CN113578016A - Preparation method of micro-nano zinc deodorant for pig farm - Google Patents

Preparation method of micro-nano zinc deodorant for pig farm Download PDF

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CN113578016A
CN113578016A CN202110742015.5A CN202110742015A CN113578016A CN 113578016 A CN113578016 A CN 113578016A CN 202110742015 A CN202110742015 A CN 202110742015A CN 113578016 A CN113578016 A CN 113578016A
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zinc
deodorant
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nano zinc
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CN113578016B (en
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黄世伟
查进
陈海亮
吴玄峰
刘慧梅
钱鹏
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Nanjing Kaichuang Xietong Nano Technology Co ltd
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Nanjing Kaichuang Xietong Nano Technology Co ltd
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Abstract

The invention provides a preparation method of a micro-nano zinc deodorant for a pig farm, which is characterized in that a zinc particle solution is prepared according to a proportion by using a micro-emulsion method; preparing a micro-nano zinc solution A by utilizing a cavitation effect; adding a micro-nano zinc solution A and a complexing activator into deionized water, mixing, and then carrying out ultrasonic emulsification to obtain an aqueous complexing activating solution B; adding a pH regulator, and regulating the pH to 6.0-8.0 to obtain the micro-nano zinc deodorant for the pig farm; the micro-nano zinc deodorant for the pig farm has the excellent performances of environmental protection, no toxicity, no stimulation, no corrosion, quick deodorization effect, lasting effect, high deodorization efficiency and the like.

Description

Preparation method of micro-nano zinc deodorant for pig farm
Technical Field
The invention relates to a pig farm deodorant; more particularly, the invention relates to a micro-nano zinc deodorant for a pig farm, and in addition, the invention also relates to a preparation method of the micro-nano zinc deodorant for the pig farm.
Background
Foul smell in pig farms is mainly decomposed and decomposed by excrement, padding, sewage and the like from pigs; also, fresh excrements of pigs, body surface dirt and secretions, gases discharged from the digestive tract, exhaled gases and the like all give off unpleasant odors. In the process of decomposing pig excrement and urine, the decarboxylation and deamination of protein and amino acid due to bacterial activity are very important for the generation of malodorous substances. In addition, dust in the air in a pig farm is a carrier for microorganisms and can adsorb a large amount of volatile odors. Meanwhile, microorganisms continuously decompose organic matters in the dust to generate odor. The pig manure odor components have more than 230, and the odor substances with the greatest harm to pigs mainly comprise NH3, H2S, mercaptan and thioether substances.
Harmful gas in the piggery can generate certain harm to the respiratory system of workers, and the harmful gas in the piggery enters the respiratory tract along with breathing to cause a series of respiratory system diseases such as bronchitis, allergic alveolitis, occupational asthma and the like, so that the function of the lung is weakened, even the permanent change of the alveoli is caused, and the volume of the lung is reduced. Ammonia gas in the pigsty is very easy to adsorb on moist eye mucosa and respiratory tract mucosa, has certain corrosivity, and especially can destroy the defense barrier (mucosa layer, bronchus cilium and the like) of the respiratory tract by continuously damaging the respiratory tract mucosa, so that bacterial viruses in the air of the pigsty directly invade the lung.
The odor of the pig farm is very serious to damage the health of animals and workers and the ecological environment, along with the attention of government departments to environmental protection, the scale pig farm begins to consider the use of deodorant products, and the deodorization products in the market have various defects and insufficiencies, such as poor performance, instability, poor safety and the like. Most of the commercial products are fragrant products, which are covered by the fragrance of the products, and the products cannot perform the function of deodorization per se, so that the odor still exists in the air, and the harmfulness still exists. Products with good safety, good deodorization effect and good stability are urgently needed in the market.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the micro-nano zinc deodorant for the pig farm and the preparation method thereof, wherein the micro-nano zinc deodorant is green and environment-friendly, simple in preparation method, long in deodorization effect, short in action time and good in stability, and the preparation method is used for solving the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a micro-nano zinc deodorant for a pig farm comprises the following steps:
s1: preparing a zinc particle solution by using a micro-emulsion method, wherein the particle size of zinc particles is 10nm-600 nm;
s2: transferring the prepared zinc particle solution to the next reaction kettle, and preparing a micro-nano zinc solution A by utilizing the cavitation phenomenon;
s3: adding 1-10 parts by mass of micro-nano zinc solution A and 0.1-10 parts by mass of complexing activator into 100 parts by mass of deionized water, mixing, and then performing ultrasonic emulsification to obtain aqueous complexing activation solution B;
s4: and adding 0.01-1 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, and regulating the pH to 6.0-8.0 to prepare the micro-nano zinc deodorant for the pig farm.
