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
CN110467429AInactive Publication Date: 2019-11-19SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
Publication Date
2019-11-19
Estimated Expiration
Not applicable · inactive patent

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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.
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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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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