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Preparation method of sewage treatment catalyst and application of sewage treatment catalyst in sewage treatment

A sewage treatment and catalyst technology, applied in the direction of adsorption water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as unfavorable catalytic degradation efficiency, weak adsorption of pollutants, and difficult separation. Achieve the effect of simple preparation process, low cost and good effect

Inactive Publication Date: 2021-04-20
邹金宏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Trimanganese tetraoxide (Mn 3 o 4 ) is a common Fenton-like catalyst. Usually, this type of material has certain magnetic properties. Therefore, compared with other powder materials, it can be sucked out from the system through a magnet after the reaction is over, solving the problem of Separation is difficult, but the adsorption of pollutants by powder materials is weak, which is not conducive to maximizing the efficiency of catalytic degradation

Method used

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  • Preparation method of sewage treatment catalyst and application of sewage treatment catalyst in sewage treatment
  • Preparation method of sewage treatment catalyst and application of sewage treatment catalyst in sewage treatment
  • Preparation method of sewage treatment catalyst and application of sewage treatment catalyst in sewage treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Mn 3 o 4 Synthesis of @GA airgel: Weigh 2 mg of graphene oxide and dissolve it in 50 mL of deionized water, and perform ultrasonic treatment to obtain a uniform suspension, which is marked as dispersion 1. Subsequently, 20 g of ethanol solution (18 g of ethanol, 2 g of water) was added to the above dispersion 1 and continued stirring to obtain dispersion 2. Weigh 30 mg of Mn(Ac) 2 4H 2 0 and 10 mg of L-lysine were added to the dispersion 2, and the stirring was continued to obtain a suspension 3, and then the suspension 3 was transferred to an autoclave lined with polytetrafluoroethylene, and transferred to an oven 120 ºC for 6 h. After the reaction, the obtained black product was washed several times to remove excess unreacted components and impurities. The product was freeze-dried at -30 ºC for 36 h. The collected samples are labeled as Mn 3 o 4 @GA-1.

[0036] (2) Mn 3 o 4 @GA airgel catalytic oxidation of phenol solution: select 200 mL of phenol with ...

Embodiment 2

[0038] (1) Mn 3 o 4 Synthesis of @GA airgel: 4 mg of graphene oxide was weighed and dissolved in 50 mL of deionized water, and subjected to ultrasonic treatment to obtain a uniform suspension, marked as dispersion 1. Subsequently, 20 g of ethanol solution (16 g of ethanol, 4 g of water) was added to the above dispersion 1 and continued stirring to obtain dispersion 2. Weigh 40 mg of Mn(Ac) 2 4H 20 and 20 mg of L-lysine were added to the dispersion 2, and the stirring was continued to obtain a suspension 3, and then the suspension 3 was transferred to an autoclave lined with polytetrafluoroethylene, and transferred to an oven 120 ºC for 10 h. After the reaction, the obtained black product was washed several times to remove excess unreacted components and impurities. The product was freeze-dried at -40 ºC for 36 h. The collected samples are labeled as Mn 3 o 4 @GA-2.

[0039] (2) Mn 3 o 4 @GA Airgel Catalyzed Oxidation of Phenol Solution: Follow the degradation condit...

Embodiment 3

[0041] (1) Mn 3 o 4 Synthesis of @GA airgel: Weigh 5 mg of graphene oxide and dissolve it in 50 mL of deionized water, and perform ultrasonic treatment to obtain a uniform suspension, which is marked as dispersion 1. Subsequently, 20 g of ethanol solution (10 g of ethanol, 10 g of water) was added into the above dispersion 1 and continued stirring to obtain dispersion 2. Weigh 50 mg of Mn(Ac) 2 4H 2 0 and 20 mg of L-lysine were added to the dispersion 2, and the stirring was continued to obtain a suspension 3, and then the suspension 3 was transferred to an autoclave lined with polytetrafluoroethylene, and transferred to an oven 140 ºC for 12 h. After the reaction, the obtained black product was washed several times to remove excess unreacted components and impurities. The product was freeze-dried at -30 ºC for 48 h. The collected samples are labeled as Mn 3 o 4 @GA-3.

[0042] (2) Mn 3 o 4 @GA Airgel Catalyzed Oxidation of Phenol Solution: Follow the degradation co...

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Abstract

The invention discloses a preparation method of a sewage treatment catalyst and application of the sewage treatment catalyst in sewage treatment, and belongs to the technical field of water treatment and environmental treatment. The method comprises the following steps of: weighing a certain amount of graphene oxide, dissolving the graphene oxide in deionized water, carrying out ultrasonic treatment to obtain uniform turbid liquid, and marking the turbid liquid as dispersion liquid 1; adding a certain amount of an ethanol solution into the dispersion liquid 1 in the step 1, and performing continuous stirring to obtain a dispersion liquid 2; and weighing a certain amount of manganese acetate tetrahydrate and L-lysine, adding the weighed manganese acetate tetrahydrate and L-lysine into the dispersion liquid 2 obtained in the step 2, performing continuous stirring to obtain a turbid liquid 3, transferring the turbid liquid 3 into a high-pressure kettle with a polytetrafluoroethylene lining, and carrying out a hydrothermal reaction. Adsorption and catalytic degradation results show that the adsorption rate of the manganous-manganic oxide / graphene composite aerogel on phenol reaches 58%, and the degradation rate reaches 98%, and the adsorption rate and the degradation rate are far higher than those of powder Mn3O4 (the adsorption rate is 13% and the degradation rate is 42%) in a contrast sample.

Description

technical field [0001] The invention belongs to the technical field of water treatment and environmental treatment, and in particular relates to a preparation method of a sewage treatment catalyst and its application in sewage treatment. Background technique [0002] Although the rapid development of industrialization has brought people a convenient life, it has also caused serious pollution to the environment on which we live. Water pollution is the main cause of environmental pollution. Pollutants in water mainly come from petrochemical, textile printing and dyeing, papermaking, leather, pharmaceutical and other industries. Organic dyes are one of the common pollutants in wastewater. Common pollutant removal methods include biological oxidation, adsorption, membrane separation, coagulation, and chemical oxidation. [0003] Fenton-like is a new concept developed on the basis of Fenton. It is a compound that uses metals (Cu, Mn, Co, etc.) containing multiple valence states...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J20/28B01J20/20B01J20/06B01J20/30C02F1/28C02F1/72C02F101/34
Inventor 邹金宏
Owner 邹金宏
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