阅读说明：本技术 一种磁性碳球负载四氧化三钴催化剂的制备方法及应用 (Preparation method and application of magnetic carbon sphere loaded cobaltosic oxide catalyst ) 是由 费会 王纯 黄雪临 李子洋 于 2019-09-20 设计创作，主要内容包括：本发明公开一种磁性碳球负载四氧化三钴催化剂的制备方法及应用,所述磁性碳球负载四氧化三钴催化剂的制备方法包括：向含碳化合物溶液中加入铁盐溶液,搅拌形成混合液；将所述混合液加热至80～160℃进行水热反应6～20h,然后固液分离并收集固体产物,对所述固体产物进行洗涤和干燥,得磁性碳球；向钴盐溶液中加入所述磁性碳球后分散均匀,再加入氨水溶液,搅拌混合后加热至120～180℃进行水热反应8～20h,然后固液分离并收集固体产物,对所述固体产物进行洗涤和干燥,得磁性碳球负载四氧化三钴催化剂。本发明制得的磁性碳球负载四氧化三钴催化剂,在催化活化过硫酸盐降解苯胺废水时具有较高的催化性能,且易于回收。(The invention discloses a preparation method and application of a magnetic carbon sphere supported cobaltosic oxide catalyst, wherein the preparation method of the magnetic carbon sphere supported cobaltosic oxide catalyst comprises the following steps: adding an iron salt solution into the carbon-containing compound solution, and stirring to form a mixed solution; heating the mixed solution to 80-160 ℃ for carrying out hydrothermal reaction for 6-20 h, then carrying out solid-liquid separation and collecting a solid product, and washing and drying the solid product to obtain magnetic carbon balls; and adding the magnetic carbon spheres into a cobalt salt solution, uniformly dispersing, adding an ammonia water solution, stirring, mixing, heating to 120-180 ℃, carrying out hydrothermal reaction for 8-20 h, carrying out solid-liquid separation, collecting a solid product, washing and drying the solid product, and thus obtaining the magnetic carbon sphere supported cobaltosic oxide catalyst. The magnetic carbon sphere supported cobaltosic oxide catalyst prepared by the invention has higher catalytic performance when persulfate is catalytically activated to degrade aniline wastewater, and is easy to recover.)

1. A preparation method of a magnetic carbon sphere loaded cobaltosic oxide catalyst is characterized by comprising the following steps:

adding an iron salt solution into the carbon-containing compound solution, and stirring to form a mixed solution;

Heating the mixed solution to 80-160 ℃ for carrying out hydrothermal reaction for 6-20 h, then carrying out solid-liquid separation and collecting a solid product, and washing and drying the solid product to obtain magnetic carbon balls;

And adding the magnetic carbon spheres into a cobalt salt solution, uniformly dispersing, adding an ammonia water solution, stirring, mixing, heating to 120-180 ℃, carrying out hydrothermal reaction for 8-20 h, carrying out solid-liquid separation, collecting a solid product, washing and drying the solid product, and thus obtaining the magnetic carbon sphere supported cobaltosic oxide catalyst.

2. the method of preparing a magnetic carbon sphere-supported tricobalt tetroxide catalyst of claim 1, wherein the carbon compound-containing solution comprises at least one of a glucose solution, a fructose solution, and a cellulose solution.

3. The method of claim 1, wherein the iron salt solution comprises FeCl₃Solution, Fe (NO)₃)₃Solution and Fe₂(SO₄)₃At least one of the solutions.

4. the method for preparing a magnetic carbon sphere-supported cobaltosic oxide catalyst as claimed in any one of claims 1 to 3, wherein the step of adding an iron salt solution to a carbon compound-containing solution and stirring to form a mixed solution comprises:

The molar concentration of the carbon-containing compound in the carbon-containing compound solution is 0.01-0.2M;

the molar concentration of iron ions in the iron salt solution is 0.01-0.1M;

The volume ratio of the carbon-containing compound solution to the iron salt solution is 1: (0.01-1).

5. The method of claim 1, wherein the cobalt salt solution comprises CoCl₂solution, Co (NO)₃)₂Solution and Co (C)₂H₃O₂)₂At least one of the solutions.