Further, step S1 further includes step S1.1, the microemulsion is prepared to form a WPO reverse microemulsion system: dissolving a surfactant in an organic solvent, mixing with a cosurfactant and deionized water, and stirring to prepare a uniform, transparent and thermodynamic stable WPO (waterborne polyurethane) reverse microemulsion system.
When the surfactant concentration exceeds the critical micelle concentration CMC, a liquid particle structure with hydrophilic polar heads inward and hydrophobic organic chains outward is formed, and the core thereof can solubilize water molecules or hydrophilic substances.
Further, in the step S1.1, the volume ratio of the total volume of the surfactant, the cosurfactant and the organic solvent to the deionized water is 1-4:1, and the volume ratio of the surfactant, the cosurfactant and the organic solvent is 1-5:1: 2-4;
wherein, the organic solvent is one or more of alkane and cyclane;
the surfactant is a nonionic surfactant; the nonionic surfactant is one or more of polyoxyethylene nonyl phenyl ether, nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether or high-carbon fatty polyoxyethylene ether;
the cosurfactant is fatty alcohol.
Further, in step S1.1, the organic solvent is cyclohexane; the cosurfactant is one or more of isoamyl alcohol, n-heptanol, n-octanol, n-nonanol, n-decanol or cetyl alcohol.
Further, step S1 further includes step S1.2:
preparation of zinc particle solution: respectively adding a zinc salt aqueous solution with the concentration of 400-600 g/L and a hydrazine hydrate solution into a WPO reverse microemulsion system, stirring and mixing, and reacting for 5-8h to obtain a zinc particle solution with the particle size of 10-600 nm.
Further, in the step S1.2, the reaction temperature is 40-80 ℃, and the stirring speed is 2000-;
the volume ratio of the zinc salt aqueous solution to the hydrazine hydrate solution is 1:1, and the volume ratio of the hydrazine hydrate solution to the WPO reverse microemulsion system is 1: 3.5-4; the zinc salt is one or more of zinc sulfate, zinc nitrate, zinc citrate and zinc gluconate.
Further, the step S2 further includes:
step S2.1: transferring the zinc particle solution prepared in the step S1 to the next reaction kettle, stirring at 60 ℃ and the stirring speed of 2000-; fine liquid-gas interphase interfaces are formed by utilizing the processes of forming, developing, collapsing and rebounding of the liquid vacuoles, and the surfaces of the zinc particles are corroded by utilizing the micro-jet flow and the impact action generated when the vacuoles collapse;
step S2.2: reacting for 5 hours to obtain the micro-nano zinc solution A.
Further, the mixing time in step S3 is 20 to 60 minutes.
Further, in step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of malic acid to tartaric acid is 5-8: 1.
Further, in step S4, the pH adjusting agent is sodium bicarbonate.
When the micro-nano zinc is prepared, the surface of zinc particles is corroded by adopting a cavitation phenomenon to form an acute angle with an irregular shape, and the micro-nano zinc shows a positive charge effect when contacting bacteria or viruses and generates coulomb force with bacterial cell walls or virus cells showing a negative charge effect; the attraction of coulomb force and the edge of the spike can kill bacteria and viruses quickly, and the bacteria and the viruses can not be propagated or transferred continuously and die; the micro-nano zinc is not consumed in the process of killing bacteria or viruses, and can continuously cause the death of the bacteria and the viruses, so the micro-nano zinc can continuously and durably kill the bacteria and the viruses, and the defect of the nano zinc in the aspect of quick bactericidal performance is overcome.
