Porous carbon material for treating organic dye and fluoride-containing waste water, 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: 2018-02-23
FUZHOU UNIVERSITY
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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 plaqu

Method used

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  • Porous carbon material for treating organic dye and fluoride-containing waste water, and preparation method thereof
  • Porous carbon material for treating organic dye and fluoride-containing waste water, and preparation method thereof
  • Porous carbon material for treating organic dye and fluoride-containing waste water, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] Dissolve 1 g of polyvinyl alcohol in 10 g of deionized water, heat and stir to dissolve, and 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, and heat and stir to dissolve to obtain Chitosan aqueous solution; stirring and mixing the obtained chitosan aqueous solution and polyvinyl alcohol aqueous solution, and then adding 20 mL, 10 wt% glutaraldehyde aqueous solution for crosslinking to obtain polyvinyl alcohol / chitosan hydrogel; polyvinyl alcohol After freeze-drying, the chitosan hydrogel was sent to a tube furnace for carbonization at 700 °C under a nitrogen atmosphere for 2 h to obtain a carbon aerogel. The carbon aerogel was added to a 1 M dilute hydrochloric acid solution for immersion. 2h, rinsed repeatedly with absolute ethanol, and dried to constant weight to obtain a porous carbon material.

[0022] The surface morphology of the as-prepared porous carbon ...

Example Embodiment

[0023] Example 2

[0024] Dissolve 1 g of polyvinyl alcohol in 10 g of deionized water, heat and stir to dissolve, and 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, and heat and stir to dissolve to obtain Chitosan aqueous solution; stirring and mixing the obtained chitosan aqueous solution and polyvinyl alcohol aqueous solution, and then adding 20 mL, 10 wt% glutaraldehyde aqueous solution for crosslinking to obtain polyvinyl alcohol / chitosan hydrogel; polyvinyl alcohol / Chitosan hydrogel was freeze-dried, then sent to a tube furnace, carbonized at 600 °C under nitrogen atmosphere for 2 h at high temperature to obtain carbon aerogel, which was added to 1 M dilute hydrochloric acid solution for immersion 2h, rinsed repeatedly with absolute ethanol, and dried to constant weight to obtain a porous carbon material.

Example Embodiment

[0025] Example 3

[0026] Dissolve 1 g of polyvinyl alcohol in 10 g of deionized water, heat and stir to dissolve, and 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, and heat and stir to dissolve to obtain Chitosan aqueous solution; stirring and mixing the obtained chitosan aqueous solution and polyvinyl alcohol aqueous solution, and then adding 30 mL, 10 wt% glutaraldehyde aqueous solution for crosslinking to obtain polyvinyl alcohol / chitosan hydrogel; polyvinyl alcohol / Chitosan hydrogel was freeze-dried, then sent to a tube furnace, carbonized at 600 °C under nitrogen atmosphere for 2 h at high temperature to obtain carbon aerogel, which was added to 1 M dilute hydrochloric acid solution for immersion 2h, rinsed repeatedly with absolute ethanol, and dried to constant weight to obtain a porous carbon material.

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PUM

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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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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 UNIVERSITY
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