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Biomass carbon material and its preparation method and application

A biomass carbon and mixture technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of difficulty in popularization and high cost, and achieve the effect of fast removal rate, low cost and harm reduction.

Active Publication Date: 2021-04-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among the physical and chemical treatment methods, photocatalytic technology is currently the most researched. Although it can completely degrade antibiotics in water under light conditions through the addition of photocatalytic materials, it is difficult to popularize due to its high cost.

Method used

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  • Biomass carbon material and its preparation method and application
  • Biomass carbon material and its preparation method and application
  • Biomass carbon material and its preparation method and application

Examples

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preparation example Construction

[0032]

[0033] (1) Mix animal feces (as a precursor), molecular sieves (as a template) and distilled water evenly, and heat and stir until the water is dried to obtain a mixture, wherein the heating temperature is 80±5°C;

[0034] (2) Grind the mixture and transfer it to a porcelain boat, then put it into a tube furnace and heat it with nitrogen gas, then cool it to 25±5°C, soak it with hydrofluoric acid after cooling, and then wash it with water and ethanol in turn 4-6 times until neutral, and then dried in a vacuum oven to obtain a biomass carbon material.

[0035] Wherein, in step (1), the mass ratio of animal manure to molecular sieve can be 1:1-20:1, preferably 10:1.

[0036] In step (1), the heating temperature is preferably 80°C.

[0037] In step (1), the mass concentration of the mixture can be 0.2-1g / mL.

[0038] In step (1), the animal feces can be deer dung; the pH value can be 4-10, preferably 7; the moisture content can be 4-9%, preferably 4%.

[0039] In st...

Embodiment 1

[0057] The preparation method of the biomass carbon material of the present embodiment comprises the following steps:

[0058] (1) Add 40g of deer dung (pH value is 7, moisture content is 4%) to 4g mesoporous molecular sieve SBA‐15 (pore diameter is 6nm, specific surface area is 800m 2 / g, the pore volume is 2cm 3 / g, the adsorption capacity is 25mg / g), then add 150mL distilled water and mix evenly, and heat and stir until the water is dried to obtain the mixture, wherein the heating temperature is 80°C;

[0059] (2), transfer the mixture to a porcelain boat after grinding, then put it into a tube furnace and heat it to 500°C at a rate of 5°C / min with nitrogen gas, the heating time is 1h, and naturally cool to 25°C. After cooling and taking it out, soak it with 20wt% hydrofluoric acid for 24 hours, then wash it with water and ethanol four times until neutral, then put it in a vacuum box (60°C) and dry it to obtain a biomass carbon material.

[0060] Wherein, in step (1), the...

Embodiment 2

[0067] The preparation method of the biomass carbon material of the present embodiment comprises the following steps:

[0068] (1) Add 40g of deer dung (pH value is 7, moisture content is 4%) to 4g mesoporous molecular sieve SBA‐15 (pore diameter is 6nm, specific surface area is 800m 2 / g, the pore volume is 2cm 3 / g, the adsorption capacity is 25mg / g), then add 150mL distilled water and mix evenly, and heat and stir until the water is dried to obtain the mixture, wherein the heating temperature is 80°C;

[0069] (2), transfer the mixture to a porcelain boat after being ground, then put it into a tube furnace and heat it to 600°C at a rate of 5°C / min with nitrogen gas, the heating time is 1h, and naturally cool to 25°C. After cooling and taking it out, soak it with 20wt% hydrofluoric acid for 24 hours, then wash it with water and ethanol four times until neutral, then put it in a vacuum box (60°C) and dry it to obtain a biomass carbon material.

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Abstract

The invention provides a biomass carbon material and its preparation method and application. The preparation method comprises: mixing deer dung and molecular sieves in water to obtain a mixture; heating the mixture under the protection of nitrogen to obtain a biomass carbon material through treatment. The biomass carbon material can be applied in removing tetracycline hydrochloride from water. The biomass carbon material prepared by the present invention can absorb and catalyze the oxidative degradation of tetracycline hydrochloride in water, and has the advantages of good removal effect, fast removal rate and environmental friendliness. Therefore, it can be applied to the rapid and efficient degradation of tetracycline hydrochloride-rich water; In addition, the preparation method of the present invention has the advantages of simple process, low cost, high yield and short cycle, and can be applied to large-scale industrial production of biomass carbon materials.

Description

technical field [0001] The invention belongs to the technical field of biomass carbon materials and environmental applications, and in particular relates to a biomass carbon material and its preparation method and application. Background technique [0002] In recent years, due to the abuse and irregular discharge of antibiotics, antibiotics have caused serious pollution to both surface water and groundwater. Due to the current immature treatment process for antibiotics, antibiotics in the environment have caused serious damage to human health and economic society. Hazards, therefore, need to be treated by physicochemical treatment or biological treatment. [0003] Due to the influence of biological characteristics, biological treatment shows the disadvantage of poor tolerance, and it is difficult to achieve good results in antibiotic treatment. Therefore, the use of physical and chemical treatment has become a hot spot for development. Among the physical and chemical treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J29/03C02F1/28C02F1/72B01J20/30C02F101/36
CPCB01J20/18B01J20/20B01J29/0308C02F1/281C02F1/283C02F1/725C02F2101/36
Inventor 严媛媛陈旭涛黄宇轩王峰黄宇骏冯雷雨
Owner TONGJI UNIV
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