6. The preparation method of the magnetic carbon sphere supported cobaltosic oxide catalyst as claimed in claim 1 or 5, wherein the step of adding the magnetic carbon spheres into a cobalt salt solution, then uniformly dispersing, then adding an ammonia solution, stirring and mixing, then heating to 120-180 ℃ for hydrothermal reaction for 8-20 h, then performing solid-liquid separation, collecting a solid product, washing and drying the solid product to obtain the magnetic carbon sphere supported cobaltosic oxide catalyst comprises the following steps:

The molar concentration of cobalt ions in the cobalt salt solution is 0.01-0.1M;

the addition amount of the magnetic carbon spheres is 0.1-1 g of magnetic carbon spheres added into each liter of cobalt salt solution;

The mass fraction of ammonia in the ammonia water solution is 20-35%, and the volume ratio of the cobalt salt solution to the ammonia water solution is 1: (0.35-5).

7. The method for degrading aniline wastewater is characterized by comprising the following steps of:

Adding a magnetic carbon sphere loaded cobaltosic oxide catalyst into the aniline wastewater, then adding persulfate, stirring, heating to 30-50 ℃, and carrying out oscillation reaction for 0.5-2 h to complete the degradation treatment of the aniline wastewater; wherein the magnetic carbon sphere-supported cobaltosic oxide catalyst is prepared by the method of any one of claims 1 to 6.

8. the method for degrading aniline wastewater of claim 7, wherein the persulfate comprises Na₂S₂O₈、K₂S₂O₈And KHS₂O₈At least one of (1).

9. the method for degrading the aniline wastewater according to claim 7 or 8, wherein the step of adding the magnetic carbon sphere-supported cobaltosic oxide catalyst into the aniline wastewater, then adding persulfate, stirring, heating to 30-50 ℃, carrying out oscillation reaction for 0.5-2 h, and completing the degradation treatment of the aniline wastewater comprises the following steps:

The addition amount of the magnetic carbon sphere supported cobaltosic oxide catalyst is 0.1-1 g per liter of aniline wastewater;

The addition amount of the persulfate is 0.05-0.5 g added into each liter of aniline wastewater.

10. The method for degrading the aniline wastewater according to claim 7, wherein the concentration of aniline in the aniline wastewater is 50-200 mg/L.

Technical Field

the invention relates to the technical field of sewage treatment, in particular to the technical field of aniline wastewater treatment, and specifically relates to a preparation method and application of a magnetic carbon sphere supported cobaltosic oxide catalyst.

Background

With the rapid development of socioeconomic and the increasing demand of people for quality of life, various novel organic compounds are continuously synthesized and applied to daily life of people. The novel organic compounds bring convenience to life of people, and can cause increasingly serious influence on water environment along with discharge of sewage and wastewater into natural water. Particularly, aniline wastewater is a toxic, harmful and nonbiodegradable organic pollutant, and seriously threatens the existence and development of people and organisms.

At present, the aniline wastewater treatment method comprises a physical method, a chemical method and a biological method. The physical methods include adsorption method, membrane separation technology, high-energy physical method and extraction method. The chemical methods include chemical oxidation, electrochemical method, photochemical oxidation and flocculation precipitation. The biological treatment method achieves the purpose of removal through flocculation, adsorption and degradation of biological flora. However, these treatments only transfer the contaminants, which is prone to secondary contamination and require further treatment.

the advanced oxidation technology takes active groups such as hydroxyl free radicals and the like as oxidants to decompose and mineralize various pollutants in water, has the advantages of high treatment efficiency, wide application range, mild reaction conditions, low price, environmental friendliness and the like, and is considered to be an environmental purification technology with great application potential. In recent years, advanced oxidation technology based on a sulfate radical has attracted much attention, and the technology generates a sulfate radical through catalytic activation of persulfate, has higher oxidation activity, wider application range of pH value, longer half-life period and the like, and can mineralize organic pollutants in water to a higher degree.

