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Preparation method of iron and cyclodextrin co-modified biochar composite material

A composite material and cyclodextrin technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, water pollutants, etc., can solve the problem of hindering the adsorption and treatment effect of biochar/cyclodextrin Catalytic degradation of organic matter, affecting the effect of repeated use, etc., to achieve the effect of improving the performance of repeated use, good physical adsorption performance, and not easy to deintercalate

Inactive Publication Date: 2019-02-01
SHANDONG UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0005] However, biochar and β-cyclodextrin have a common shortcoming. Biochar and β-cyclodextrin lack catalytic degradation sites, and cannot catalyze the degradation of organic matter, resulting in adsorption on the surface of biochar / cyclodextrin materials. Organic pollutants block the pores and pores, which seriously hinders the adsorption treatment effect of biochar / cyclodextrin, and seriously affects the repeated use effect

Method used

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  • Preparation method of iron and cyclodextrin co-modified biochar composite material
  • Preparation method of iron and cyclodextrin co-modified biochar composite material
  • Preparation method of iron and cyclodextrin co-modified biochar composite material

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Effect test

Embodiment 1

[0044] The preparation method of iron, β-cyclodextrin co-modified biochar composite material, the steps are as follows:

[0045] (1) Weigh 0.5-15 grams of ferric chloride hexahydrate, 0.1-10 grams of sodium citrate, 0.1-30 grams of β-cyclodextrin and 0.1-30 grams of bamboo charcoal in a conical flask, pour 200mL of water, adjust the pH to 10 with ammonia water, dissolve at room temperature, stir, and react for 1.5h.

[0046] (2) Transfer to an autoclave again, react at a temperature of 100° C. and a pressure of 1.0 MPa for 24 hours, wash the prepared black solid with absolute ethanol and deionized water, and dry to obtain iron, β-cyclodextrin co- Modified biochar composites.

[0047] The Fourier transform infrared spectrum (FTIR) of the obtained iron and β-cyclodextrin co-modified biochar composites is as follows: figure 1 As shown, scanning electron microscopy (SEM) and elemental analysis are shown in Figure 2, by figure 1 , Figure 2, it can be seen that the method of the ...

Embodiment 2

[0050] Preparation method as described in Example 1, the difference is: step (1) replaces ferric chloride hexahydrate with ferric sulfate.

Embodiment 3

[0052] Preparation method as described in Example 1, the difference is: step (1) replaces ferric chloride hexahydrate with ferric nitrate.

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Abstract

The invention relates to a preparation method of an iron and cyclodextrin co-modified biochar composite material. According to the invention, beta-cyclodextrin and iron are introduced to the biochar surface to obtain the iron and beta-cyclodextrin co-modified biochar composite material. The material has good adsorption and catalytic degradation performance, and has adsorption and catalytic degradation performance on organic pollutants and heavy metals at the same time. The iron and beta-cyclodextrin co-modified biochar on the one hand enhances the water solubility of the material, and on the other hand increases the active sites of the material, thus greatly improving the adsorption and catalytic degradation performance.

Description

technical field [0001] The invention relates to a preparation method of a biochar composite material co-modified by iron and cyclodextrin, and belongs to the technical field of material synthesis. Background technique [0002] Water pollution is mainly divided into three major aspects: chemical pollution, physical pollution and biological pollution. Chemical pollutants mainly come from domestic sewage and industrial wastewater, which have the characteristics of complex composition, wide pollution range and difficult treatment. At present, the main components of chemical pollutants are inorganic toxic substances (such as copper, barium, chromium, selenium, vanadium and other heavy metals), organic toxic substances (such as various organic pesticides, polycyclic aromatic hydrocarbons, phenols, dyes, etc.), need Oxygen pollutants (such as organic substances such as carbohydrates, proteins, fats, lignin and phenols contained in domestic sewage, livestock sewage and some industri...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J31/28B01J20/30C02F1/00C02F1/28C02F101/10C02F101/12C02F101/20C02F101/32C02F101/34C02F101/36
CPCB01J20/0229B01J20/20B01J20/24B01J31/28C02F1/00C02F1/281C02F1/283C02F1/286C02F2101/103C02F2101/12C02F2101/20C02F2101/322C02F2101/345C02F2101/36
Inventor 占金华周晓君孔令帅
Owner SHANDONG UNIV
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