The prepared micro-nano zinc solution A is used as an intermediate, the aqueous complexing activation solution B prepared after complexing activation has very good complexing action and catalytic function, ionic zinc released by the active solution is easy to combine with hydrogen sulfide in odor to form zinc sulfide, and the ionic solubility product of the zinc sulfide is very small (only 1.2 multiplied by 10)-23) The active complexing functional group in the aqueous complexing activation solution B is complexed with ammonia in odor and odor molecules such as indole, thiols, thioether and the like to generate macromolecular complex which has no odor, good stability, no toxicity and no harmA compound (I) is provided.
The reason for generating a plurality of odor molecules is that odor compounds containing nitrogen and sulfur are generated due to the decomposition of organic matters by microorganisms, and the micro-nano zinc solution A has the functions of sterilizing and inactivating viruses, so that the breeding of microorganisms is inhibited, the generation of odor molecules is inhibited from the source, and the deodorization function is achieved.
The pH regulator is used for regulating the range of the deodorant product to be 6.0-8.0, is close to neutral, has no acid-base corrosivity in the using process, and is safer and relieved.
Compared with the prior art, the invention has the following beneficial effects because the technology is adopted:
(1) the micro-nano zinc deodorant for the pig farm has the excellent performances of environmental protection, no toxicity, no stimulation, no corrosion, quick deodorization effect, lasting effect, high deodorization efficiency and the like.
(2) The deodorization effect time is short, the effect is quick, the deodorization efficiency is high, and the removal rate of hydrogen sulfide and ammonia in 20min can reach more than 99 percent;
(3) the deodorization effect is durable, and the removal rate of hydrogen sulfide and ammonia is still over 99 percent over 10 days.
Drawings
FIG. 1 is a microstructure diagram of micro-nano zinc with etching pits obtained by utilizing cavitation effect in example 1;
fig. 2 is a distribution diagram of the particle size of the micro-nano zinc in example 1.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work based on the embodiments of the present invention belong to the scope of the present invention.
In the following examples, ammonia gas detection is carried out according to GB/T14679-93, and odors such as hydrogen sulfide, methyl mercaptan, methyl sulfide and the like are detected according to GB/T14678-93.
Example 1 preparation of micro-nano Zinc solution A and Performance Effect
(1) The preparation method of the micro-nano zinc solution A comprises the following steps:
step S1.1: dissolving 50mL of nonylphenol polyoxyethylene ether and 30mL of n-octanol in 120mL of cyclohexane, and stirring with 20mL of isoamyl alcohol and 200mL of deionized water to prepare a WPO (waterborne polyurethane emulsion) reverse microemulsion system;
step S1.2: adding 1000mL of zinc salt aqueous solution (mixed solution of zinc citrate and zinc nitrate) with the concentration of 450g/L and 1000mL of hydrazine hydrate solution into 3600mL of HPO reverse microemulsion for mixing, and reacting for 6.5h at 65 ℃ and the rotating speed of 4600rpm to prepare zinc particle solution with the particle size of 10nm-600 nm;
step S2.1: transferring the prepared zinc particle solution into the next reaction kettle, stirring at 60 ℃, 4600rpm, and introducing high-speed air flow to form a cavitation phenomenon;
step S2.2: the reaction time is 5 hours, and the micro-nano zinc solution A is prepared.
A TEM image of the prepared micro-nano zinc is shown in fig. 1.
As shown in fig. 2, the microemulsion method is used to prepare zinc with the particle size between micron and nanometer, and the reaction conditions are controlled to prepare zinc particles with the particle size:
Figure BDA0003141824610000051
preferred results are:
Figure BDA0003141824610000052
the zinc particles 1 account for 50% of the total number, and the particle diameter of the zinc particles 1
Figure BDA0003141824610000053
Figure BDA0003141824610000054
Accounting for 30% of the total.
The invention controls the reaction condition to prepare the product with the grain diameter of
Figure BDA0003141824610000055
Micro-nano zinc and applying cavitation effect to shape the particle surface of zinc particlesForming corrosion pits to improve the efficacy of quickly sterilizing and inactivating viruses.
It is recognized at home and abroad that the average diameter of the nano particles is
Figure BDA0003141824610000056
When used, the particles are referred to as nanoparticles. The diameter of the prepared zinc particles is between nanometer and micrometer, so the micro-nano zinc is called micrometer nano zinc and is called micro-nano zinc for short.