At present, methods for catalytically activating persulfate to generate sulfate radicals are as follows: the method comprises the following steps of thermal activation, ultraviolet activation, ultrasonic activation, transition metal activation and the like, wherein the transition metal activation can be rapidly carried out at room temperature without external energy (a heat source, a light source and the like), and the method has wide application prospect. However, the development and preparation technology of the transition metal catalyst with high activation efficiency and easy recovery is not mature at present, and the prepared transition metal catalyst has the problems that the catalytic performance needs to be improved and the recovery difficulty is large, so that the application of the technology in practical environmental engineering is limited.

disclosure of Invention

The invention mainly aims to provide a preparation method and application of a magnetic carbon sphere supported cobaltosic oxide catalyst, and aims to prepare a transition metal catalyst which is high in catalytic efficiency and easy to recover in a process of catalytically activating persulfate to degrade aniline wastewater.

in order to achieve the purpose, the invention provides a preparation method of a magnetic carbon sphere loaded cobaltosic oxide catalyst, which comprises the following steps:

Adding an iron salt solution into the carbon-containing compound solution, and stirring to form a mixed solution;

Heating the mixed solution to 80-160 ℃ for carrying out hydrothermal reaction for 6-20 h, then carrying out solid-liquid separation and collecting a solid product, and washing and drying the solid product to obtain magnetic carbon balls;

And adding the magnetic carbon spheres into a cobalt salt solution, uniformly dispersing, adding an ammonia water solution, stirring, mixing, heating to 120-180 ℃, carrying out hydrothermal reaction for 8-20 h, carrying out solid-liquid separation, collecting a solid product, washing and drying the solid product, and thus obtaining the magnetic carbon sphere supported cobaltosic oxide catalyst.

Optionally, the carbon-containing compound solution comprises at least one of a glucose solution, a fructose solution, and a cellulose solution.

Optionally, the iron salt solution comprises FeCl₃Solution, Fe (NO)₃)₃Solution and Fe₂(SO₄)₃At least one of the solutions.

Alternatively, in the step of adding an iron salt solution to the carbon compound-containing solution and stirring to form a mixed solution:

The molar concentration of the carbon-containing compound in the carbon-containing compound solution is 0.01-0.2M;

the molar concentration of iron ions in the iron salt solution is 0.01-0.1M;

The volume ratio of the carbon-containing compound solution to the iron salt solution is 1: (0.01-1).

optionally, the cobalt salt solution comprises CoCl₂Solution, Co (NO)₃)₂solution and Co (C)₂H₃O₂)₂At least one of the solutions.

Optionally, adding the magnetic carbon spheres into a cobalt salt solution, uniformly dispersing, adding an ammonia solution, stirring, mixing, heating to 120-180 ℃, performing hydrothermal reaction for 8-20 hours, performing solid-liquid separation, collecting a solid product, washing and drying the solid product, and thus obtaining the magnetic carbon sphere supported cobaltosic oxide catalyst:

The molar concentration of cobalt ions in the cobalt salt solution is 0.01-0.1M;

The addition amount of the magnetic carbon spheres is 0.1-1 g of magnetic carbon spheres added into each liter of cobalt salt solution;

The mass fraction of ammonia in the ammonia water solution is 20-35%, and the volume ratio of the cobalt salt solution to the ammonia water solution is 1: (0.35-5).

The invention also provides a method for degrading aniline wastewater, which comprises the following steps:

Adding a magnetic carbon sphere loaded cobaltosic oxide catalyst into the aniline wastewater, then adding persulfate, stirring, heating to 30-50 ℃, and carrying out oscillation reaction for 0.5-2 h to complete the degradation treatment of the aniline wastewater; wherein the magnetic carbon sphere supported cobaltosic oxide catalyst is prepared by the method.

Alternatively, the persulfate comprises Na₂S₂O₈、K₂S₂O₈and KHS₂O₈At least one of (1).

Optionally, adding a magnetic carbon sphere loaded cobaltosic oxide catalyst into the aniline wastewater, then adding persulfate, stirring, heating to 30-50 ℃, carrying out oscillation reaction for 0.5-2 h, and completing the degradation treatment of the aniline wastewater, wherein the step comprises the following steps:

The addition amount of the magnetic carbon sphere supported cobaltosic oxide catalyst is 0.1-1 g per liter of aniline wastewater;

The addition amount of the persulfate is 0.05-0.5 g added into each liter of aniline wastewater.

