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Method, product and application of heterogeneous photofenton catalyst prepared from municipal sludge and red brick waste

A technology of municipal sludge and catalyst, which is applied in the field of waste resource utilization and environmental catalytic materials, can solve the problems of weak adsorption capacity of pollutants in water, low specific surface area of ​​catalyst, poor visible light response, etc., and achieve easy waste reuse, The effect of low cost and stable product quality

Active Publication Date: 2021-02-26
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently widely used iron oxide photo-Fenton catalysts have problems such as low catalyst specific surface area, weak adsorption capacity for pollutants in water, poor response to visible light, and expensive raw materials.

Method used

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  • Method, product and application of heterogeneous photofenton catalyst prepared from municipal sludge and red brick waste
  • Method, product and application of heterogeneous photofenton catalyst prepared from municipal sludge and red brick waste
  • Method, product and application of heterogeneous photofenton catalyst prepared from municipal sludge and red brick waste

Examples

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Effect test

Embodiment 1

[0028] This embodiment is a method for preparing heterogeneous photo-Fenton catalysts from municipal sludge and red brick waste, comprising the following steps:

[0029] Step 1, placing the dewatered sludge and red brick waste at 105°C for 24 hours to obtain dry sludge and dry red brick waste;

[0030] Step 2, the dry red brick waste material obtained in step 1 is pulverized with a mechanical pulverizer at a rotation speed of 2500 rpm / min, and after pulverization, the dry red brick waste material particles are obtained through 60 mesh screening;

[0031] Step 3, mixing 3Kg of dry sludge obtained in step 1 with 2Kg of dry red brick waste particles obtained in step 2, and then grinding with a ball mill at a speed of 15rpm / min, and screening through 300 meshes to obtain mixed particles after grinding;

[0032] Step 4, placing the mixed particles obtained in step 3 in a muffle furnace, and calcining at 950°C, the calcination time is 60min, the heating rate is 10°C / min, and after t...

Embodiment 2

[0036] This embodiment is a method for preparing heterogeneous photo-Fenton catalysts from municipal sludge and red brick waste, comprising the following steps:

[0037] Step 1, placing the dewatered sludge and red brick waste at 100°C for 18 hours to obtain dry sludge and dry red brick waste;

[0038] Step 2, the dry red brick waste material obtained in step 1 is pulverized with a mechanical pulverizer at a rotation speed of 1500 rpm / min, and after pulverization, the dry red brick waste material particles are obtained through 60-mesh screening;

[0039] Step 3, mixing 4Kg of dry sludge obtained in step 1 with 2Kg of dry red brick waste particles obtained in step 2, and then grinding with a ball mill at a speed of 18rpm / min, and screening through 300 meshes to obtain mixed particles after grinding;

[0040] Step 4, placing the mixed particles obtained in step 3 in a muffle furnace, and calcining at 800°C, the calcination time is 30 minutes, the heating rate is 15°C / min, and af...

Embodiment 3

[0044] This embodiment is a method for preparing heterogeneous photo-Fenton catalysts from municipal sludge and red brick waste, comprising the following steps:

[0045] Step 1, placing the dewatered sludge and red brick waste at 95°C for 12 hours to obtain dry sludge and dry red brick waste;

[0046] Step 2, the dry red brick waste material obtained in step 1 is pulverized with a mechanical pulverizer at a rotation speed of 1000 rpm / min, and after pulverization, the dry red brick waste material particles are obtained through 60-mesh screening;

[0047] Step 3, mixing 4Kg of dry sludge obtained in step 1 with 1Kg of dry red brick waste particles obtained in step 2, and then grinding with a ball mill at a speed of 21rpm / min, and screening through 300 meshes to obtain mixed particles after grinding;

[0048]Step 4, placing the mixed particles obtained in step 3 in a muffle furnace, and calcining at 1050° C. for 120 minutes, with a heating rate of 20° C. / min. After the calcinatio...

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Abstract

A method for preparing multi-phase photo-Fenton catalysts from municipal sludge and red brick waste provided by the invention, because municipal sludge and red brick waste are used as raw materials, and the gas released during high-temperature pyrolysis of organic matter in the sludge is used as a catalyst to produce The porogen uses sludge and minerals formed by inorganic ash in red bricks when they are melted at high temperature as the catalyst carrier, and uses iron in red brick waste as the active component of the catalyst, so it has easy-to-obtain raw materials, low cost, and good benefits. The catalyst has the advantages of high specific surface area, good response ability to visible light, and stable product quality. Secondly, the preparation method has the characteristics of simple process, low production cost, easy large-scale production and waste reuse.

Description

technical field [0001] The invention relates to the technical field of waste resource utilization and environmental catalytic materials, in particular to a method for preparing a multiphase photo-Fenton catalyst from urban sludge and red brick waste, a multi-phase photo-Fenton catalyst and a multi-phase photo-Fenton catalyst in the presence of peroxidation Application of a series of reactions initiated by light induction in the presence of hydrogen. Background technique [0002] In recent years, with the increase in the amount of municipal sewage and industrial sewage treatment in my country, the amount of sludge generated is also gradually increasing. Sludge has a high moisture content and contains a large amount of toxic and harmful pathogenic microorganisms and heavy metals. If it is not properly treated, it will cause serious environmental pollution. [0003] Red bricks, commonly known as clay bricks, refer to yellow clay, shale, coal gangue, etc. rich in iron as raw ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745C02F1/30C02F1/72C02F101/30C02F101/34C02F101/38
CPCB01J23/745B01J35/004B01J35/026B01J35/1019B01J35/1042B01J35/1061C02F1/30C02F1/722C02F1/725C02F2101/308C02F2101/34C02F2101/345C02F2101/38C02F2101/40C02F2305/026C02F2305/10
Inventor 谷麟陈旭董光霞乔兴博俞海祥王涛闻海峰张道方朱南文
Owner UNIV OF SHANGHAI FOR SCI & TECH
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