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A kind of preparation method and use method of oyster powder antibacterial material for removing pesticide residues

An antibacterial material and oyster powder technology are applied in botany equipment and methods, chemical instruments and methods, and resistance to vector-borne diseases, etc., which can solve problems such as rising production costs, insufficient porosity, and low activity of shell powder, and achieve Low cost of use, simple method of use, and the effect of removing pesticide residues and harmful bacteria

Active Publication Date: 2017-06-30
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 preparation method and use method of oyster powder antibacterial material for removing pesticide residues

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Oyster powder antibacterial material for removing pesticide residues is prepared as follows:

[0035] 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;

[0036] 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:

[0037] First, heat up to 300°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0038] Then, continue to heat up to 650°C at a heating rate of 5°C / min, keep warm for 20 minutes, and then ventilate and cool down to 600°C;

[0039] Then raise the temperature to 810°C at a heating rate of 10°C / min, and keep it warm for 40 minutes;...

Embodiment 2

[0042] Oyster powder antibacterial material for removing pesticide residues is prepared as follows:

[0043] 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;

[0044] 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:

[0045] First raise the temperature to 350°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0046] Then, continue to heat up to 650°C at a heating rate of 5°C / min, keep warm for 20 minutes, and then ventilate and cool down to 600°C;

[0047] Then raise the temperature to 820°C at a heating rate of 10°C / min, and keep it warm fo...

Embodiment 3

[0050] Oyster powder antibacterial material for removing pesticide residues is prepared as follows:

[0051]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;

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

[0054] Then, continue to heat up to 650°C at a heating rate of 5°C / min, keep warm for 18 minutes, and then ventilate and cool down to 600°C;

[0055] 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 a preparation method and a use method of an oyster powder pesticide residue removal antibacterial material. The preparation method comprises the following steps: preparing a clinker from oyster shells serving as a raw material through three-stage steplike heating calcining by a ventilation cooling method, and grinding the clinker by a grinding machine into powder with the particle size lower than 50 microns so as to prepare oyster shell powder with loose multihole structure and high chemical activity. The use method for removing pesticide residues from an agricultural product is simple, safe, efficient and secondary pollution-free. Compared with the prior art, the preparation method has the characteristics of low cost, energy conservation, environment friendliness, use safety, high efficiency, greenness and the like, and is suitable for cleaning various types of fruits and vegetables, so that the pesticide residues attached to the surfaces of the fruits and the vegetables can be effectively removed, and escherichia coli can be killed.

Description

technical field [0001] The invention relates to a method for preparing and using an antibacterial material, in particular to a method for preparing an oyster powder antibacterial material for removing pesticide residues and a method for using it 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 land. L...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/06B01J20/30A23L5/20A01N59/00A01P1/00
CPCY02A50/30
Inventor 李群李子超赵昔慧李晓雯马苗孙小璐陆香珍乔银楠许春芳
Owner QINGDAO UNIV
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