KR102219850B1 - Ammonia adsorption and antibacterial composition using zeolite and method for manufacturing the same - Google Patents

Abstract

The present invention comprises 10 to 80% by weight of natural zeolite, 10 to 80% by weight of modified zeolite, 5 to 15% by weight of antimicrobial zeolite, ammonia adsorption and antibacterial composition and method for preparing the same, and nitrogen comprising the ammonia adsorption and antibacterial composition It relates to fertilizer.
According to the present invention, ammonia adsorption and antibacterial composition including the natural zeolite, modified zeolite, and antibacterial zeolite is prepared and used in livestock farms to effectively remove ammonia, which is the main cause of odor generated in the facility, as well as antibacterial function. Thus, there is an effect that the treatment method can be sanitized. In addition, by providing a nitrogen-based fertilizer including ammonia adsorption and antibacterial composition, there is an effect of reducing the post-treatment cost of the adsorption composition and reducing environmental pollution problems caused by nitrogen through resource recycling.

Description

Ammonia adsorption and antibacterial composition using zeolite, and a method for producing the same. {AMMONIA ADSORPTION AND ANTIBACTERIAL COMPOSITION USING ZEOLITE AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to an ammonia adsorption and antibacterial composition comprising natural and modified zeolites and antimicrobial zeolites, and more particularly, the main odor generated in the facility by using an ammonia adsorption composition comprising natural and modified zeolites, etc. The present invention relates to an ammonia adsorption and antibacterial composition capable of effectively removing the cause of ammonia while exhibiting an antibacterial function, a method for preparing the same, and a nitrogen-based fertilizer using ammonia adsorption and antibacterial composition.

With the increase of national income, the consumption of meat in the national diet increases significantly, increasing the size of the livestock industry, and as the number of livestock farms increases, the number of livestock breeding increases, resulting in large amounts of odor, wastewater, and waste during the breeding process of livestock. .

In particular, livestock manure contains high concentrations of organic substances, so if it is discharged untreated, it causes environmental pollution, and large amounts of nitrogen and phosphorus contained in the manure are the cause of water pollution, and further, livestock odor is the cause of social problems and regional conflicts. Has become. Therefore, it is necessary to properly treat livestock manure and to create a pleasant livestock environment by preventing and reducing odors generated.

Ammonia is drawing attention as the cause of fine dust, which is a problem recently. The smog that occurred in London in 2014 was attributed to ammonia from agriculture. 80% of this ammonia was found to be directly generated in the agricultural field, and it was found that it mainly occurred in the fertilization of chemical fertilizers, the soil spray treatment process, and the storage of livestock manure. According to the report ``Clean Air Strategy 2018'' published by the UK Ministry of Environment, Food and Rural Affairs (DEFRA), ammonia remains in the atmosphere for several hours, but fine dust can remain for several days. Ammonia becomes fine dust by reacting with nitrogen oxides (NOX) and sulfur oxides (SOX) generated in automobiles. Ammonia that has become fine dust is removed from the atmosphere as it travels long distances or mixes with rain or snow and enters the ground or water. This results in a long-term environmental impact on the sensitively balanced ecosystems where nitrogen is supplied to soil and plants. Accordingly, the UK government has set a goal of reducing the ammonia concentration in 2005 by 8% by 2020 and by 16% by 2030.

In fact, the concentration of fine dust in the Jeonbuk region of Korea is relatively high compared to other cities and provinces where there are many factories, and the combination of ammonia gas from agricultural land and heavy metals in the air was pointed out as the cause. Experts point out that the government should take appropriate measures for activities in the agricultural and livestock sectors, which account for a large portion of ammonia emissions, and analysis of concentrations in the atmosphere.

Most of the odors emitted from livestock farms are caused by ammonia, and the levels of biochemical oxygen demand (BOD), chemical oxygen demand (COD), suspension solids (SS), and odors are high until the stage of initial manure slurry and composting. Therefore, high cost is required in the post-treatment process in the next step and the treatment performance is also unstable, which adds to the additional environmental pollution.

Currently, the general treatment method of livestock manure is fermentation and drying methods as composting of manure, and urine and washing water are treated by the activated sludge method. In addition, the most common manure mixing method is to ferment after mixing water absorption and regulators such as sawdust or rice husk to compost, and to add fermentation accelerators and treat it with liquid manure immediately.

