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Steel-slag-based biomass activated carbon for degrading formaldehyde and preparation method of activated carbon

A technology of activated carbon and biomass, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of unfavorable ecological environment sustainable development, secondary pollution of indoor environment, short service life of activated carbon, etc., to promote sustainable development. Development, short service life, and the effect of reducing production costs

Inactive Publication Date: 2019-05-10
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that on the one hand, activated carbon is generally prepared by wood and bamboo, which leads to high cost and is not conducive to the sustainable development of the ecological environment; on the other hand, the service life of activated carbon is short, which easily causes secondary pollution of the indoor environment; and the use of metal oxides Modification of activated carbon can improve the service life of activated carbon and the performance of formaldehyde degradation, but it will lead to the problem of increased preparation cost

Method used

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  • Steel-slag-based biomass activated carbon for degrading formaldehyde and preparation method of activated carbon
  • Steel-slag-based biomass activated carbon for degrading formaldehyde and preparation method of activated carbon
  • Steel-slag-based biomass activated carbon for degrading formaldehyde and preparation method of activated carbon

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0028]

[0029] The biomass waste is fruit shell; the steel slag is electric furnace slag; the steel slag composite grinding aid is a mixture of ethylene glycol, triethanolamine and absolute ethanol, and the quality of ethylene glycol, triethanolamine and absolute ethanol The ratio is 1:1:1, wherein ethylene glycol, triethanolamine and absolute ethanol are analytically pure; the phosphoric acid is analytically pure; the absolute ethanol is analytically pure; the hydrochloric acid is analytically pure; the water for deionized water.

[0030] Firstly, after cleaning and drying the biomass waste, use a frequency conversion planetary ball mill to grind at a speed of 500r / min for 45min to obtain biomass waste micropowder; after mixing steel slag and steel slag compound grinding aid, use a frequency conversion planetary ball mill Grind for 9...

Embodiment 2

[0034] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0035]

[0036] The biomass waste is straw; the steel slag is hot stuffy slag; the steel slag composite grinding aid is a mixture of ethylene glycol, triethanolamine and absolute ethanol, and the mass of ethylene glycol, triethanolamine and absolute ethanol The ratio is 1:1:1, wherein ethylene glycol, triethanolamine and absolute ethanol are analytically pure; the phosphoric acid is analytically pure; the absolute ethanol is analytically pure; the hydrochloric acid is analytically pure; the water for deionized water.

[0037]First, after cleaning and drying the biomass waste, use a frequency conversion planetary ball mill to grind 90min at a speed of 600r / min to obtain biomass waste micropowder; after mixing steel slag and steel slag compound grinding aid, use a frequency conversion planetary ball mill Grinding for 105min at a rotation...

Embodiment 3

[0041] Taking the preparation of product 100g of the present invention as an example, the components used and their mass proportions are:

[0042]

[0043] The biomass waste is fruit stone; the steel slag is wind crushed slag; the steel slag composite grinding aid is a mixture of ethylene glycol, triethanolamine and absolute ethanol, and the mixture of ethylene glycol, triethanolamine and absolute ethanol The mass ratio is 1:1:1, wherein ethylene glycol, triethanolamine and absolute ethanol are analytically pure; the phosphoric acid is analytically pure; the absolute ethanol is analytically pure; the hydrochloric acid is analytically pure; the Water is deionized water.

[0044] First, after cleaning and drying the biomass waste, use a frequency conversion planetary ball mill to grind at a speed of 400r / min for 75min to obtain biomass waste fine powder; after mixing steel slag and steel slag compound grinding aid, use a frequency conversion planetary ball mill Grind for 60 ...

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Abstract

The invention discloses steel-slag-based biomass activated carbon for degrading formaldehyde and a preparation method of the activated carbon, and belongs to the field of solid waste utilization. Thesteel-slag-based biomass activated carbon comprises biomass waste, steel slag, steel slag compound grinding aids, phosphoric acid, absolute ethyl alcohol, hydrochloric acid and water. The biomass waste includes one or more of fruit shells, fruit kernels and straws, and the steel slag includes one or more of heat stuffy slag, electric furnace slag and wind chopped slag. The steel slag and the biomass waste are compounded to prepare the steel-slag-based biomass activated carbon, the biomass waste is modified by metallic oxide in the steel slag, high value-added application of the steel slag andthe biomass waste is widened, and a new idea of 'danger control by waste' is achieved. Compared with a current technique of physically mixing steel slag and activated carbon to modify the activated carbon, a grind-aiding technique and a chemical combination technique are combined, and the performance and stability of the steel-slag-based biomass activated carbon are greatly improved.

Description

technical field [0001] The invention belongs to the field of solid waste resources utilization, and in particular relates to a steel slag-based biomass activated carbon obtained by grinding biomass waste and steel slag and modifying the biomass waste fine powder with steel slag powder. Background technique [0002] About 80% of people's life is spent indoors, so the indoor environment is the place where people are most frequently in contact with, and the quality of the air quality will directly affect the health of the people who live there. At present, with people's requirements for building thermal insulation performance and interior decoration beautification, the concentration of volatile organic compounds in the indoor environment has increased, leading to increasingly serious problems with indoor air quality. The focus of quality. [0003] Activated carbon is a carbonaceous material with developed porous structure and rich specific surface area, which is widely used in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/342
Inventor 张浩张磊龙红明刘秀玉唐刚黄新杰
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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