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A kind of oyster shell-stealth chlorine dioxide antibacterial material and its preparation method and use method

A chlorine dioxide and antibacterial material technology is applied in the field of antibacterial materials and their preparation, oyster shell-invisible chlorine dioxide antibacterial materials and their preparation fields, and can solve the problems of rising production costs, insufficient porosity, and low activity of shell powder. , to achieve the effect of low production cost, long duration and excellent chemical activity

Active Publication Date: 2018-03-13
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, on the one hand, the above-mentioned technical solution has high calcination temperature, high energy consumption, low activity of shell powder after calcination, and insufficient porosity; on the other hand, it needs to add 7-9% of the total weight of the material. Chitin, which accounts for 4-6% of the total weight of the material, has caused a further increase in its production cost, and the soaked and bleached vegetables and fruits need to be rinsed with a lot of water before they can be eaten safely. Require

Method used

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  • A kind of oyster shell-stealth chlorine dioxide antibacterial material and its preparation method and use method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Oyster shell-invisible chlorine dioxide antibacterial material is prepared as follows:

[0051] In the first step, the oyster shells that have been naturally fermented and purified are first cleaned with clean water, then dried in the sun or in the shade under natural ventilation conditions, and finally crushed to particles with a particle size of 0.5-2.5mm to make raw meal;

[0052] In the second step, the above-mentioned raw material is put into a high-temperature furnace, and the clinker is obtained by a three-stage stepped heating calcination method; the specific calcination steps are as follows:

[0053] First, heat up to 300°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0054] Then, continue to heat up to 650°C at a heating rate of 5°C / min, and keep it warm for 15 minutes; then, ventilate and cool down to 600°C;

[0055] Then raise the temperature to 810°C at a heating rate of 10°C / min, and keep it warm for 40 minutes; then, ventilate an...

Embodiment 2

[0059] Oyster shell-invisible chlorine dioxide antibacterial material is prepared as follows:

[0060] In the first step, the oyster shells that have been naturally fermented and purified are first cleaned with clean water, then dried in the sun or in the shade under natural ventilation conditions, and then crushed to particles with a particle size of 2.5-3.5mm to make raw meal;

[0061] In the second step, the above-mentioned raw material is put into a high-temperature furnace, and the clinker is obtained by a three-stage stepped heating calcination method; the specific calcination steps are as follows:

[0062] First raise the temperature to 350°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0063] Then, continue to heat up to 650°C at a heating rate of 5°C / min, then keep it warm for 20 minutes; then, ventilate and cool down to 600°C;

[0064] Then raise the temperature to 830°C at a heating rate of 10°C / min, and keep it warm for 20 minutes; then, v...

Embodiment 3

[0068] Oyster shell-invisible chlorine dioxide antibacterial material is prepared as follows:

[0069] In the first step, the oyster shells that have been piled up for natural fermentation and purification are firstly cleaned with clean water, then dried in the sun or in the shade under natural ventilation conditions, and then crushed to particles with a particle size of 0.5-3.5mm to make raw meal;

[0070] In the second step, the above-mentioned raw material is put into a high-temperature furnace, and the clinker is obtained by a three-stage stepped heating calcination method; the specific calcination steps are as follows:

[0071] First raise the temperature to 330°C at a heating rate of 2°C / min, then keep it warm for 10 minutes;

[0072] Then, continue to heat up to 650°C at a heating rate of 5°C / min, then keep it warm for 20 minutes; then, ventilate and cool down to 600°C;

[0073] Then raise the temperature to 820°C at a heating rate of 10°C / min, and keep it warm for 30 ...

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Abstract

The invention discloses an oyster shell and invisible chlorine dioxide antibacterial material and a preparation method and a using method thereof. The oyster shell and invisible chlorine dioxide antibacterial material disclosed by the invention is a mixture of oyster shell powder, sodium chlorite powder and sodium bisulfate powder of which particle sizes are smaller than 50mum, wherein the weight ratio of the oyster shell powder to the sodium chlorite powder to the sodium bisulfate powder is 1:(0.05 to 0.1):(0.1 to 0.2); the oyster shell powder is of a loose porous structure and is high-activity powder prepared by using oyster shells as a raw material and carrying out calcination and grinding. According to the preparation method of the oyster shell and invisible chlorine dioxide antibacterial material, clinkers are prepared by a three-step type heating-up calcination method so as to obtain the oyster shell powder with the loose porous structure and high chemical activity; the using method of the oyster shell and invisible chlorine dioxide antibacterial material, which is used for removing pesticide residues of agricultural products, is simple, safe and efficient and does not generate no secondary pollution. Relative to the prior art, the oyster shell and invisible chlorine dioxide antibacterial material has the characteristics of low cost, energy saving and environmental protection, use safety, high efficiency, green and environmental protection and the like, is suitable for detergent washing processing of various fruits and vegetables, can effectively remove pesticide ingredient residues attached to the surfaces of the fruits and vegetables, and has a broad-spectrum bactericidal effect.

Description

technical field [0001] The invention relates to an antibacterial material and its preparation method and its use method, in particular to an oyster shell-invisible chlorine dioxide antibacterial material and its preparation method and its use method for removing pesticide residues in agricultural products, belonging to the technical field of oyster shell modification . Background technique [0002] There are many types of marine shellfish in my country, and the output in 2014 reached 14 million tons. Among them, oyster production is the largest, with an annual output of 4.1 million tons. The shell weight of oysters accounts for more than 75% of the total weight of oysters. That is to say, my country will produce about more than 3 million tons of oyster shells every year. [0003] If oyster shell solid waste is discarded into the natural environment, it will not only have a negative impact on the aesthetics of the environment, but also occupy a large amount of available la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N59/00A01P1/00A23L5/20
CPCY02A50/30
Inventor 李群李子超赵昔慧王越刘倩倩刘彩虹孙小璐陆香珍乔银楠许春芳
Owner QINGDAO UNIV
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