MOF (CuIBS), and the rest are the same as in Example 1.

[0049] The removal efficiency of aromatic sulfonate anions is 76.19%.

[0050] The crystal structure parameters of the MOF (CuIBS) are shown in Table 1.

[0051] After standing for different times, the infrared spectrum results and powder XRD results of the CMOFs crystals showed that there were only sulphonate anions in the crystals, but no inorganic anions, indicating that the method had a strong effect on aromatic sulfonate anions. selectivity.

[0052] The coordination environment diagram of the CMOFs crystal is as follows image 3 As shown, the packing diagram of the CMOFs crystal is as follows Figure 4 shown.

Embodiment 3

[0054] In the present embodiment, the aromatic sulfonate is 4-aminobenzenesulfonic acid sodium salt (NaABS), and the inorganic metal salt is Cu(BF 4 ) 2 , the CMOFs crystal is MOF (CuABS), and the rest are the same as in Example 1.

[0055] The removal efficiency of aromatic sulfonate anions is 78.31%.

[0056] The crystal structure parameters of the MOF (CuABS) are shown in Table 1.

[0057] After standing for different times, the infrared spectrum results and powder XRD results of the CMOFs crystals showed that there were only sulphonate anions in the crystals, but no inorganic anions, indicating that the method had a strong effect on aromatic sulfonate anions. selectivity.

[0058] The coordination environment diagram of the CMOFs crystal is as follows image 3 As shown, the packing diagram of the CMOFs crystal is as follows Figure 4 shown.

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Abstract

The invention relates to a method for removing aromatic sulfonic acid anions in an aqueous solution and an aromatic sulfonic acid anion CMOFs material, and belongs to the field of sewage treatment. According to the method, an ATRZ aqueous solution and an inorganic metal salt aqueous solution are dropwise added into a sewage solution containing aromatic sulfonate anions, and high-crystallinity water-insoluble CMOFs crystals taking the aromatic sulfonate anions as balanced anions are formed by virtue of coordination interaction, so that the aromatic sulfonate anions in the aqueous solution are effectively removed. The method is easy to operate and mild in condition, is suitable for aromatic sulfonate anions containing different groups, and has high selectivity.

Description

technical field [0001] The invention relates to a method for removing aromatic sulfonic acid anions in aqueous solution and aromatic sulfonic acid anion CMOFs materials, belonging to the field of sewage treatment. Background technique [0002] Aromatic sulfonates are mainly a class of organic aromatic compounds based on benzenesulfonic acid (sodium, potassium) salts and their homologues. Since the introduction of different functional groups can further expand its structure and adjust its properties, most of the common aromatic sulfonates have different modification groups (such as 4-methylbenzenesulfonic acid sodium salt, 2-iodobenzenesulfonic acid sodium salt Wait). Existing a large number of relevant literatures show that the modified aromatic sulfonic acid anion has unique properties, which makes aromatic sulfonic acid salts widely used in medicine, catalysis, pesticides, nonlinear optical materials, dyes (such as methyl Orange and Acid Red88), energetic materials, and ...

Claims

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Application Information

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IPC IPC(8): C02F1/66C02F1/00C02F1/54C11B9/00C08G83/00C02F101/30
CPCC02F1/66C02F1/001C02F1/54C11B9/00C08G83/008C02F2101/40
Inventor 李生华彭盼盼庞思平弥永胜赵超峰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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