(2) Micro-nano zinc solution A sterilization effect
Preparing the micro-nano zinc solution A prepared in the above step into a micro-nano zinc aqueous solution with the concentration of 1000mg/kg, and then sequentially diluting the micro-nano zinc aqueous solution A into a solution with the concentration of: the method comprises the following steps of sequentially marking micro-nano zinc aqueous solutions with the concentrations of 800mg/kg, 500mg/kg, 400mg/kg and 300mg/kg as a group 5, a group 4, a group 3, a group 2 and a group 1, measuring the sterilization rate of the micro-nano zinc aqueous solution according to a suspension quantitative method of disinfection technical specification, wherein test strains comprise escherichia coli, staphylococcus aureus, candida albicans and pseudomonas aeruginosa for 20s, 30s and 60 s; the test results are shown in table 1.
TABLE 1 Sterilization Effect of micro-nano Zinc solution A under different time
Figure BDA0003141824610000057
Figure BDA0003141824610000061
(3) Micro-nano zinc solution A virus inactivation effect
(a) Preparing the micro-nano zinc solution A prepared in the above step into a micro-nano zinc aqueous solution with the concentration of 1000mg/kg, and then sequentially diluting the micro-nano zinc aqueous solution A into a solution with the concentration of: the method comprises the following steps of sequentially marking micro-nano zinc aqueous solutions with the concentrations of 1000mg/kg, 800mg/kg, 500mg/kg, 400mg/kg and 300mg/kg as a group 5, a group 4, a group 3, a group 2 and a group 1, determining the virus inactivation rate of the micro-nano zinc aqueous solution according to disinfection technical specifications, testing the viruses to be poliovirus, influenza A virus H1N1, enterovirus and avian influenza virus H5N1 for 10s, 20s and 30 s; the test results are shown in table 2.
TABLE 2 Virus inactivating effect of micro-nano zinc solution A on different time
Figure BDA0003141824610000071
(b) Preparing the micro-nano zinc solution A prepared in the above step into an aqueous solution with the concentration of 1000mg/kg, diluting the micro-nano zinc aqueous solution by 10000 times to obtain a micro-nano zinc aqueous solution with the concentration of 100 mug/kg, and taking 5 parallel samples to mark as: group 1, group 2, group 3, group 4 and group 5, groups 1 to 5 respectively with a concentration of 106TCID50Mixing pseudorabies virus and coronavirus (PEDV) in a contact manner for 30min, and measuring the virus inactivation rate; the test results are shown in table 3.
TABLE 3 Virus inactivating effect of micro-nano zinc solution A
Figure BDA0003141824610000081
Example 2 Zinc-based deodorant for pig farm
S3: weighing 100 parts by mass of deionized water, adding 1 part by mass of the micro-nano zinc solution A prepared in the example 1, adding 0.1 part by mass of a complexing activator, carrying out magnetic stirring for 25 minutes, and carrying out ultrasonic emulsification for 35min to prepare a uniform aqueous complexing activation solution B;
s4: and adding 0.01 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, uniformly stirring and dispersing, and controlling the pH to be 6.9 to prepare the micro-nano zinc deodorant for the pig farm.
In the step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of the malic acid to the tartaric acid is 5: 1.
In step S4, the pH adjusting agent is sodium bicarbonate.
The following tests were carried out on the deodorizing effect and the lasting deodorizing ability of the deodorant:
preparing two rooms with the same specification and 15 square meters in a pig farm, paving pig farm excrement with the area of 300cm multiplied by 300cm and the thickness of 3cm on the bottom of each room, using a room without spraying a deodorant as a reference room, using the other room with spraying the deodorant as a test room, detecting odor concentration 20min and 10 days after spraying a zinc-based deodorant, adopting 6 multiplied by 6 gridding in the rooms, detecting according to 36 gridded points, then taking the average value of each odor concentration of the 36 points, and calculating the odor concentration removal efficiency; the results of odor concentration measurements at 20min and 10 days are shown in Table 4 below.