Various fermentation accelerators and odor adsorption deodorants are used to shorten the period and reduce the occurrence of odors in the composting process of livestock manure, and products composed mainly of various microorganisms are applied. However, when microbial fermentation products are applied to livestock manure, the fermentation function is excellent, but there is no function to remove the previously formed odor, and it is inefficient in reducing and reducing the odor generated during the composting of manure. Moreover, the currently applied microbial preparations cannot be grown for more than 1 to 2 weeks at room temperature in a liquid state after cultivation. Therefore, most of them are discarded after about 30 days after cultivation, so the shelf life is short and the effect of the strain is low. It has a fatal problem that cannot be reproduced due to various effects.

Korean Patent Publication No. 10-1876425

An object of the present invention is to effectively remove ammonia, which is the main cause of odors generated in the facility, and to exhibit antibacterial functions by using ammonia adsorption and antibacterial compositions including natural and modified zeolites and antibacterial zeolites in livestock farms.

In addition, another object of the present invention is to further reduce the occurrence of odor by installing an adsorption net containing ammonia adsorption and antibacterial composition at an appropriate height inside the barn.

Another object of the present invention is to provide a nitrogen-based fertilizer comprising ammonia adsorption and antibacterial composition to reduce environmental pollution problems caused by nitrogen through resource recycling.

In order to achieve the above object, the present invention is to provide an ammonia adsorption and antibacterial composition comprising 10 to 80% by weight of natural zeolite, 10 to 80% by weight of modified zeolite, and 5 to 15% by weight of antibacterial zeolite. do.

The modified zeolite may be a natural zeolite treated with sodium chloride.

The natural zeolite is clinoptilolite, and the antibacterial zeolite may be obtained _{by introducing an NH 4} ⁺ -based compound into a synthetic zeolite.

The ammonia adsorption and antibacterial composition may be in a ring shape.

In addition, in order to achieve the above object, the present invention comprises the steps of: (a) selecting a natural zeolite; (b) preparing a modified zeolite; (c) a step of producing the antibacterial zeolite by introducing NH ₄ ⁺ in the compound synthetic zeolite La-byte; and (d) with a further aspect of the present invention to provide the above (a), (b), (c) ammonia adsorption comprising the step of mixing the chosen to manufacture the zeolite in steps and the manufacturing method of the antimicrobial composition.

In step (b), the natural zeolite may be treated with sodium chloride (NaCl), and the natural zeolite may be clinoptilolite.

In the step (d), 10 to 80% by weight of natural zeolite, 10 to 80% by weight of modified zeolite, and 5 to 15% by weight of antibacterial zeolite may be mixed.

In addition, in order to achieve the above object, the present invention is another aspect of the present invention to provide a nitrogen-based fertilizer comprising ammonia adsorption and antibacterial composition.

According to the present invention as described above, ammonia adsorption and antibacterial composition including natural zeolite, modified zeolite and antibacterial zeolite is prepared and used in livestock farms, thereby effectively removing ammonia, which is the main cause of odor generated in the facility, and antibacterial function. Thus, there is an effect that the treatment method can be sanitized. In addition, by providing a nitrogen-based fertilizer including ammonia adsorption and antibacterial composition, there is an effect of reducing the post-treatment cost of the adsorption composition and reducing environmental pollution problems caused by nitrogen through resource recycling.

1 is a graph showing ammonia removal efficiency by chemical pretreatment of natural zeolite.
2 is a photograph of a powder form of ammonia adsorption and antibacterial composition according to an embodiment of the present invention.
3 is a photograph of an ammonia adsorption and antibacterial composition according to another embodiment of the present invention prepared in a ring shape, and then installed after filling the adsorption net.
4 is a result of ammonia adsorption and antibacterial ability evaluation test results of the antibacterial composition according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail.

One aspect of the present invention provides an ammonia adsorption and antibacterial composition comprising 10 to 80% by weight of natural zeolite, 10 to 80% by weight of modified zeolite, and 5 to 15% by weight of antibacterial zeolite.

Conventionally, in order to remove odors caused by ammonia, porous ash, clay, buckwheat, stevia, etc., are bonded to natural or synthetic zeolites with a binder, dried, and then pulverized to be applied, but porous ash and clay In the case of such as, there was a problem that standardization in the manufacturing process was difficult because the properties and specifications of the material were not constant during the collection process.In the case of vegetable ingredients, buckwheat and stevia, etc., additional wastes are accompanied by a decay process as the period elapses in the manufacturing process. There was a problem to be dealt with. However, in the case of the composition of the present invention, since the composition is made of only zeolites, the properties and specifications of the material are relatively constant during the collection process, so that the standardization of the composition is facilitated and the antibacterial zeolite is included so that there is no problem of decay over the manufacturing period. do.

