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Composite activated carbon prepared from harmful algal blooms and tire powder and preparation method thereof

A technology of composite activated carbon and tire powder, which is applied in the direction of chemical instruments and methods, applications, carbon compounds, etc., can solve the problems of unsatisfactory and efficient removal of heavy metal ions, unstable carbon structure, and limited adsorption capacity, etc., to achieve cheap heavy metal pollution, High practical value, excellent adsorption performance

Active Publication Date: 2021-03-05
李立欣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) The existing technology of using algae to prepare activated carbon has problems such as complex process, high energy consumption, and unstable carbon structure.
[0008] (2) The existing methods for the treatment of algal blooms have high cost and mediocre effects, and some of them will cause secondary pollution, and the algal blooms are not fully utilized, wasting resources
[0009] (3) The traditional soil heavy metal removal process cannot fully meet the needs of actual treatment. The existing activated carbon prepared from biomass has problems such as poor stability and limited adsorption capacity when applied to adsorb heavy metals in soil.
Relying on the development of new materials, the new technology has high cost and poor environmental adaptability, which cannot meet the requirements of stable and efficient removal of heavy metal ions under complex environmental conditions.

Method used

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  • Composite activated carbon prepared from harmful algal blooms and tire powder and preparation method thereof
  • Composite activated carbon prepared from harmful algal blooms and tire powder and preparation method thereof
  • Composite activated carbon prepared from harmful algal blooms and tire powder and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0055] (1) Wash the algal blooms and remove impurities, and dry them with potassium hydroxide, urea, and thiourea respectively to constant weight, send them into a pulverizer for pulverization, and then pass through a 100-mesh sieve for sieving;

[0056] (2) Washing and removing impurities from the discarded tires, drying them, sending them into a pulverizer for pulverization, and sieving through a 60-mesh sieve to obtain tire powder;

[0057] (3) Proportioning the sieved bloom algae particles, tire powder, potassium hydroxide, urea, and thiourea in a mass ratio of 3:3:3:1:1, first dissolve potassium hydroxide, urea, and urea with 25ml of distilled water. Thiourea, then mix algal bloom particles, tire powder and the solution, mix and impregnate in a shaker at 180r / min for 12 hours, after impregnation, put the mixed solution in an oven at 60°C and dry to constant weight;

[0058] (4) Carbonize the dry mixed sample in a tube furnace at 700°C under an inert atmosphere for 90 minu...

Embodiment 2

[0063] (1) Wash the algal blooms and remove impurities, and dry them with potassium hydroxide and thiourea respectively to constant weight, send them into a pulverizer for pulverization, and pass through a 100-mesh sieve for sieving;

[0064] (2) Washing and removing impurities from the discarded tires, drying them, sending them into a pulverizer for pulverization, and sieving through a 60-mesh sieve to obtain tire powder;

[0065] (3) Proportioning the sieved bloom algae particles, tire powder, potassium hydroxide, and thiourea in a mass ratio of 3:3:3:0.5, dissolve potassium hydroxide and thiourea with 25ml of distilled water, and then Mix Huazao particles, tire powder and the solution, mix and impregnate in a 180r / min shaker for 12 hours, after impregnation, put the mixed solution in an oven at 60°C and dry to constant weight;

[0066] (4) Carbonize the dry mixed sample in a tube furnace at 700°C under an inert atmosphere for 90 minutes;

[0067] (5) After carbonization, c...

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Abstract

The invention belongs to the technical field of waste recycling, and discloses a composite activated carbon prepared by using harmful algal blooms and tire powder and a preparation method. The algae and tire powder are dried and mixed, and then mixed with potassium hydroxide, urea, and thiourea. The solution is mixed and impregnated, and after drying, it is activated and carbonized at high temperature. Potassium hydroxide, urea, and thiourea are used to activate it to form pores. The tire powder can further supplement the carbon source and improve the stability of the activated carbon. The invention provides a method for preparing composite activated carbon by using harmful algal blooms and tire powder. The prepared composite activated carbon has good adsorption performance, large adsorption capacity and excellent adsorption performance for soil heavy metal pollutants. The activated carbon prepared by the invention can be applied to adsorb heavy metals in soil and be used for repairing heavy metal polluted soil, and has the advantages of strong adsorption capacity, large adsorption capacity and strong environmental adaptability.

Description

technical field [0001] The invention belongs to the technical field of waste recycling, and in particular relates to a composite activated carbon prepared by using harmful algal blooms and tire powder and a preparation method thereof. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Water bloom refers to the pollution of freshwater ponds, rivers, lakes, reservoirs and other water bodies, and the large increase of nutrients such as nitrogen and phosphorus, resulting in eutrophication or severe eutrophication of the water body. Bloom algae reproduce explosively, causing obvious changes in water color, and forming green or other colored floating objects on the water surface, causing water hypoxia and causing aquatic animals to suffocate and die. In addition, some algae blooms can produce toxins. Among them, Microcystis aeruginosa is the most widely distributed, and the microcystin produced by it is the m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/324C01B32/348B01J20/20B01J20/30C09K17/02
CPCB01J20/20B01J2220/4843B01J2220/4893C09K17/02C01B32/324C01B32/348
Inventor 李立欣梁陶婕
Owner 李立欣
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