Preparation method of biological carbon having high adsorption capacity to antibiotics

A technology of biochar and high adsorption, which is applied in the direction of biofuel, chemical instruments and methods, adsorption water/sewage treatment, etc., to achieve the effect of low cost, high reuse rate, and increased effective pore ratio

Active Publication Date: 2017-05-31
SHAOXING UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] In view of the above-mentioned problems existing in the existing water body antibiotic pollution adsorption treatment technology, the application provides a biochar preparation method with high adsorption ca

Method used

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  • Preparation method of biological carbon having high adsorption capacity to antibiotics
  • Preparation method of biological carbon having high adsorption capacity to antibiotics
  • Preparation method of biological carbon having high adsorption capacity to antibiotics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0024] Example 1-8: Effects of different pyrolysis atmospheres on the effective pore ratio of biochar using sawdust as raw material

[0025] Using sawdust as biomass raw material to compare different pyrolysis atmospheres, take 10g of sawdust, put it into a box-type pyrolysis furnace, and carry out pyrolysis in a mixed atmosphere of nitrogen and air. The pyrolysis temperature is 600°C, and the pyrolysis time is 6h. The obtained solid pyrolysis product was put into 60mL of hydrogen peroxide solution containing 5g of activated alumina balls (1-3mm in particle size) with a mass concentration of 15%. After stirring and mixing at room temperature for 8 hours, the activated alumina balls were taken out and the solid product was filtered out. , washed with water, and dried at 105°C to obtain a finished product. The specific surface area and pore structure of the prepared biochar sample were tested by a specific surface area and pore size analyzer. Refer to the general test method in ...

Embodiment 9-16

[0028] Examples 9-16: Effects of different pyrolysis atmospheres on the effective pore ratio of biochar using cow dung as raw material

[0029] Weigh 10g of cow dung as the biomass raw material, put it into a tubular pyrolysis furnace, pass into a mixed atmosphere of nitrogen and air, heat it up to 800°C and keep it warm for 3h, and put the resulting solid pyrolysis product into a ball containing 3g of activated alumina ( In 50mL of hydrogen peroxide solution with a mass concentration of 10% in particle diameter (2-4mm), after stirring and mixing at room temperature for 12 hours, the activated alumina balls were taken out, the solid product was filtered out, washed with water, and dried at 95°C to obtain the finished product. The prepared biochar sample adopts the total specific surface area, the effective pore (1.7~50nm) specific surface area, the effective pore ratio of the effective pore specific surface area to the total specific surface area, and the biochar product yield ...

Embodiment 17-24

[0033] Examples 17-24: Effects of different pyrolysis atmospheres on the effective pore ratio of biochar using corn stalks as raw materials

[0034] Weigh 10 g of corn stalks as the biomass raw material, put it into a tubular pyrolysis furnace, introduce a mixed atmosphere of nitrogen and air, heat it up to 700 °C and keep it warm for 4 hours, and put the obtained solid pyrolysis product into a ball containing 4 g of activated alumina ( In 80mL hydrogen peroxide solution with a particle size of 1-3mm) and a mass concentration of 5%, after stirring and mixing at room temperature for 36 hours, the activated alumina balls were taken out, the solid product was filtered out, washed with water, and dried at 95°C to obtain the finished product. The prepared biochar sample adopts the total specific surface area, the effective pore (1.7~50nm) specific surface area, the effective pore ratio of the effective pore specific surface area to the total specific surface area, and the biochar pr...

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Abstract

The invention relates to a preparation method of biological carbon having a high adsorption capacity to antibiotics, and belongs to the technical field of chemical or physical methods. The preparation method comprises the following steps: putting biomass raw materials into a box type or pipe type pyrolyzing furnace, pyrolyzing the biomass raw materials in a mixed atmosphere of nitrogen and air in a certain volume ratio for a period of time, putting obtained solid pyrolysis products in hydrogen peroxide solution containing a moderate amount of activated aluminum oxide balls, mixing at a room temperature for a certain period of time, taking out the activated aluminum oxide balls, filtering out solid products, and washing and drying the solid products to obtain biological carbon products. The biological carbon products can be applied to adsorbing and treating antibiotic contaminants in water body, and has the advantages of high adsorption efficiency, low cost and the like.

Description

technical field [0001] The invention relates to a method for preparing biochar with high adsorption capacity for antibiotics, and belongs to the technical field of pollutant chemical or physical treatment methods. Background technique [0002] In recent years, antibiotic pollution of water bodies has become an important environmental issue that has attracted widespread public concern. The development of effective antibiotic pollution prevention and control technologies has important social significance and application prospects. Among them, the adsorption treatment technology has the characteristics of simple operation and stable operation, and has been widely used in the treatment of polluted wastewater. [0003] Biochar is a stable black porous solid obtained by pyrolysis (processing temperature is generally 300-800°C) using some low-value biomass raw materials or agricultural, forestry, and aquaculture residues. Conventional pyrolysis The process is usually carried out i...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C10B53/02C02F1/28
CPCB01J20/20C02F1/283C10B53/02Y02E50/10
Inventor 李建法黄茹梦李春艳何泓亮吕金红李益民
Owner SHAOXING UNIVERSITY
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