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Magnetic phosphoric acid activated bamboo charcoal composite material and preparation process thereof

A phosphoric acid activation, composite material technology, applied in the direction of carbon compounds, inorganic chemistry, other chemical processes, etc., can solve the problems of material collection and reprocessing, and achieve the effects of low preparation cost, abundant raw materials, and good magnetic permeability

Active Publication Date: 2021-06-29
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, there are still deficiencies: bamboo fiber has been widely used in various fields as a natural green material, among which various types of bamboo fiber are used as the main material for composite modification to carry out research on the treatment of heavy metal polluted waters, but compared with traditional adsorption With the increase in feeding, there are certain problems in the subsequent collection and reprocessing of the completely adsorbed materials

Method used

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  • Magnetic phosphoric acid activated bamboo charcoal composite material and preparation process thereof
  • Magnetic phosphoric acid activated bamboo charcoal composite material and preparation process thereof
  • Magnetic phosphoric acid activated bamboo charcoal composite material and preparation process thereof

Examples

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Effect test

Embodiment 1

[0042] Weigh 0.2g (NH 4 ) 2 S 2 o 8 , dissolved in 20ml of phosphoric acid (mass fraction 50%), then added 4g of natural bamboo powder, stirred and soaked for 12h; filtered off the raffinate, the phosphorylated natural bamboo powder was placed in a tube furnace, fed with nitrogen, and heated at 5°C Heat up at 250°C for 1.5h, then rapidly raise the temperature to 500°C, hold for 2.5h, take it out after cooling down, wash, dry and grind to prepare phosphoric acid activated bamboo charcoal.

Embodiment 2

[0044] Weigh 0.2g (NH 4 ) 2 S 2 o 8, dissolved in 20ml of phosphoric acid (mass fraction 50%), then add 8g of natural bamboo powder, stir and soak for 12h; Heat up at 250°C for 2 hours, then rapidly raise the temperature to 500°C, hold for 2.5 hours, take it out after cooling down, wash, dry and grind to prepare phosphoric acid activated bamboo charcoal.

Embodiment 3

[0046] Weigh 0.4g (NH 4 ) 2 S 2 o 8 , dissolved in 20ml of phosphoric acid (mass fraction 50%), then add 8g of natural bamboo powder, stir and soak for 12h; Heat up at 250°C for 2 hours, then rapidly raise the temperature to 500°C, hold for 2.5 hours, take it out after cooling down, wash, dry and grind to prepare phosphoric acid activated bamboo charcoal.

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Abstract

The invention discloses a magnetic phosphoric acid activated bamboo charcoal composite material and a preparation process thereof, and belongs to the field of new sewage treatment and repair materials. The preparation process comprises the following steps: adopting a hydrothermal method, adding an iron source, taking natural bamboo fibers as a matrix material, taking phosphoric acid as a medium, performing high-temperature pyrolysis carbonization under an anaerobic condition to prepare phosphoric acid activated bamboo charcoal, weighing the phosphorylated bamboo charcoal, adding a dispersing agent, sodium citrate and a reducing agent, uniformly mixing, and reacting in a reaction kettle to prepare a magnetic phosphoric acid activated bamboo charcoal composite material. According to the invention, the main raw material is derived from bamboo fibers of bamboo wastes, and the raw material is rich, easy to obtain, low in price and renewable; the preparation method is simple, convenient and low in preparation cost; and the prepared composite material has good magnetic conductivity, and heavy metal can be recycled by using the magnetic property.

Description

technical field [0001] The invention relates to the field of new materials for water pollution treatment and restoration, in particular to a magnetic phosphoric acid activated bamboo charcoal composite material and a preparation process thereof. Background technique [0002] With the development and utilization of nuclear energy, once a considerable number of nuclides in radioactive wastewater are activated and migrated, they will pose a serious threat to the ecological environment. It has teratogenic and carcinogenic effects and needs to be dealt with in time. Therefore, in view of the strong pollution and toxicity of radioactive wastewater, its treatment is of great significance. [0003] Biochar and its derivatives are a well-known class of carbon materials with excellent physical and chemical properties and diverse surface functionality. Biochar is used as a supporting material, mixed with other materials or other metal elements for catalysis, adsorption, etc., and It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/342B01J20/02B01J20/20B01J20/30C02F1/28C02F1/62
CPCC01B32/318C01B32/342B01J20/20B01J20/0229B01J20/30C02F1/283C02F1/62
Inventor 于涛杨俊
Owner EAST CHINA UNIV OF TECH