A method of using oil shale semi-coke to prepare hybrid antibacterial agent

A technology of oil shale semi-coke and antibacterial agent, which is applied in the field of waste recycling and functional materials, can solve the problems of soil and environmental hazards, semi-coke occupying a large amount of land, etc., achieve excellent antibacterial performance, reduce product cost, and broaden the scope of production. Effects in Industrial Applications

Active Publication Date: 2021-07-13
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The semi-coke after pyrolysis of oil shale at 300~700℃ accounts for more than 90% of the total oil shale. The semi-coke not only occupies a large amount of land, but also has been stacked in the open air for a long time. serious harm to the environment

Method used

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  • A method of using oil shale semi-coke to prepare hybrid antibacterial agent
  • A method of using oil shale semi-coke to prepare hybrid antibacterial agent
  • A method of using oil shale semi-coke to prepare hybrid antibacterial agent

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Prepare semi-coke slurry with a mass fraction of 15% under mechanical stirring, and filter after stirring for 30 minutes to remove the quartz sand in the slurry; then add zinc nitrate with a mass fraction of 35% semi-coke to the slurry, and then add zinc nitrate with a mass percentage concentration of 35%. Sodium hydroxide solution until the pH value of the system is close to 8; after continuous stirring for 30 minutes, use a filter press for solid-liquid separation; then disperse the filter cake in water with a solid-to-liquid ratio of 1:10, and carry out pressure filtration after continuous stirring for 60 minutes until The moisture content of the filter cake is 50%; the filter cake is processed into 4mm thin slices by rollers, and then placed in a dynamic calciner at 400°C for 4 hours, then pulverized, passed through a 200-mesh sieve, and packaged.

Embodiment 2

[0036] Prepare a semi-coke slurry with a mass fraction of 20% under mechanical stirring, and filter after stirring for 30 minutes to remove the quartz sand in the slurry; then add zinc sulfate with a mass fraction of 20% semi-coke to the slurry, and then add 15% concentration of Sodium carbonate solution until the pH value of the system is close to 8; after continuous stirring for 30 minutes, use a filter press for solid-liquid separation; then disperse the filter cake in water with a solid-to-liquid ratio of 1:10, and press filter after continuous stirring for 60 minutes until the filter press The moisture content of the cake is 50%; the filter cake is processed into 3mm thin slices by rollers, and then placed in a dynamic calciner at 500°C for 3 hours, then crushed, passed through a 200-mesh sieve, and packaged.

Embodiment 3

[0038] Prepare semi-coke slurry with a mass fraction of 10% under mechanical stirring, and filter after stirring for 30 minutes to remove the quartz sand in the slurry; then add zinc acetate with a mass fraction of 30% semi-coke to the slurry, and then add 25% concentration of A mixed solution of sodium carbonate and sodium bicarbonate (mass ratio 8:2) until the pH of the system is close to 8; after continuous stirring for 30 minutes, use a filter press for solid-liquid separation; then disperse the filter cake at a solid-liquid ratio of 1:10 After stirring continuously for 60 minutes, press filter until the water content of the filter cake is 50%; the filter cake is processed into 3mm thin slices on rollers, and then placed in a dynamic calciner at 600°C for 2 hours, then crushed, and passed through a 200-mesh sieve. Package.

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Abstract

The invention discloses a method for preparing a hybrid antibacterial agent by using oil shale semi-coke. The semi-coke is prepared into a semi-coke slurry with a mass percentage of 10-20% under mechanical stirring; Add zinc salt with a semi-coke mass fraction of 20-35%, stir for 25-30 minutes, add lye to adjust the pH of the system to 7.5-8, and continue stirring for 50-60 minutes before solid-liquid separation; the obtained filter cake is 1:8-1: The mass solid-liquid ratio of 12 is dispersed in water, and the solid-liquid separation is carried out after stirring for 25~30min; Crushed through a 200-mesh sieve to obtain a hybrid antibacterial agent. The hybrid antibacterial agent prepared by the invention has high activity antibacterial materials, and its products can be applied to the fields of antibacterial ceramics, antibacterial coatings, antibacterial plastics, antibacterial coatings, antibacterial surface treatment and the like.

Description

technical field [0001] The invention relates to a method for preparing a hybrid antibacterial agent, in particular to a method for preparing a hybrid antibacterial agent by using oil shale semi-coke, and belongs to the field of waste recycling and functional materials. Background technique [0002] In recent years, the phenomenon of bacterial drug resistance has become increasingly prominent, and drug-resistant bacteria can directly or indirectly enter people's living environment, posing a serious threat to people's health (Infectious Diseases: Research and Treatment, 2018, 11: 1178633718767887). Inorganic antibacterial agents are widely used because of their high efficiency, broad spectrum, stability, persistence and heat resistance. However, the further development of low-cost and green environmental protection antibacterial agents is still one of the hot spots. [0003] my country's oil shale resources are about 700 billion tons, equivalent to about 40 billion tons of sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/16A01N59/06A01N59/00A01P3/00A01P1/00
CPCA01N59/00A01N59/06A01N59/16
Inventor 王爱勤惠爱平康玉茹王文波牟斌
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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