When the content of the natural zeolite is less than 10% by weight, odor removal performance may be deteriorated due to a decrease in the adsorption capacity of ammonia. In addition, when the content of the natural zeolite exceeds 80% by weight, the antibacterial ability of the composition of the present invention may be lowered.

The modified zeolite may be a natural zeolite treated with sodium chloride (NaCl). More specifically, after ion-exchanging the natural zeolite in 1N NaCl aqueous solution for 8 hours, it is washed three or more times with water. Then, it is dried at 110° C. for 12 hours and then pulverized with 325 mesh. In this way, when natural zeolite is treated with sodium chloride, ammonia is more effectively adsorbed because ^{Na +} ions are more effectively ion-exchanged with ammonium ions (NH ₄ ⁺ ) than when natural zeolite itself is used due ^{to Na + present on the natural zeolite} Can be removed.

When the natural zeolite is acid-treated with 1N hydrochloric acid (HCl) solution for 2 hours, the natural zeolite is ion-exchanged in 1N sodium chloride (NaCl) solution for 8 hours, washed three times with water, and dried at 110° C. for 12 hours, The ammonia adsorption rate was compared when both acid and sodium chloride were treated by the above two methods.

In the case of acid treatment of natural zeolite, the ammonia removal efficiency decreased sharply, which is believed to be due to the rapid decrease in the ion exchange capacity due to the decrease in Al due to dealumination. Pretreatment with sodium chloride (NaCl) aqueous solution and drying showed the best ammonia removal efficiency. (See Fig. 1)

The natural zeolite may be clinoptilolite.

Natural zeolite is a natural mineral that has various industrially useful physicochemical properties due to its unique pore structure connected by surface pores in the crystal structure, and is one of the basic units of silicate minerals (Si, All the oxygens in the Al)O4 tetrahedron are shared by another tetrahedron, forming a structure of a tetrahedral mineral that is connected in three dimensions. In addition, natural zeolite has a coarse lattice structure such that large pores of 2.3-7.5 Å are formed in the crystal, and the size of the pores is an oxygen ring formed at the entrance of the structural pores of 4 to 12 oxygens bonded to Si or Al. It is determined by its shape and the number of intervening oxygen.

In particular, natural zeolites are collected in the form of “zeolitic tuff” in which most fine-grained tuffs have been altered, and hydrous silicate containing a small amount of Na, K, Ca, Mg, Sr or Ba as cations in terms of chemical composition. As a mineral, the types are clinoptilolite, mordenite, heulandite, phillipsite, erionite, chabazite, and ferrierite ( ferrierite), etc. The natural zeolite obtained from nature has excellent cation exchange ability and excellent ammonia and heavy metal adsorption ability, etc. The kind of natural zeolite is not particularly limited, but is preferably clinoptilo Use clinoptilolite.

Among the natural zeolites, clinoptilolite may have a Cation Exchange Capacity (C.E.C) of 110 meq/g or more. When the cation exchange capacity is less than 110 meq/g, the ammonia adsorption rate of the composition of the present invention may be very low to less than 80%.

The antibacterial zeolite may be obtained ^{by introducing an NH4+} -based compound into a synthetic zeolite. Preferably, Dicetyl Dimethyl Ammonium Chloride, which ^{is an NH4+} -based compound, is introduced into the 4A-based synthetic zeolite. ^{In this case, by introducing NH4 +} -based compounds with antibacterial functions into the zeolite, it is possible to semi-permanently adsorb various harmful gases including ammonia and formaldihyde, and in parallel with this, NH ₄ ⁺ existing on the outer surface of the zeolite, the cell membrane of this microorganism. It has antibacterial properties because it acts on and exerts a growth inhibition and eradication effect. (See Measurement Example 2 and Fig. 4)

The ammonia adsorption and antibacterial composition may be in a ring shape. In the case of the ground layer from the ground to a height of about 1.5 m above the ground, it is strongly influenced by the condition of the ground or features, so there is a slight difference in the climatic condition.Therefore, it is recommended to install an adsorption net within 1.5 m from the floor in parallel with spraying the inside of the barn. It's efficient. In addition, since the adsorption and antibacterial composition filled in the adsorption net is installed at a certain height above the ground, it is likely to be scattered, and it is desirable to increase the diameter of the ring manufactured and manufactured in a ring shape to 3 mm. In addition, by using the composition of the present invention prepared in the form of a ring at home, filling the onion net with the remaining onion net, and installing it inside the barn, it is possible to more efficiently increase the ammonia adsorption removal rate inside the barn. (See Fig. 3)

Another aspect of the present invention is the step of (a) selecting a natural zeolite; (b) preparing a modified zeolite; (c) preparing an antibacterial zeolite by introducing an NH4+ compound to the synthetic zeolite; (d) it provides a method for preparing an ammonia adsorption and antibacterial composition comprising mixing zeolites selected or prepared in steps (a), (b), and (c).