Optionally, the concentration of aniline in the aniline wastewater is 50-200 mg/L.

according to the technical scheme provided by the invention, a carbon-containing compound and a ferric salt solution are used as precursors, and a magnetic carbon sphere is prepared through a hydrothermal reaction; then carrying out hydrothermal reaction on the prepared magnetic carbon spheres, a cobalt salt solution and an ammonia water solution to prepare a magnetic carbon sphere loaded cobaltosic oxide catalyst, wherein the catalyst not only has the adsorption and catalytic degradation effects of the magnetic carbon spheres on organic pollutants, but also has the catalytic degradation effect of the cobaltosic oxide on the organic pollutants, so that the catalytic efficiency is high in the process of catalytically activating persulfate to degrade aniline wastewater, and the pollutant treatment is efficient; in addition, the magnetic carbon sphere loaded cobaltosic oxide catalyst also has certain magnetism, and is easy to realize recycling under an external magnetic field.

Drawings

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic flow chart of an embodiment of a preparation method of a magnetic carbon sphere-supported cobaltosic oxide catalyst provided by the invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

in order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

the method for degrading the pollution in water by the persulfate catalyzed and activated by the transition metal has the advantages of high treatment efficiency, wide application range, mild reaction conditions and the like, and has wide application prospect, but the method still has the problems that the catalytic activity of the transition metal catalyst needs to be improved, the transition metal catalyst is difficult to recover and the like. Aiming at the problems, the invention provides a preparation method of a magnetic carbon sphere supported cobaltosic oxide catalyst, wherein cobaltosic oxide is supported on the surface of a magnetic carbon sphere, cobaltosic oxide is used as a transition metal oxide, and the adsorption and catalytic degradation effects of the magnetic carbon sphere and cobaltosic oxide on organic pollutants are utilized, so that the catalytic efficiency of the transition metal catalyst in the process of catalytically activating ammonium persulfate and degrading aniline wastewater is improved. Fig. 1 shows an embodiment of a method for preparing a magnetic carbon sphere-supported cobaltosic oxide catalyst, referring to fig. 1, in this embodiment, the method for degrading aniline wastewater by using persulfate catalyzed by the magnetic carbon sphere-supported cobaltosic oxide catalyst includes the following steps:

step S10, adding an iron salt solution into the carbon-containing compound solution, and stirring to form a mixed solution;

The carbon-containing compound solution provides a carbon-containing precursor for preparing the magnetic carbon spheres, and any compound containing carbon elements can be selected for preparation, and is preferably plant fibers or polysaccharides with wide sources and low cost, such as glucose, sucrose, maltose, starch and the like. In this embodiment, the carbon-containing compound solution includes at least one of a glucose solution, a fructose solution and a cellulose solution, which may be any one of the three solutions, or a mixed solution of two or three of the three solutions, and can achieve the purpose of providing a carbon-containing precursor for preparing the magnetic carbon spheres. Further, the molar concentration of the carbon-containing compound in the carbon-containing compound solution is 0.01-0.2M, specifically, the molar concentration of the glucose solution, the fructose solution or the cellulose solution is 0.01-0.2M, and within the concentration range, the viscosity of the glucose solution, the fructose solution and the cellulose solution is suitable and easy to prepare, so that the problems that the solution viscosity is too high and is not easy to disperse due to high concentration are solved, and the problem that the amount of the solvent in the solution is too much due to low concentration, so that more waste liquid is generated in the material preparation process is solved.

The iron salt solution provides an iron-containing source for preparing the magnetic carbon spheres, and the iron-containing source is simultaneously converted into a magnetic substance ferroferric oxide in the formation process of the carbon spheres, so that the carbon spheres have magnetism. In this example, the iron salt solution includes FeCl₃Solution, Fe (NO)₃)₃Solution and Fe₂(SO₄)₃At least one of the solutions may be any one of the above three solutions, or a mixed solution of two or three of them. Further, the molar concentration of iron ions in the iron salt solution is 0.01-0.1M, and specifically, the FeCl₃Solution, Fe (NO)₃)₃solution and Fe₂(SO₄)₃the molar concentration of iron ions in the solution is 0.01-0.1M. In this concentration range, the FeCl₃Solution, Fe (NO)₃)₃Solution and Fe₂(SO₄)₃The solution has proper viscosity and is easy to prepare, thereby not only avoiding the problems of overhigh viscosity and difficult dispersion of the solution caused by high concentration, but alsoThe problem that the amount of the solvent in the solution is excessive due to low concentration, so that more waste liquid is generated in the process of preparing the magnetic carbon spheres is solved.

Further, the volume ratio of the carbon compound-containing solution to the iron salt solution is 1: (0.01-1), and in the range of the mixture ratio, ferroferric oxide generated by the ferric salt solution is doped in the carbon spheres without a large amount of residue, so that the waste of raw materials is avoided. In the step S10, a stirring method (for example, mechanical stirring, magnetic stirring, etc.) that is conventional in the art may be used, the stirring time and method are not limited, and the two solutions may be mixed uniformly, for example, after the two solutions are mixed in proportion, the two solutions may be stirred for 0.5 to 2 hours to be mixed uniformly, so that the mixed solution is formed.

s20, heating the mixed solution to 80-160 ℃ for hydrothermal reaction for 6-20 h, then carrying out solid-liquid separation, collecting a solid product, and washing and drying the solid product to obtain magnetic carbon spheres;

The hydrothermal reaction can be carried out in equipment such as a hydrothermal reaction kettle, and specifically, the carbon-containing compound solution and the iron salt solution can be directly added into the hydrothermal reaction kettle during batching, the mixture is stirred and mixed by a stirring device in the hydrothermal reaction kettle, then the temperature is increased to 80-160 ℃ for reaction for 6-20 hours, after the reaction is finished, solid products in reaction products are separated by filtration, centrifugation and other modes, and then the solid products are washed and dried to remove liquid components remaining on the surfaces of the solid products, so that the magnetic carbon spheres are prepared.

Step S30, adding the magnetic carbon spheres into a cobalt salt solution, dispersing uniformly, adding an ammonia solution, stirring, mixing, heating to 120-180 ℃, carrying out hydrothermal reaction for 8-20 h, carrying out solid-liquid separation, collecting a solid product, washing and drying the solid product, and obtaining a magnetic carbon sphere supported cobaltosic oxide catalyst;

After the magnetic carbon spheres are added into the cobalt salt solution, the magnetic carbon spheres are uniformly dispersed in the cobalt salt solution through ultrasonic dispersion for 20-80 min, and in the process, because a large number of polar groups such as hydroxyl, carboxyl and the like exist on the surfaces of the magnetic carbon spheres, cobalt ions are uniformly adsorbed on the surfaces of the magnetic microspheres under the action of the groups; after the ammonia solution is added, cobalt ions adsorbed on the surfaces of the magnetic microspheres are converted into cobalt hydroxide; then in the process of carrying out hydrothermal reaction, the cobalt hydroxide is converted into cobalt tetroxide to be loaded on the surface of the magnetic carbon sphere to form the magnetic carbon sphere loaded cobalt tetroxide.

Specifically, the cobalt salt solution provides a cobalt-containing source for preparing cobaltosic oxide, and in this embodiment, the cobalt salt solution comprises CoCl₂Solution, Co (NO)₃)₂Solution and Co (C)₂H₃O₂)₂At least one of the solutions may be any one of the above three solutions, or a mixed solution of two or three of them. Further, the molar concentration of cobalt salt in the cobalt salt solution is 0.01-0.1M, and the addition amount of the magnetic carbon spheres is 0.1-1 g of magnetic carbon spheres added in each liter of cobalt salt solution; the mass fraction of ammonia in the ammonia water solution is 20-35%, and the volume ratio of the cobalt salt solution to the ammonia water solution is 1: (0.35-5). Under the condition of the proportion, the adsorption and desorption of cobalt ions in the cobalt salt solution on the surface of the magnetic carbon sphere and the growth phase of cobalt-containing crystals are proper, and the cobalt-containing crystals can grow on the surface of the magnetic carbon sphere.