TABLE 4 odor concentration and removal Rate
Figure BDA0003141824610000091
Example 3 Zinc-based deodorant for pig farm
S3: weighing 100 parts by mass of deionized water, adding 1 part by mass of the micro-nano zinc solution A prepared in the example 1, adding 10 parts by mass of a complexing activator, carrying out magnetic stirring for 25 minutes, and carrying out ultrasonic emulsification for 35min to prepare a uniform aqueous complexing activation solution B;
s4: and adding 1 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, uniformly stirring and dispersing, and controlling the pH to be 7.0 to prepare the micro-nano zinc deodorant for the pig farm.
In the step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of the malic acid to the tartaric acid is 8: 1.
In step S4, the pH adjusting agent is sodium bicarbonate.
The following tests were carried out on the deodorizing effect and the lasting deodorizing ability of the deodorant:
preparing two rooms with the same specification and 15 square meters in a pig farm, paving pig farm excrement with the area of 300cm multiplied by 300cm and the thickness of 3cm on the bottom of each room, using a room without spraying a deodorant as a reference room, using the other room with spraying the deodorant as a test room, detecting odor concentration 20min and 10 days after spraying a zinc-based deodorant, adopting 6 multiplied by 6 gridding in the rooms, detecting according to 36 gridded points, then taking the average value of each odor concentration of the 36 points, and calculating the odor concentration removal efficiency; the results of odor concentration measurements at 20min and 10 days are shown in Table 5 below.
TABLE 5 odor concentration and removal Rate
Figure BDA0003141824610000101
Example 4 Zinc-based deodorant for pig farm
S3: weighing 100 parts by mass of deionized water, adding 1 part by mass of the micro-nano zinc solution A prepared in the example 1, adding 1.3 parts by mass of a complexing activator, carrying out magnetic stirring for 25 minutes, and carrying out ultrasonic emulsification for 35min to prepare a uniform aqueous complexing activation solution B;
s4: and adding 0.3 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, uniformly stirring and dispersing, and controlling the pH to be 7.2 to prepare the micro-nano zinc deodorant for the pig farm.
In the step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of the malic acid to the tartaric acid is 6: 1.
In step S4, the pH adjusting agent is sodium bicarbonate.
The following tests were carried out on the deodorizing effect and the lasting deodorizing ability of the deodorant:
preparing two rooms with the same specification and 15 square meters in a pig farm, paving pig farm excrement with the area of 300cm multiplied by 300cm and the thickness of 3cm on the bottom of each room, using a room without spraying a deodorant as a reference room, using the other room with spraying the deodorant as a test room, detecting odor concentration 20min and 10 days after spraying a zinc-based deodorant, adopting 6 multiplied by 6 gridding in the rooms, detecting according to 36 gridded points, then taking the average value of each odor concentration of the 36 points, and calculating the odor concentration removal efficiency; the results of odor concentration measurements at 20min and 10 days are shown in Table 6 below.
TABLE 6 odor concentration and removal Rate
Figure BDA0003141824610000111
Example 5 Zinc-based deodorant for pig farm
S3: weighing 100 parts by mass of deionized water, adding 1 part by mass of the micro-nano zinc solution A prepared in the example 1, adding 1.1 parts by mass of a complexing activator, carrying out magnetic stirring for 25 minutes, and carrying out ultrasonic emulsification for 35min to prepare a uniform aqueous complexing activation solution B;
s4: and adding 0.2 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, uniformly stirring and dispersing, and controlling the pH to be 7.1 to prepare the micro-nano zinc deodorant for the pig farm.
In the step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of the malic acid to the tartaric acid is 5.5: 1.
In step S4, the pH adjusting agent is sodium bicarbonate.
The following tests were carried out on the deodorizing effect and the lasting deodorizing ability of the deodorant:
preparing two rooms with the same specification and 15 square meters in a pig farm, paving pig farm excrement with the area of 300cm multiplied by 300cm and the thickness of 3cm on the bottom of each room, using a room without spraying a deodorant as a reference room, using the other room with spraying the deodorant as a test room, detecting odor concentration 20min and 10 days after spraying a zinc-based deodorant, adopting 6 multiplied by 6 gridding in the rooms, detecting according to 36 gridded points, then taking the average value of each odor concentration of the 36 points, and calculating the odor concentration removal efficiency; the results of odor concentration measurements at 20min and 10 days are shown in Table 7 below.
