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Antibacterial material for removing pesticide residues from oyster shell with buffer system and preparation method and use method thereof

A technology of antibacterial materials and buffer systems, applied in botany equipment and methods, applications, and resistance to vector-borne diseases, etc., can solve the problems of insufficient porosity, rising production costs, low activity of shell powder, etc., and achieve low production costs , Low cost of use, excellent chemical activity effect

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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  • Antibacterial material for removing pesticide residues from oyster shell with buffer system and preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The buffer system oyster shell antibacterial material for removing pesticide residues is prepared as follows:

[0050] 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;

[0051] 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:

[0052] First, heat up to 300°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0053] 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;

[0054] Then raise the temperature to 810°C at a heating rate of 10°C / min, and keep it war...

Embodiment 2

[0058] The buffer system oyster shell antibacterial material for removing pesticide residues is prepared as follows:

[0059] 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;

[0060] 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:

[0061] First raise the temperature to 350°C at a heating rate of 2°C / min, and then keep it warm for 10 minutes;

[0062] 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;

[0063] Then raise the temperature to 820°C at a heating rate of 10°C / min, an...

Embodiment 3

[0067] The buffer system oyster shell antibacterial material for removing pesticide residues is prepared as follows:

[0068] 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;

[0069] 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:

[0070] First raise the temperature to 330°C at a heating rate of 2°C / min, then keep it warm for 10 minutes;

[0071] 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;

[0072] Then raise the temperature to 820°C at a heating rate of 10°C / min, and ke...

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Abstract

The invention discloses a buffer system oyster shell pesticide residue-removal antibacterial material and a preparation method and a use method thereof. The buffer system oyster shell pesticide residue-removal antibacterial material is a mixture of oyster shell powder with particle size less than 50mum, food-level sodium bicarbonate and sodium carbonate according to the weight ratio of 1:0.3-0.7:0.3-0.7, wherein the oyster shell powder is of a loose porous structure, and a high-activity powder which is prepared by using the oyster shell as raw material via calcining and powder grinding. The preparation method is characterized in that the clinker is prepared by the three-stage step type temperature-raising calcining method, so as to obtain the loose porous structure and the high chemical activity; the use method for removing the pesticide residues of agriculture products is simple, safe and efficient, and has no secondary pollution. Compared with the prior art, the buffer system oyster shell pesticide residue-removal antibacterial material has the characteristics that the cost is low, the energy-saving and environment-friendly effects are realized, the efficiency is high, the green and environment-friendly effects are realized, and the like; the material is suitable for the cleaning of various types of fruits and vegetables, the pesticide residues at the surfaces can be effectively adsorbed, and the escherichia coli is killed.

Description

technical field [0001] The invention relates to an antibacterial material, a preparation method and a use method thereof, in particular to a buffer system oyster shell antibacterial material for removing pesticide residues, a preparation method thereof and a 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 amou...

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 李子超郭培志李群彭洪亮刘芳芳马苗孙小璐陆香珍乔银楠许春芳
Owner QINGDAO UNIV
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