According to the technical scheme provided by the invention, a carbon-containing compound and a ferric salt solution are used as precursors, and a magnetic carbon sphere is prepared through a hydrothermal reaction; carrying out hydrothermal reaction on the prepared magnetic carbon spheres, a cobalt salt solution and an ammonia water solution to prepare a magnetic carbon sphere-loaded cobaltosic oxide catalyst, wherein the prepared magnetic carbon sphere-loaded cobaltosic oxide catalyst has different pollutant treatment effects such as adsorption and catalytic degradation, the catalytic efficiency is high in the process of catalyzing persulfate to degrade organic pollutants in water, and the pollutant treatment is efficient; moreover, the magnetic carbon sphere loaded cobaltosic oxide also has certain magnetism, can be recycled under an external magnetic field, and has the advantage of easy recycling; in addition, the method also has the advantages of simple and convenient preparation process, convenient operation, mild reaction conditions, low prices of equipment and reagents used in the process, low preparation cost and the like.

Based on the advanced oxidation technology of the sulfuric acid free radicals and the preparation method of the magnetic carbon sphere supported cobaltosic oxide catalyst, the invention also provides a method for degrading aniline wastewater, and the magnetic carbon sphere supported cobaltosic oxide catalyst prepared in the embodiment is used for catalyzing and activating persulfate to release sulfate radical, so that organic pollutants in water can be rapidly and effectively decomposed and mineralized. In an embodiment of the method for degrading aniline wastewater provided by the present invention, the method for degrading aniline wastewater comprises the following steps:

adding a magnetic carbon sphere loaded cobaltosic oxide catalyst into the aniline wastewater, then adding persulfate, stirring, heating to 30-50 ℃, and carrying out oscillation reaction for 0.5-2 h to complete the degradation treatment of the aniline wastewater.

Magnetic carbon spheres loaded with cobaltosic oxide are used as a transition metal catalyst, persulfate is catalytically activated into sulfate radicals, aniline in water is rapidly and effectively decomposed and mineralized by utilizing the high oxidation capacity of the sulfate radicals, and the reaction condition is mild; meanwhile, the magnetic carbon balls have an adsorption effect on organic pollutants in wastewater and have a certain catalytic activation effect on persulfate, so that the magnetic carbon balls are used for loading cobaltosic oxide as a composite catalyst, the adsorption and catalytic degradation pollutant treatment technologies can be combined, and the removal efficiency of the organic pollutants in water is effectively improved through the synergistic effect of the adsorption and catalytic degradation pollutant treatment technologies. In addition, the magnetic carbon sphere supported cobaltosic oxide catalyst has magnetism and is easy to recycle under an external magnetic field.

Preferably, in this embodiment, the persulfate includes Na₂S₂O₈、K₂S₂O₈And KHS₂O₈At least one of the three substances can be any one of the three substances, or a mixture of two or three of the three substances, and the catalytic activation effect of the magnetic carbon sphere supported cobaltosic oxide catalyst provided by the invention is better. Further, the addition amount of the magnetic carbon sphere supported cobaltosic oxide catalyst is 0.1-1 g of Na and 0.1-1 g of the catalyst added into each liter of aniline wastewater₂S₂O₈、K₂S₂O₈And KHS₂O₈When the persulfate is added specifically, 0.05-0.5 g of persulfate is added into each liter of aniline wastewater, under the addition, the magnetic carbon ball loaded cobaltosic oxide catalyst can catalyze and activate the persulfate to the maximum extent to form sulfuric acid free radicals, so that the aim of effectively degrading organic pollutants in the aniline wastewater is fulfilled, the treatment efficiency and the treatment rate are proper, and the phenomenon that too much persulfate is left due to high concentration to form secondary pollution is avoided; and the problems of too low treatment rate of pollutants, incomplete treatment and the like caused by low concentration are also avoided.

The method for degrading the aniline wastewater can be used for rapidly and effectively degrading organic pollutants in the aniline wastewater, and is preferably suitable for treating the aniline wastewater with the aniline concentration of 50-20 mg/L, and the aniline degradation rate is high and the speed is high. More preferably, the method for degrading aniline wastewater provided by the invention is carried out in acidic and neutral solutions, for example, the pH value of the solution is 3.0-7.0, the catalytic degradation effect on aniline in aniline wastewater is excellent, and the removal rate of aniline can reach more than 80%.

The technical solutions of the present invention are further described in detail below with reference to specific examples and drawings, it should be understood that the following examples are merely illustrative of the present invention and are not intended to limit the present invention.