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Waste recycling catalyst as well as preparation method and application thereof in treatment of organic pollutants

A technology of organic pollutants and catalysts, applied in the field of pollutant treatment, can solve the problems of high cost of environmental governance, achieve the effects of slowing down the pressure of environmental restoration, strong operability, and reducing treatment costs

Pending Publication Date: 2021-12-24
GUANGZHOU UNIVERSITY
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of high cost of environmental treatment and improve the utilization rate of livestock and poultry waste, a waste recycling catalyst and its preparation method and application in the treatment of organic pollutants are provided. The catalyst is a nano-particle chicken manure hybrid (JF-N NSs), using chicken manure as raw material, synthesized by air-drying, pulverizing and thermal cracking of chicken manure, followed by dehydration, condensation, annealing and reduction treatment

Method used

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  • Waste recycling catalyst as well as preparation method and application thereof in treatment of organic pollutants

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Effect test

Embodiment 1

[0030] A method for preparing a water treatment catalyst for recycling waste, the specific operation steps are as follows:

[0031] (1) Place the fresh chicken manure outdoors to dry naturally for 24 hours, and after drying, crush it through an 80-mesh sieve, remove the gravel, and obtain substance A;

[0032] (2) Place 10g of substance A in 100mL of deionized water and stir, and perform 30 minutes of ultrasound (operating frequency 40KHz, electric power 300W) to obtain solution B, remove the supernatant, pass through qualitative filter paper to obtain substance C, and place substance C in Precursor D was obtained by pyrolysis at 80°C for 120 minutes;

[0033] (3) Place precursor D in a tube furnace for copolymerization annealing treatment, with 0.2m 3 Nitrogen gas was fed at a rate of 500°C for 120 minutes at a rate of 5°C per minute. Solid powder E was obtained after cooling down. The solid powder E was washed three times with deionized water, dried at 80° C. (for 12 hour...

Embodiment 2

[0035] An application of a catalyst for water treatment of waste resources, the specific operation steps are as follows:

[0036] (1) Rhodamine B (RhB), methylene blue (MB), acid orange 7 (AO7), bisphenol A (BPA), and ciprofloxacin were prepared separately at room temperature at 10 mg / L (concentration of each organic pollutant) (CIP) simulated wastewater;

[0037] (2) Add 0.02g or 0.04g of JF-N NSs to 50mL of the above-mentioned simulated wastewater, maintain the natural pH value, and keep the constant temperature at 35°C. Turn on stirring and add potassium hydrogen persulfate to a final concentration of 2mM at the same time, start the reaction, take samples at different time points to detect the concentration of pollutants, and the removal rate of pollutants is as follows: figure 1 As shown, within 10 minutes, the degradation rate of most target pollutants can reach more than 50%; to 60 minutes, the degradation rate can reach more than 99%.

[0038] figure 1 middle:

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Abstract

The invention discloses a waste recycling catalyst as well as a preparation method and application thereof in treatment of organic pollutants. The preparation method of the catalyst comprises the following steps: drying chicken manure, conducting crushing, conducting sieving, and removing gravel; and dissolving the raw materials in water, conducting stirring, conducting dissolving, conducting filtering, pyrolyzing the retentate at 80-100 DEG C for 100-150 minutes, and conducting annealing at 500-550 DEG C in a nitrogen atmosphere for 100-120 minutes to obtain powder, namely the catalyst. The catalyst provided by the invention can be used for treating organic pollutants, especially for treating the organic pollutants by being combined with persulfate, and the catalyst provided by the invention can be used for activating the persulfate to generate sulfate free radicals to degrade the organic pollutants. The raw materials are cheap and easy to obtain, and the sewage treatment cost is reduced; waste is recycled, and the environmental restoration pressure is relieved; the process is simple and high in operability; and waste is treated by waste, and energy is saved.

Description

technical field [0001] The invention belongs to the field of pollutant treatment, and in particular relates to a waste recycling catalyst, a preparation method thereof and an application in treating organic pollutants. Background technique [0002] At present, my country has a large amount of wastewater discharge, and correspondingly a large amount of wastewater treatment. The high energy consumption and low efficiency of the treatment process have always been a problem in the treatment of sewage and wastewater in our country, which requires a lot of manpower and material resources. Therefore, there is an urgent need to develop low-cost and high-efficiency water treatment technologies and methods. [0003] There is a large amount of livestock and poultry manure discharged in my country. The conventional treatment method is mainly composting, which takes a long time, occupies a large area, produces odor, pollutes the environment, and has problems such as low utilization rate ...

Claims

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Application Information

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IPC IPC(8): B01J37/34B01J37/08B01J27/24C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J37/343B01J37/082B01J27/24B01J37/0036C02F1/722C02F1/725C02F2101/30C02F2101/308C02F2101/34C02F2101/345C02F2101/36C02F2101/38C02F2101/40C02F2305/023Y02W10/37
Inventor 韩沐恩吕来胡春廖梓彤卢超古宇婷
Owner GUANGZHOU UNIVERSITY
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