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Method for preparing rod-shaped ferroferric oxide particle-carrying biochar composite material

A technology of ferric tetroxide and composite materials is applied in the field of preparation of biochar composite materials, which can solve the problems of easy agglomeration of particles and long consumption time, and achieve the effects of enhancing adsorption capacity, enhancing absorption rate and improving utilization efficiency.

Active Publication Date: 2018-12-18
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems that the existing method for preparing metal oxide particles loaded on the surface of biochar takes a long time and the particles are easy to agglomerate, and provides a method for preparing a rod-shaped iron ferric oxide particle-loaded biochar composite material

Method used

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  • Method for preparing rod-shaped ferroferric oxide particle-carrying biochar composite material
  • Method for preparing rod-shaped ferroferric oxide particle-carrying biochar composite material
  • Method for preparing rod-shaped ferroferric oxide particle-carrying biochar composite material

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specific Embodiment approach 1

[0032] Specific embodiment one: the preparation method of rod-shaped iron ferric oxide particle-loaded biochar composite material in this embodiment comprises the following steps:

[0033] 1. Electrochemically assisted modification and electrolysis of the mixture solution:

[0034] Shearing and pulverizing the biomass material, washing with distilled water for 3 to 10 times, drying at a temperature of 60°C to 90°C, and passing through a 20-mesh sieve to 100-mesh sieve after drying to obtain a finely divided powder of the biomass material;

[0035] Mix the finely divided biomass material powder with the metal salt solution to obtain a mixed solution, apply a voltage to the mixed solution with a DC stabilized power supply, stir and react at a stirring speed of 500r / min-1500r / min for 3min-15min, and obtain a solid-liquid mixture, Finally, the solid-liquid mixture is dried under vacuum conditions at 70°C to 100°C to obtain a dry mixture;

[0036] Wherein the concentration of the ...

specific Embodiment approach 2

[0039] Embodiment 2: This embodiment differs from Embodiment 1 in that the biomass material described in step 1 is one or a mixture of corn stalks, rice husks, sawdust, and bamboo stalks. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0040] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the metal salt solution described in step 1 is an iron salt solution. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for preparing a rod-shaped ferroferric oxide particle-carrying biochar composite material, and relates to a method for preparing a biochar composite material. The method is to solve the problems that the preparation method of the existing biochar carrying metal oxide particles on the surface consumes a long time and the particles are easy to conglomerate. The method comprises the following steps: I.Eelectrochemically performing modified electrolysis of a mixture solution Ccutting and pulverizing a biomass material, washing, drying, and then sieving to obtain finely crushed powder of the biomass material; mixing the finely crushed powder of the biomass material with a metal salt solution,applying a voltage to the mixture solution using a DC stabilized powersupply, stirring for reaction to obtain a solid-liquid mixture, and drying; II. Pplacing the dried mixture in a tube furnace, and heating for pyrolysis to obtain the ferroferric oxide particle-carrying biochar composite material. The method reduces the reaction time and enhances the adsorption capacity and absorption rate of the material. The invention is used for the removal of heavy metal ions in sewage.

Description

technical field [0001] The invention relates to a preparation method of a biochar composite material. Background technique [0002] Fe 3 o 4 As one of the representative magnetic materials, particles are widely used in the field of removing heavy metals in water due to their large specific surface area, high surface energy and easy preparation. However, usually Fe 3 o 4 Severe agglomeration of particles will occur, which further leads to the formation of larger particles, resulting in a significant decrease in reactivity and mobility. Therefore, Fe 3 o 4 Particles are limited in their range of applications. [0003] As a sustainable carbon source, biochar is widely used as an effective adsorbent for the removal of organic pollutants and heavy metal ions in water and soil environments due to its wide range of raw materials and low cost. Among them, the hierarchical porous structure is often considered as the main factor for the strong adsorption affinity of biochar to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01B32/324C01B32/348B01J20/20B01J20/02
CPCB01J20/0229B01J20/20C01B32/324C01B32/348C01G49/08C01P2002/72C01P2004/03C01P2004/04
Inventor 杨帆张帅帅杜庆宋景鹏
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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