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Cobalt sulfide loaded biochar catalyst, preparation method and application thereof

A catalyst and biochar technology, applied in the field of environmental pollution control, can solve the problems of low activation efficiency and difficult separation of biochar, and achieve the effects of easy separation, recycling and reuse, easy access, and high catalytic activity.

Active Publication Date: 2021-12-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activation efficiency of biochar is low, and it is difficult to separate from the reaction solution after the reaction.

Method used

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  • Cobalt sulfide loaded biochar catalyst, preparation method and application thereof
  • Cobalt sulfide loaded biochar catalyst, preparation method and application thereof
  • Cobalt sulfide loaded biochar catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A cobalt sulfide loaded biochar material, the preparation method is as follows:

[0041] Ginkgo biloba leaves were washed with deionized water, centrifuged and dehydrated, dried at 80°C for 24 hours, crushed and passed through an 80-mesh sieve to obtain biomass powder;

[0042] Under magnetic stirring conditions, according to the mass ratio of biomass powder and cobalt element 1:0.1, 1g of biomass powder and 0.4749g of cobalt nitrate hexahydrate were added to 15mL of a mixed aqueous solution of hydrochloric acid and ethanol (the concentration of hydrochloric acid was 0.027mol / L, the concentration of ethanol is 9.38mol / L), stirred 20min;

[0043] Then add thiourea according to the cobalt-sulfur molar ratio of 1:1, continue to stir for 30 minutes, place the mixed solution in a 100mL reactor, control the temperature at 180°C for 12 hours for hydrothermal reaction, and cool to room temperature after completion to obtain mixed sulfurized Cobalt biomass solution, collect th...

Embodiment 2

[0046] Same as Example 1, the difference is that the biomass powder and cobalt element are mixed according to the mass ratio of 1:0.

Embodiment 3

[0048] Same as Example 1, the difference is that the biomass powder and cobalt element are mixed according to the mass ratio of 0:0.1.

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Abstract

The invention discloses a cobalt sulfide loaded biochar catalyst, a preparation method and application thereof, and belongs to the field of environmental pollution treatment. The preparation method of the catalyst comprises the following steps: firstly adding a biomass material and cobalt nitrate hexahydrate into a mixed aqueous solution of hydrochloric acid and ethanol, then adding thiourea, after the reaction is finished, carrying out hydrothermal reaction to obtain pre-pyrolyzed cobalt sulfide-doped biomass powder, and pyrolyzing to obtain the cobalt sulfide-loaded charcoal catalyst. According to the invention, the catalyst and peroxymonopotassium sulfate salt are added into a water body containing organic pollutants, so that the degradation of the organic pollutants in the water body can be realized; and the catalyst is wide in applicable pH range, high in organic matter removal efficiency, simple in preparation method, high in operability, good in durability, short in catalysis time and wide in application prospect.

Description

technical field [0001] The invention relates to the field of environmental pollution control, in particular to a cobalt sulfide-loaded biochar catalyst and a preparation method and application thereof. Background technique [0002] With the rapid development of social economy, the application of organic products is also increasing, and the number and types of organic pollutants are increasing year by year, causing a large number of toxic and harmful substances to enter the atmosphere, water, soil and other environments, which will affect the ecological environment. have a huge impact. In addition, organic pollutants entering the environment are difficult to degrade and decompose through biological action under natural conditions. They often enter organisms and human bodies directly or indirectly through the food chain, endangering human health. Therefore, it is of great significance to use efficient and economical methods to control organic pollutants in the water environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J35/08C02F1/72C02F101/38
CPCB01J27/043C02F1/725C02F2101/40C02F2101/38B01J35/51
Inventor 魏佳李佳美
Owner BEIJING UNIV OF TECH
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