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A kind of porous carbon material for organic dye and fluorine-containing wastewater treatment and preparation method thereof

A porous carbon material, wastewater treatment technology, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc. Effect

Inactive Publication Date: 2019-08-09
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, long-term drinking of water with a fluoride concentration > 1.0 mg / L is prone to dental plaque, and long-term drinking of water with a fluoride concentration > 4.0 mg / L can lead to bone fluorosis

Method used

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  • A kind of porous carbon material for organic dye and fluorine-containing wastewater treatment and preparation method thereof
  • A kind of porous carbon material for organic dye and fluorine-containing wastewater treatment and preparation method thereof
  • A kind of porous carbon material for organic dye and fluorine-containing wastewater treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Take 1 g of polyvinyl alcohol and dissolve it in 10 g of deionized water, heat and stir to dissolve to obtain an aqueous solution of polyvinyl alcohol; take 1 g of chitosan and 3 g of aluminum chloride, add them to 96 g of deionized water, heat and stir to dissolve, and obtain Chitosan aqueous solution; Stir and mix the obtained chitosan aqueous solution and polyvinyl alcohol aqueous solution, and then add 20 mL, 10 wt% glutaraldehyde aqueous solution to cross-link to obtain polyvinyl alcohol / chitosan hydrogel; polyvinyl alcohol / Chitosan hydrogel is freeze-dried, then sent to a tube furnace, and carbonized at 700 °C under a nitrogen atmosphere for 2 hours to obtain carbon aerogels, which are added to 1 M dilute hydrochloric acid solution for soaking 2 h, then rinsed repeatedly with absolute ethanol, and dried to constant weight to obtain a porous carbon material.

[0022] The surface morphology of the prepared porous carbon material is shown in figure 1 shown.

Embodiment 2

[0024] Take 1 g of polyvinyl alcohol and dissolve it in 10 g of deionized water, heat and stir to dissolve to obtain an aqueous solution of polyvinyl alcohol; take 1 g of chitosan and 3 g of aluminum chloride, add them to 96 g of deionized water, heat and stir to dissolve, and obtain Chitosan aqueous solution; Stir and mix the obtained chitosan aqueous solution and polyvinyl alcohol aqueous solution, and then add 20 mL, 10 wt% glutaraldehyde aqueous solution to cross-link to obtain polyvinyl alcohol / chitosan hydrogel; polyvinyl alcohol / Chitosan hydrogel is freeze-dried, then put into a tube furnace, and carbonized at 600 ℃ under a nitrogen atmosphere for 2 hours to obtain a carbon aerogel, which is added to a 1 M dilute hydrochloric acid solution for soaking 2 h, then rinsed repeatedly with absolute ethanol, and dried to constant weight to obtain a porous carbon material.

Embodiment 3

[0026] Take 1 g of polyvinyl alcohol and dissolve it in 10 g of deionized water, heat and stir to dissolve to obtain an aqueous solution of polyvinyl alcohol; take 2 g of chitosan and 3 g of aluminum chloride, add them to 95 g of deionized water, heat and stir to dissolve, and obtain chitosan aqueous solution; the obtained chitosan aqueous solution and polyvinyl alcohol aqueous solution were stirred and mixed, and then 30 mL, 10 wt% glutaraldehyde aqueous solution was added for cross-linking to obtain polyvinyl alcohol / chitosan hydrogel; polyvinyl alcohol / Chitosan hydrogel is freeze-dried, then put into a tube furnace, and carbonized at 600 ℃ under a nitrogen atmosphere for 2 hours to obtain a carbon aerogel, which is added to a 1 M dilute hydrochloric acid solution for soaking 2 h, then rinsed repeatedly with absolute ethanol, and dried to constant weight to obtain a porous carbon material.

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Abstract

The invention discloses a porous carbon material for treating organic dye and fluoride-containing waste water, and a preparation method thereof. The preparation method comprises the following steps: by taking polyvinyl alcohol and chitosan as a carbon source, dissolving respectively with deionized water and aluminum chloride water solution, blending the two solutions, adding glutaraldehyde for crosslinking, to obtain polyvinyl alcohol / chitosan hydrogel, freeze-drying to obtain an aerogel, then sequentially performing high-temperature carbonization, and soaking with diluted acid solution, to obtain the porous carbon material. The obtained porous carbon material has high adsorption performance to methyl orange and other dye molecules and fluorine ions, and can be used for removing organic dye and fluorine ions from waste water.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a porous carbon material used for treating organic dyes and fluorine-containing wastewater and a preparation method thereof. Background technique [0002] High organic content, high chroma, high toxicity and complex water quality are the characteristics of printing and dyeing wastewater. If it is discharged directly, it will cause serious pollution to the environment. At present, there are many kinds of organic dye removal methods, such as chemical coagulation method, biochemical method, electrochemical method, oxidation method, biological treatment method, adsorption method and so on. However, these methods have some problems that cannot be ignored, such as low removal efficiency, high cost, and the impact of the material itself on the environment, etc., which are limited in practical application. Among these methods, the adsorption method has the simplest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/20C02F1/28C02F101/14C02F101/30C02F101/34C02F101/38
CPCB01J20/20C02F1/283C02F2101/14C02F2101/308C02F2101/34C02F2101/38
Inventor 江献财向晓彤林臻胡海凤张星侯琳熙
Owner FUZHOU UNIV