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Ferrite-modified modified carbon fiber cloth electrode, preparation method and application thereof

A carbon fiber cloth, modification and modification technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment equipment, etc., can solve the problems of low POPs concentration and limited removal

Active Publication Date: 2019-08-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that due to the wide range of POPs components and the low concentration in sewage, the ability of traditional treatment technologies to remove such pollutants is very limited

Method used

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  • Ferrite-modified modified carbon fiber cloth electrode, preparation method and application thereof
  • Ferrite-modified modified carbon fiber cloth electrode, preparation method and application thereof
  • Ferrite-modified modified carbon fiber cloth electrode, preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0102] Embodiment 1 Preparation of ferrite-modified modified carbon fiber cloth electrochemical cathode

[0103] 1) Cut the original carbon fiber cloth into a circle with a diameter of 3.5 cm, and use a mixture of nitric acid with a mass fraction of 10% and a sulfuric acid solution with a mass fraction of 10% (the volume ratio of nitric acid: sulfuric acid is 3:1) to treat the carbon cloth. After soaking and ultrasonic treatment for 30 minutes, react in a constant temperature reactor at 50°C for 48 hours. After the solution is cooled, wash it with ultrapure water several times to remove surface residue impurities until the pH of the washing solution is neutral, and then in 40 ℃ in a vacuum oven until it reaches a constant quality, and the modified carbon fiber cloth is obtained;

[0104] 2) Soak the above-mentioned modified carbon fiber arrangement in ultrapure water, and then add 0.4mol / L Fe(NO 3 ) 3 9H 2 O and 0.2mol / L Cu(NO 3 ) 2 ·3H 2 O, sonicate for 1 hour to mix ev...

Embodiment 2

[0105] Example 2 Preparation of Ferrite Modified Carbon Fiber Cloth Electrochemical Cathode

[0106] 1) Cut the original carbon fiber cloth into a circle with a diameter of 3.5cm, take 1.5mL of 30wt% H 2 o 2 and 97mL of ultrapure water were placed in a 250mL Erlenmeyer flask, and the pH was adjusted to 3, then 1.5mL of 0.2mol / L Fe was added 2+ Solution (it can be ferrous sulfate or ferric chloride solution), soak the carbon cloth, after 30 minutes of ultrasonic treatment, react in a constant temperature reactor at 50°C for 48 hours, after the solution is cooled, wash it with ultrapure water Several times, remove surface residues and impurities until the pH of the washing liquid is neutral, and then fully dry in a vacuum oven at 40°C until a constant quality is achieved, and the modified carbon fiber cloth is obtained;

[0107] 2) Soak the above-mentioned modified carbon fiber arrangement in ultrapure water, and then add 0.4mol / L Fe(NO 3 ) 3 9H 2 O and 0.2mol / L Cu(NO 3 ) ...

Embodiment 3

[0109] The difference from Example 1 is that the mass fraction of 10% nitric acid and 10% mass fraction of sulfuric acid solution (nitric acid: sulfuric acid volume ratio is 3:1) is replaced by: 0.3mol / L hypochlorous acid , other with embodiment 1.

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Abstract

The invention discloses a ferrite-modified modified carbon fiber cloth electrode, a preparation method and an application thereof, comprising the following steps: 1) preparing the modified carbon fiber cloth; 2) preparing that modified carbon fiber cloth electrochemical cathode modified by the ferrite material. The invention also discloses the modified carbon fiber cloth electrode modified by theferrite material and the application thereof. The ferrite-modified modified carbon fiber cloth electrochemical cathode can be used in electrochemical / ozone coupled water treatment system. As that rawmaterials of the preparation method are convenient to obtain, the preparation process is simple, the cost is low, the catalytic activity is high, the electrode performance is superior, and the preparation method is a water treatment technology with low energy consumption, high efficiency and complete mineralization of pollutant. The ferrite-modified modified carbon fiber cloth electrochemical cathode prepared by the invention has broad application prospect in the degradation of persistent organic pollutants (POPs) in the circulating electric filtration system.

Description

technical field [0001] The invention belongs to the field of advanced sewage treatment, in particular to a ferrite modified carbon fiber cloth electrode and its preparation method and application, in particular to the use of ferrite modified carbon fiber cloth electrochemical cathode and carbon fiber cloth anode in electrochemical / ozone coupling The application of the system to degrade POPs pollutants. Background technique [0002] The sources of POPs in the water environment are mainly through the following two channels: one is that domestic sewage, industrial wastewater, and hospital wastewater containing high concentrations of POPs enter natural water bodies such as rivers and lakes after incomplete removal by sewage treatment plants; Direct discharge of livestock and aquaculture wastewater or underground infiltration make POPs enter the water environment. Due to the wide range of POPs components and low concentration in sewage, the ability of traditional treatment techn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/78
CPCC02F1/46109C02F1/4672C02F1/78C02F2001/46142C02F2201/4619
Inventor 姚晶晶李海普屠焓钰杨兆光茶丽娜攸娅娴夏琳琳
Owner CENT SOUTH UNIV
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