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Sludge-based co/fe bimetallic composite fenton catalyst and its preparation method and application

A catalyst and bimetallic technology, which is applied in the field of sludge-based Co/Fe bimetallic composite Fenton catalyst and its preparation, to achieve the effects of reducing volume, reducing occupation, and reducing the cost of use

Active Publication Date: 2021-02-05
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional sludge treatment methods such as ocean dumping, landfill, incineration, etc. have potential environmental risks to soil, water, and air. Therefore, it is extremely important to find new methods of pollution-free and high value-added sludge treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Raw material

[0031] Sludge, ferrous sulfate, cobalt nitrate

[0032] 2. Process steps

[0033] (1) The sludge is heat-treated to obtain sludge powder, and the sludge powder is crushed and ground and passed through an 80-mesh sieve;

[0034] (2) Loading: Weigh 10g of sludge activated carbon powder, add 30mL impregnation solution containing cobalt ions and iron ions with a ratio of 7:3, impregnate, stir, and dry at 105°C to obtain the loaded product;

[0035] (3) Calcination: Put the above-mentioned loaded product in a boat-shaped crucible and place it in a high-temperature tubular resistance furnace, control the heating rate to 20°C / min, the pyrolysis temperature to 550°C, and the pyrolysis time to 2.0h. During the experiment, pass N 2 protect, controlN 2 The flow rate is 0.1m 3 / h;

[0036] (4) Grinding: Grinding the calcined product;

[0037] (5) Cleaning: The loaded product was washed with deionized water until the conductivity remained constant, and dried ...

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PUM

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Abstract

The invention discloses a sludge-based Co / Fe dual-metal compound Fenton catalyst as well as a preparation method and an application thereof. The sludge-based Co / Fe dual-metal compound Fenton catalyst is prepared by the steps of with sludge as a carrier and ferrous sulfate and cobalt nitrate as a catalyst transition metal source, dipping, drying, and carrying out pyrolysis at 350-600 DEG C. A technique for simultaneously pyrolyzing sludge and preparing the sludge-based Co / Fe dual-metal compound Fenton catalyst is provided, the prepared catalyst is applied to the field of pollution degradation of refractory organic matters such as similar Fenton degradation azo dyes, and the sludge reclamation and the ''treatment of wastes with processes of wastes'' are realized.

Description

technical field [0001] The invention belongs to the technical field of waste resource utilization and advanced oxidation, and in particular relates to a sludge-based Co / Fe bimetallic composite Fenton catalyst and a preparation method and application thereof. Background technique [0002] As the volume of industrial wastewater treatment increases, the amount of sludge generated during the treatment process also increases significantly. Traditional sludge treatment methods, such as ocean dumping, landfill, and incineration, have potential environmental risks to soil, water, and air. Therefore, it is extremely important to find new methods of sludge treatment that are non-polluting and high-value-added. Sludge, especially papermaking sludge, contains a large amount of carbon, and sludge can be prepared into sludge-based carbon after pyrolysis. Sludge pyrolysis generates sludge charcoal, and the volume of sludge is reduced. In this process, most pathogens and microorganisms can...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75C02F1/72C02F11/10C02F101/30
CPCB01J23/75B01J35/02C02F1/722C02F1/725C02F11/10C02F2101/30C02F2305/026Y02W10/40
Inventor 陈晓旸姚燕来洪春来朱凤香王卫平国媛媛
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES