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Preparation method for biomass charcoal adsorbent loaded with chitosan magnetic nanoparticles

A magnetic nanoparticle, chitosan-loaded technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to achieve the effect of reducing loss, stable quality, and large saturation magnetization

Inactive Publication Date: 2015-07-29
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of adsorbent based on biochar and loaded with chitosan magnetic nanoparticles has not been reported in the existing reports.

Method used

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  • Preparation method for biomass charcoal adsorbent loaded with chitosan magnetic nanoparticles
  • Preparation method for biomass charcoal adsorbent loaded with chitosan magnetic nanoparticles
  • Preparation method for biomass charcoal adsorbent loaded with chitosan magnetic nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Load chitosan magnetic nanoparticle biochar adsorbent, its preparation process is as follows:

[0028] (1) Preparation of biochar: dry the biomass (wood, agricultural waste, activated sludge sludge cake, etc.) After the temperature is stable, maintain it for 1 hour, take out the powder after cooling, and obtain powdery biochar;

[0029] (2) The configuration of chitosan-acetic acid solution: mix glacial acetic acid, chitosan and water, the dosage ratio of glacial acetic acid, chitosan and water is 2.5mL: 2.5g: 500mL, let it stand still, and the shell Polysaccharide-acetic acid solution;

[0030] (3) Preparation of iron solution: dissolve ferric chloride and ferrous sulfate in a small amount of water, the molar ratio of ferric chloride and ferrous sulfate is 2:1, and the solution is prepared and used immediately.

[0031] (4) Preparation of biochar adsorbent loaded with chitosan magnetic nanoparticles: mix a certain mass of powdered biochar with chitosan-acetic acid so...

Embodiment 2

[0040] Load chitosan magnetic nanoparticle biochar adsorbent, its preparation process is as follows:

[0041] (1) Preparation of biochar: dry the biomass (wood, agricultural waste, activated sludge sludge cake, etc.) After the temperature is stable, keep it for 0.5h, take out the powder after cooling, and then get the powdery biochar;

[0042] (2) Configuration of chitosan-acetic acid solution: mix glacial acetic acid, chitosan and water evenly, the dosage ratio of glacial acetic acid, chitosan and water is 5.0mL: 5.0g: 500mL, let it stand still to obtain shell Polysaccharide-acetic acid solution;

[0043] (3) Preparation of iron solution: Dissolve ferric chloride and ferrous sulfate in a small amount of water, the molar ratio of ferric chloride and ferrous sulfate is 3:1, and the solution is prepared and used immediately.

[0044](4) Preparation of biochar adsorbent loaded with chitosan magnetic nanoparticles: mix a certain mass of powdered biochar with chitosan-acetic acid...

Embodiment 3

[0048] Load chitosan magnetic nanoparticle biochar adsorbent, its preparation process is as follows:

[0049] (1) Preparation of biochar: dry the biomass (wood, agricultural waste, activated sludge sludge cake, etc.) After the temperature is stable, maintain it for 2.0 hours, take out the powder after cooling, and obtain powdery biochar;

[0050] (2) The configuration of chitosan-acetic acid solution: mix glacial acetic acid, chitosan and water, the dosage ratio of glacial acetic acid, chitosan and water is 1.0mL: 2.0g: 500mL, let it stand still, and the shell Polysaccharide-acetic acid solution;

[0051] (3) Preparation of iron solution: dissolve ferric chloride and ferrous sulfate in a small amount of water, the molar ratio of ferric chloride and ferrous sulfate is 1:1, and the solution is prepared and used immediately.

[0052] (4) Preparation of biochar adsorbent loaded with chitosan magnetic nanoparticles: mix a certain mass of powdered biochar with chitosan-acetic acid...

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Abstract

The invention provides a preparation method for a biomass charcoal adsorbent loaded with chitosan magnetic nanoparticles. The preparation method comprises the following steps: preparing biomass charcoal, preparing a chitosan-acetic acid solution, preparing an iron solution and preparing biomass charcoal loaded with the chitosan magnetic nanoparticles. The invention further provides the biomass charcoal adsorbent loaded with the chitosan magnetic nanoparticles. According to the adsorbent, the biomass charcoal is used as a base material and the surface of the adsorbent is loaded with the chitosan magnetic nanoparticles. The adsorbent prepared through the preparation method can adsorb heavy metal, dye and partial anions, and has the advantages of high adsorption capacity, strong magnetism, stable property and high mechanical performance.

Description

Technical field [0001] The invention belongs to the field of material science and environmental engineering, and relates to a composite adsorption material with good selectivity, good adsorption performance and reusability for heavy metal ions, dyes and some anions in groundwater and a preparation method thereof. In particular, it relates to a biomass-based composite adsorption material. A method for preparing an adsorbent using carbon as a base and surface-loaded chitosan ferric oxide nanoparticles. Background technique [0002] There are various substances in water bodies. Some substances require artificial treatment due to high natural background values. Some substances are difficult to use directly due to high concentrations of water pollutants due to artificial pollution. Among them, the most common pollutants in water bodies are heavy metals and dyes. ,PO 4 3- There are many kinds of removal and separation methods for anions, such as adsorption method, chemical preci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 陈卫万震刘成
Owner HOHAI UNIV
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