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Method for preparing multi-phase photonic Fenton catalyst from city sludge and red brick wastes and product and application

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: 2018-05-22
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 for preparing multi-phase photonic Fenton catalyst from city sludge and red brick wastes and product and application
  • Method for preparing multi-phase photonic Fenton catalyst from city sludge and red brick wastes and product and application
  • Method for preparing multi-phase photonic Fenton catalyst from city sludge and red brick wastes and product and application

Examples

Experimental program
Comparison scheme
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

The invention provides a method for preparing a multi-phase photonic Fenton catalyst from city sludge and red brick wastes. As city sludge and red brick wastes are adopted as raw materials, gasses released from organic matters in sludge in high-temperature pyrolysis are adopted as a catalyst pore forming agent, minerals formed because of high-temperature melting of inorganic ash in the sludge andred bricks are adopted as a catalyst carrier, and iron in the red brick wastes is adopted as an active component of the catalyst, the catalyst is easy in raw material obtaining, low in cost, high in benefit, large in specific surface area, good in visible light response, stable in product quality, and the like; secondly, the method has the characteristics of being simple in process, relatively lowin production cost, easy in on-scale production, good in waste recycling, and the like.

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 Applications(China)
IPC IPC(8): B01J23/745C02F1/30C02F1/72C02F101/30C02F101/34C02F101/38
CPCC02F1/30C02F1/722C02F1/725B01J23/745C02F2101/308C02F2101/40C02F2101/38C02F2101/345C02F2101/34C02F2305/10C02F2305/026B01J35/50B01J35/615B01J35/635B01J35/647B01J35/39
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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