Method for preparing high-adsorption ceramsite by using biochar

A technology of high adsorption and biochar, applied in the direction of chemical instruments and methods, applications, household appliances, etc., can solve the problem of low adsorption, achieve the effect of simple and easy preparation process, enhance adsorption, and improve ion exchange capacity

Inactive Publication Date: 2019-11-19
SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of method that utilizes biochar to prepare highly adsorbable ceramsite, and the described method of utilizing biochar to prepare highly absorptively ceramsite should solve the problem of ceramsite in the prior art due to the pore structure. Technical issues with poor adsorption

Method used

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  • Method for preparing high-adsorption ceramsite by using biochar

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Embodiment 1

[0022] The method of a kind of highly adsorptive biochar ceramsite of the present embodiment, flow process is as follows figure 1 As shown, the specific steps are as follows:

[0023] 1. Waste treatment: Sampling biogas residue waste, drying, crushing, and passing through a 80-mesh sieve.

[0024] 2. Preparation of biochar: put the dried and pulverized biogas residue into a closed apparatus, make a homemade crucible, pyrolyze it in a muffle furnace at 450° C. for 4 hours, and cool it to room temperature to obtain biochar.

[0025] 3. Production of ceramsite embryo: choose biochar, biogas residue powder, kaolin powder, bentonite powder and dolomite powder and mix thoroughly, and the weight ratio is 3:2:3:9:3. Granulate through a disc granulator to obtain ceramsite embryos.

[0026] 4. Preparation of high-adsorption biochar ceramsite: put the ceramsite embryo into a muffle furnace, roast at 1000°C for 0.5h, cool down, and pulverize.

[0027] 5. The commercially available cera...

Embodiment 2

[0029] The method of a kind of highly adsorptive biochar ceramsite of the present embodiment, flow process is as follows figure 1 As shown, the specific steps are as follows:

[0030] 1. Waste treatment: Sampling rice husk waste, drying, crushing, and passing through 80-mesh sieve.

[0031] 2. Preparation of biochar: Put the dried and pulverized rice husk waste particles into a closed apparatus, make a crucible, and pyrolyze in a muffle furnace at 500°C for 3h, and cool to room temperature to obtain biochar.

[0032] 3. Production of ceramsite embryo: select biochar, kaolin powder, montmorillonite powder, bentonite powder, diatomite powder and dolomite powder and mix thoroughly, and the weight ratio is 2:2:8:5:1:1. Granulate through a disc granulator to obtain ceramsite embryos.

[0033] 4. Preparation of high-adsorption biochar ceramsite: put the ceramsite embryo into a muffle furnace, roast at 1100°C for 0.4h, cool down, and pulverize.

[0034] 5. Adsorb malodorous gas H ...

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Abstract

The invention discloses a method for preparing high-adsorption ceramsite by using biochar. The method comprises: drying biomass waste, crushing, carrying out oxygen limited pyrolysis for 1-5 h at a temperature of 200-600 DEG C, cooling to a room temperature to obtain biochar, completely mixing biochar and any one or more than two selected from biogas residue powder, kaolin powder, illite, chlorite, dolomite powder, biogas residue powder, montmorillonite, bentonite powder, diatomite powder and perlite powder, stirring, granulating, roasting for 0.1-3 h at a temperature of 500-1200 DEG C, cooling, breaking, and screening to obtain the high adsorption ceramsite. According to the present invention, the high-adsorption porous biochar ceramsite with stable chemical properties can be obtained bycarrying out mixed sintering on biochar, kaolin and the like; and with the method, the pore structure of ordinary ceramsite is optimized, the ion exchange capacity is improved, the adsorption of conventional ceramsite is enhanced, and the obtained product can be efficiently used in the fields of sewage treatment, soil improvement, environmental restoration and the like.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a highly adsorbable ceramsite, in particular to a method for preparing highly absorbable ceramsite by utilizing biochar. Background technique [0002] Ceramsite is a kind of artificial lightweight aggregate prepared by sintering or non-sintering process, which is made of natural clay mineral or solid waste as the main raw material, supplemented with a small amount of admixture to mix and granulate. The porous structure of ceramsite greatly enhances its adsorption capacity, and is often used in sewage treatment, soil remediation and other fields. [0003] Biochar (biochar) refers to the solid matter obtained by pyrolysis of biomass under anoxic or oxygen-limited conditions, which has the characteristics of high specific surface area, strong electron exchange, porous and rich carbonaceous components. Compared with naturally occurring carbon, it has a stronger adsorption capacity for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13C04B33/132C04B38/08B01J20/20B01J20/30
CPCB01J20/20C04B33/13C04B33/132C04B38/009C04B2235/321C04B2235/3418C04B2235/422C04B2235/656C04B2235/6567C04B38/08Y02P40/60
Inventor 梁晶陈平徐冰伍海兵张青青何小丽
Owner SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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