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Preparation method of three-dimensional supported cobalt hydroxide and method of using three-dimensional supported cobalt hydroxide for catalytically treating phenol wastewater by persulfate

A technology of cobalt hydroxide and persulfate, applied in metal/metal oxide/metal hydroxide catalysts, oxidized water/sewage treatment, chemical instruments and methods, etc., can solve the problems of difficult recycling and complex preparation methods, etc. , to achieve the effect of not easy inactivation, simple preparation method and avoiding secondary pollution

Inactive Publication Date: 2019-11-08
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention is to overcome the problems that the preparation method of the existing potassium monoperoxohydrogensulfate catalyst in the background technology is complex and difficult to recycle, and provide a preparation method for three-dimensional loaded cobalt hydroxide

Method used

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  • Preparation method of three-dimensional supported cobalt hydroxide and method of using three-dimensional supported cobalt hydroxide for catalytically treating phenol wastewater by persulfate
  • Preparation method of three-dimensional supported cobalt hydroxide and method of using three-dimensional supported cobalt hydroxide for catalytically treating phenol wastewater by persulfate
  • Preparation method of three-dimensional supported cobalt hydroxide and method of using three-dimensional supported cobalt hydroxide for catalytically treating phenol wastewater by persulfate

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Experimental program
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Effect test

Embodiment 1

[0037] The preparation of foamy nickel-based cobalt hydroxide catalyst and the method for processing phenol waste water are as follows:

[0038] (1) Pretreatment of nickel foam

[0039] Soak nickel foam (3cm×4cm×2mm) in acetone and ultrasonicate for 15 minutes to remove a small amount of oil on the nickel foam substrate. Clean the foamed nickel after the above treatment with distilled water for 10 minutes, and then etch it with 5 mol / L hydrochloric acid for 20 minutes to remove the oxide layer on the surface of the substrate and form a microscopic rough surface on the surface of the foamed nickel, thereby enhancing its interaction with cobalt hydroxide. combination. The nickel foam etched by hydrochloric acid was ultrasonically cleaned with distilled water for 15 minutes, then rinsed several times with distilled water, and finally the nickel foam treated above was dried in an oven at 60°C for 2 hours. Observation by scanning electron microscope found that the surface of nick...

Embodiment 2

[0046] The preparation of foamy nickel-based cobalt hydroxide catalyst and the method for processing phenol waste water are as follows:

[0047] (1) Pretreatment of nickel foam

[0048] Soak nickel foam (4cm × 5cm × 2mm) in acetone, ultrasonic 12min, to remove trace oil stains on the nickel foam substrate, thereby increasing the hydrophilicity of the substrate; the nickel foam after the above treatment is ultrasonically cleaned with distilled water for 15min, and then Etch with 8mol / L hydrochloric acid for 15 minutes to remove the oxide layer on the surface of the substrate and form a microscopically rough surface on the surface of the nickel foam, thereby enhancing its bonding force with cobalt hydroxide; the nickel foam etched by hydrochloric acid is ultrasonicated with distilled water Wash for 15 minutes, rinse with distilled water for several times, and finally place the nickel foam treated above in an oven at 80°C for 1.5 hours to dry.

[0049] 2) Preparation of foamed n...

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Abstract

The invention relates to a preparation method of three-dimensional supported cobalt hydroxide and a method of using the three-dimensional supported cobalt hydroxide for catalytically treating phenol wastewater by persulfate. The invention solves the problems of complex preparation method and difficult recycling of an existing monoperoxide potassium hydrogen sulfate catalyst. The preparation of thethree-dimensional supported cobalt hydroxide is characterized by comprising the following steps: (1) pretreating three-dimensional foam nickel; and (2) growing cobalt hydroxide nanosheets in situ onthe foamed nickel pretreated in the step (1) by an electrochemical deposition method to prepare the foamed nickel-based cobalt hydroxide. The method of using the three-dimensional supported cobalt hydroxide catalyst for catalyzing a method for catalytically treating phenol wastewater by persulfate comprises the following steps: adding the foamed nickel-based cobalt hydroxide catalyst into the phenol wastewater, then adding monoperoxide potassium hydrogen sulfate, and carrying out stirring to degrade the phenol wastewater. The three-dimensional supported cobalt hydroxide catalyst is simple in preparation method, can be used to realize high-efficiency degradation of phenol wastewater, and can be recycled.

Description

technical field [0001] The invention relates to a composite catalytic material applied in the technical field of phenol wastewater treatment, in particular to a preparation of a three-dimensional loaded cobalt hydroxide and a method for catalyzing persulfate treatment of phenol wastewater. Background technique [0002] Phenol is an important chemical raw material, and it is also a carcinogenic, teratogenic, and mutagenic "three-cause" substance. Phenol wastewater mainly comes from the petrochemical industry, ceramic production process, and wood and resin factories that use phenol as raw material. The discharge volume is large. Therefore, the efficient treatment of phenol wastewater is very important for the protection of the ecological environment. [0003] Adsorption, extraction, reverse osmosis, ultrafiltration and other technologies cannot truly degrade phenol wastewater, and there is a problem of secondary pollution. The advanced oxidation technology based on sulfuric a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/75C02F1/72C02F101/34
CPCB01J23/755B01J23/75C02F1/722C02F2101/345
Inventor 袁瑞霞于鹏汪怀远荆国林陈彦广高斯萌姜明朗
Owner NORTHEAST GASOLINEEUM UNIV
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