TABLE 7 odor concentration and removal Rate
Figure BDA0003141824610000121
Example 6 Zinc-based deodorant for pig farm
S3: weighing 100 parts by mass of deionized water, adding 1 part by mass of the micro-nano zinc solution A prepared in the example 1, adding 7 parts by mass of a complexing activator, carrying out magnetic stirring for 25 minutes, and carrying out ultrasonic emulsification for 35min to prepare a uniform aqueous complexing activation solution B;
s4: and adding 0.02 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, uniformly stirring and dispersing, and controlling the pH to be 6.0 to prepare the micro-nano zinc deodorant for the pig farm.
In the step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of the malic acid to the tartaric acid is 7.2: 1.
In step S4, the pH adjusting agent is sodium bicarbonate.
The following tests were carried out on the deodorizing effect and the lasting deodorizing ability of the deodorant:
preparing two rooms with the same specification and 15 square meters in a pig farm, paving pig farm excrement with the area of 300cm multiplied by 300cm and the thickness of 3cm on the bottom of each room, using a room without spraying a deodorant as a reference room, using the other room with spraying the deodorant as a test room, detecting odor concentration 20min and 10 days after spraying a zinc-based deodorant, adopting 6 multiplied by 6 gridding in the rooms, detecting according to 36 gridded points, then taking the average value of each odor concentration of the 36 points, and calculating the odor concentration removal efficiency; the results of odor concentration measurements at 20min and 10 days are shown in Table 8 below.
TABLE 8 odor concentration and removal Rate
Figure BDA0003141824610000131
Example 7 Zinc-based deodorant for pig farm
S3: weighing 100 parts by mass of deionized water, adding 1 part by mass of the micro-nano zinc solution A prepared in the example 1, adding 0.2 part by mass of a complexing activator, carrying out magnetic stirring for 25 minutes, and carrying out ultrasonic emulsification for 35min to prepare a uniform aqueous complexing activation solution B;
s4: and adding 0.9 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, uniformly stirring and dispersing, and controlling the pH to be 8.0 to prepare the micro-nano zinc deodorant for the pig farm.
In the step S3, the complexing activator is a mixture of malic acid and tartaric acid, and the mass ratio of the malic acid to the tartaric acid is 6.5: 1.
In step S4, the pH adjusting agent is sodium bicarbonate.
The following tests were carried out on the deodorizing effect and the lasting deodorizing ability of the deodorant:
preparing two rooms with the same specification and 15 square meters in a pig farm, paving pig farm excrement with the area of 300cm multiplied by 300cm and the thickness of 3cm on the bottom of each room, using a room without spraying a deodorant as a reference room, using the other room with spraying the deodorant as a test room, detecting odor concentration 20min and 10 days after spraying a zinc-based deodorant, adopting 6 multiplied by 6 gridding in the rooms, detecting according to 36 gridded points, then taking the average value of each odor concentration of the 36 points, and calculating the odor concentration removal efficiency; the results of odor concentration measurements at 20min and 10 days are shown in Table 9 below.
TABLE 9 odor concentration and removal Rate
Figure BDA0003141824610000132
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the preferred embodiments of the invention and described in the specification are only preferred embodiments of the invention and are not intended to limit the invention, and that various changes and modifications may be made without departing from the novel spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A preparation method of a micro-nano zinc deodorant for a pig farm is characterized by comprising the following steps:
s1: preparing a zinc particle solution by using a micro-emulsion method, wherein the particle size of zinc particles is 10nm-600 nm;
s2: transferring the prepared zinc particle solution to the next reaction kettle, and preparing a micro-nano zinc solution A by utilizing the cavitation phenomenon;
s3: adding 1-10 parts by mass of micro-nano zinc solution A and 0.1-10 parts by mass of complexing activator into 100 parts by mass of deionized water, mixing, and then performing ultrasonic emulsification to obtain aqueous complexing activation solution B;
s4: and adding 0.01-1 part by mass of pH regulator into 100 parts by mass of the aqueous complexing activation solution B, and regulating the pH to 6.0-8.0 to prepare the micro-nano zinc deodorant for the pig farm.
2. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 1, which is characterized by comprising the following steps: the mixing time in step S3 is 20-60 minutes.
3. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 1, which is characterized by comprising the following steps: in step S3, the complexing activator is a mixture of malic acid and tartaric acid.
4. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 3, which is characterized by comprising the following steps: the mass ratio of the malic acid to the tartaric acid is 5-8: 1.
5. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 1, which is characterized by comprising the following steps: in step S4, the pH adjusting agent is sodium bicarbonate.
6. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 1, wherein the step S1 further comprises a step S1.1 of preparing a WPO reverse microemulsion system by microemulsion preparation: dissolving a surfactant in an organic solvent, mixing with a cosurfactant and deionized water, and stirring to prepare a WPO (waterborne polyurethane emulsion) reverse microemulsion system;
step S1.2, preparation of zinc particle solution: respectively adding a zinc salt aqueous solution with the concentration of 400-600 g/L and a hydrazine hydrate solution into a WPO reverse microemulsion system, stirring and mixing, and reacting for 5-8h to obtain a zinc particle solution with the particle size of 10-600 nm.
7. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 6, which is characterized by comprising the following steps: in the step S1.1, the volume ratio of the total volume of the surfactant, the cosurfactant and the organic solvent to the deionized water is 1-4:1, and the volume ratio of the surfactant, the cosurfactant and the organic solvent is 1-5:1: 2-4;
wherein, the organic solvent is one or more of alkane and cyclane;
the surfactant is a nonionic surfactant; the nonionic surfactant is one or more of polyoxyethylene nonyl phenyl ether, nonylphenol polyoxyethylene ether, octylphenol polyoxyethylene ether or high-carbon fatty polyoxyethylene ether;
the cosurfactant is fatty alcohol.
8. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 7, which is characterized by comprising the following steps: in the step S1.1, the organic solvent is cyclohexane; the cosurfactant is one or more of isoamyl alcohol, n-heptanol, n-octanol, n-nonanol, n-decanol or cetyl alcohol.
9. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 6, which is characterized by comprising the following steps: in the step S1.2, the reaction temperature is 40-80 ℃, and the stirring speed is 2000-5000 rpm;
the volume ratio of the zinc salt aqueous solution to the hydrazine hydrate solution is 1:1, and the volume ratio of the hydrazine hydrate solution to the WPO reverse microemulsion system is 1: 3.5-4; the zinc salt is one or more of zinc sulfate, zinc nitrate, zinc citrate and zinc gluconate.
10. The preparation method of the micro-nano zinc deodorant for the pig farm according to claim 6, wherein the step S2 further comprises:
step S2.1: transferring the zinc particle solution prepared in the step S1 to the next reaction kettle, stirring at 60 ℃ and the stirring speed of 2000-;
step S2.2: reacting for 5 hours to obtain the micro-nano zinc solution A.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000354769A (en) * 1999-06-15 2000-12-26 Suzuki Motor Corp Method for manufacturing catalyst for cleaning exhaust gas
CN101934219A (en) * 2009-06-30 2011-01-05 郭春樱 Porous carbon material having effects of long-acting nanometer antibacterium and accelerant, and preparation method thereof
CN104014814A (en) * 2014-06-19 2014-09-03 江苏凯尚节能科技有限公司 Preparation method for nano-zinc particles
CN112755231A (en) * 2020-12-29 2021-05-07 南京凯创微锌环境技术有限公司 Preparation method of chicken farm deodorant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000354769A (en) * 1999-06-15 2000-12-26 Suzuki Motor Corp Method for manufacturing catalyst for cleaning exhaust gas
CN101934219A (en) * 2009-06-30 2011-01-05 郭春樱 Porous carbon material having effects of long-acting nanometer antibacterium and accelerant, and preparation method thereof
CN104014814A (en) * 2014-06-19 2014-09-03 江苏凯尚节能科技有限公司 Preparation method for nano-zinc particles
CN112755231A (en) * 2020-12-29 2021-05-07 南京凯创微锌环境技术有限公司 Preparation method of chicken farm deodorant

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