Particle electrode and preparation method thereof and three-dimensional electrolytic reactor and application of three-dimensional electrolytic reactor

A granular electrode and three-dimensional electrolysis technology, which is applied in chemical instruments and methods, light water/sewage treatment, water pollutants, etc., can solve the problems of unsuitable strong acid and strong alkaline wastewater, less research on three-dimensional electrolysis systems, and the loss of active components of catalysts and other issues, to achieve the effects of recycling, improving photocatalytic efficiency, and eliminating short-circuit current

Inactive Publication Date: 2019-05-28
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are still many deficiencies in the photo-assisted three-dimensional electrolysis system. The specific performance is as follows: (1) Some such as three-dimensional electrode materials have serious loss of catalyst active components, poor acid and alkali resistance, and are not suitable for strong acid and strong alkaline wastewater (2) At present, most of the photocatalytic reactions for particle electrodes stay in the three-dimensional electrolysis system of ultraviolet light, and there are few studies on the three-dimensional electrolysis system under visible light; (3) During the operation of three-dimensional electrolysis, the particle electrodes are easy to accumulate and produce dead ends, thereby generating short-circuit currents. reduce the efficiency of electrolysis

Method used

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  • Particle electrode and preparation method thereof and three-dimensional electrolytic reactor and application of three-dimensional electrolytic reactor
  • Particle electrode and preparation method thereof and three-dimensional electrolytic reactor and application of three-dimensional electrolytic reactor
  • Particle electrode and preparation method thereof and three-dimensional electrolytic reactor and application of three-dimensional electrolytic reactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] g-C 3 N 4 -TiO 2 Preparation of / AC granular electrode filler:

[0034] S1: Pretreatment of activated carbon: screen activated carbon of 7 to 14 mesh, soak it with 10% hydrochloric acid solution and 5% NaOH solution at room temperature, and clean it with ultrasonic vibration for 30 minutes, then wash it with distilled water several times, and then wash the treated Put the activated carbon in an oven and dry it at 100°C for 12 hours, and cool it for later use;

[0035] S2: g-C 3 N 4 Preparation: Weigh 10g of melamine in a crucible, cover the crucible and put it into a muffle furnace for calcination. The heating rate is 3-4°C / min, and the temperature is 500°C. After burning for 2 hours, cool naturally and grind it into powder particles. spare;

[0036] S3: Fully mix 40mL of absolute ethanol, 10mL of acetic acid and 20mL of tetrabutyl titanate. After stirring, a clear solution is obtained. Weigh 5g of g-C 3 N 4 Put the powder particles into the solution and stir to o...

Embodiment 2

[0041] g-C 3 N 4 -TiO 2 Preparation of / AC granular electrode filler:

[0042] S1: Pretreatment of activated carbon: screen activated carbon of 7 to 14 mesh, soak it with 6% hydrochloric acid solution and 10% NaOH solution at room temperature, and clean it with ultrasonic vibration for 30 minutes, then wash it with distilled water several times, and then wash the treated Put the activated carbon in an oven and dry it at 120°C for 12 hours, and cool it for later use;

[0043] S2: g-C 3 N 4 Preparation: Weigh 10g of melamine in a crucible, cover the crucible and put it into a muffle furnace for calcination. The heating rate is 3-4°C / min, and the temperature is 550°C. After burning for 3 hours, cool naturally and grind it into powder particles. spare.

[0044] S3: Fully mix 40mL of absolute ethanol, 10mL of acetic acid and 20mL of tetrabutyl titanate. After stirring, a clear solution is obtained. Weigh 5g of g-C 3 N 4 Put the powder particles into the solution and stir to...

experiment example 1

[0056] like figure 2 Shown: the three-dimensional electrolysis reactor of the present invention includes a fluidized bed reactor 1 and a xenon lamp 9 that provides illumination for the system in the fluidized bed reactor 1; the fluidized bed reactor 1 is provided with a cathode stainless steel cylinder 3 and an anode titanium cylinder 2. During the reaction, the fluidized bed reactor 1 is also filled with g-C 3 N 4 -TiO 2 / AC particle electrode 6; the anode titanium cylinder 2 is sleeved outside the cathode stainless steel cylinder 3, the distance between the two electrodes is 4cm, and metal strips are welded on the two electrode tubes to connect the DC steady-current power supply 7, and the cathode stainless steel cylinder 3 is also the guide cylinder Function: the cathode stainless steel cylinder 3 is set in the fluidized bed reactor 1 through an iron frame, so that there is a gap between the bottom of the fluidized bed reactor 1 and the bottom of the cathode stainless st...

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Abstract

The invention belongs to the technical field of water treatment and water pollution prevention, and relates to a particle electrode and a preparation method thereof and a three-dimensional electrolytic reactor and application of the three-dimensional electrolytic reactor. The particle electrode is formed by loading g-C3N4 and TiO2 on activated carbon after g-C3N4 and TiO2 are compounded, wherein the mass of g-C3N4 accounts for 40%-50% of the total mass of a g-C3N4-TiO2 compound, and the particle electrode is a g-C3N4-TiO2/AC particle with visible-light catalytic activity. The three-dimensionalelectrolytic reactor is filled with the g-C3N4-TiO2/AC particle, the mass transfer effect of an upflow type fluidized bed is improved, the short circuit current is eliminated, and the current efficiency is improved; and under the conditions of the electric field and the illumination, the electrolysis reaction and the photocatalytic reaction generate synergistic effect on the g-C3N4-TiO2/AC particle electrode, and the three-dimensional electrolytic reactor has a better treatment effect on nonbiodegradable matter.

Description

technical field [0001] The invention belongs to the technical field of water treatment and water pollution prevention and control, and specifically relates to a granular electrode and a preparation method thereof, a three-dimensional electrolysis reactor and an application thereof, which can be used for the treatment of refractory biodegradable organic wastewater. Background technique [0002] With the development of industrial technology, the wastewater generated in the production process has the characteristics of increasing water volume, more and more complex composition and poorer biodegradability. It is difficult to meet the standard treatment with traditional processes. Three-dimensional electrolysis method is used to treat wastewater It can overcome the interference of biological toxic components, is suitable for the treatment of organic wastewater that is difficult to biodegrade, and has the advantages of small footprint, large specific surface area, good mass transfe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/72C02F1/30C02F101/30
Inventor 高永周俊我李婷婷高凌岳傅小飞张曼莹刘芳孙紫晶王荔
Owner JIANGSU UNIV OF TECH
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