In step (b), the natural zeolite may be treated with sodium chloride (NaCl). More specifically, after ion-exchanging the natural zeolite in 1N sodium chloride (NaCl) aqueous solution for 8 hours, it is washed three or more times with water. Then, it is dried at 110° C. for 12 hours and then pulverized with 325 mesh. In this way, when natural zeolite is treated with sodium chloride, ammonia is adsorbed and removed more effectively because _{ammonium ion (NH 4} ⁺ ) is ^{more effectively ion-exchanged with Na +} than when using the natural zeolite itself due ^{to Na + present on the natural zeolite.} Can be.

When the natural zeolite is acid-treated with 1N hydrochloric acid (HCl) solution for 2 hours, the natural zeolite is ion-exchanged in 1N sodium chloride (NaCl) solution for 8 hours, washed three times with water, and dried at 110° C. for 12 hours, The ammonia adsorption rate was compared when both acid and sodium chloride were treated by the above two methods. In the case of acid treatment of natural zeolite, the ammonia removal efficiency decreased sharply, which is believed to be due to the rapid decrease in the ion exchange capacity due to the decrease in Al due to dealumination. Pretreatment with NaCl aqueous solution and drying showed the best ammonia removal efficiency. (See Fig. 1)

The natural zeolite may be clinoptilolite.

Natural zeolites are mostly collected in the form of "zeolitic tuff" in which fine-grained tuff has been altered. In terms of chemical composition, it is a hydrous silicate mineral containing a small amount of Na, K, Ca, Mg, Sr or Ba as cations. , The types are clinoptilolite, mordenite, heulandite, phillipsite, erionite, chabazite and ferrierite. In the case of natural zeolites collected from nature, the cation exchange ability is very excellent, and thus the ability to adsorb ammonia and heavy metals is excellent. The kind of natural zeolite is not particularly limited, but is preferably clinoptilolite ( clinoptilolite).

Among the natural zeolites, clinoptilolite may have a Cation Exchange Capacity (C.E.C) of 110 meq/g or more. When the cation exchange capacity is less than 110 meq/g, the ammonia adsorption rate of the composition of the present invention may be very low to less than 80%.

In the step (c), Dicetyl Dimethyl Ammonium Chloride, which ^{is an NH 4 + compound, may be introduced into the 4A-based synthetic zeolite. In this case, by introducing NH4 +} -based compounds with antibacterial functions into the zeolite, it is possible to semi-permanently adsorb various harmful gases including ammonia and formaldihyde, and in parallel with this, NH ₄ ⁺ existing on the outer surface of the zeolite, the cell membrane of this microorganism. It has antibacterial properties because it acts on and exerts a growth inhibition and eradication effect. (See Measurement Example 2 and Fig. 4)

In the step (d), 10 to 80% by weight of natural zeolite, 10 to 80% by weight of modified zeolite, and 5 to 15% by weight of antibacterial zeolite may be mixed.

Conventionally, in order to remove odors caused by ammonia, porous ash, clay, buckwheat, stevia, etc., are bonded to natural or synthetic zeolites with a binder, dried, and then pulverized to be applied, but porous ash and clay In the case of such as, there was a problem that standardization in the manufacturing process was difficult because the properties and specifications of the material were not constant during the collection process.In the case of vegetable ingredients, buckwheat and stevia, etc., additional wastes are accompanied by a decay process as the period elapses in the manufacturing process. There was a problem to be dealt with. However, in the case of the composition of the present invention, since the composition is made of only zeolites, the properties and specifications of the material are relatively constant during the collection process, so that the standardization of the composition is facilitated and the antibacterial zeolite is included so that there is no problem of decay over the manufacturing period. do.

When the content of the natural zeolite is less than 10% by weight, odor removal performance may be deteriorated due to a decrease in the adsorption capacity of ammonia. In addition, when the content of the natural zeolite exceeds 80% by weight, the antibacterial ability of the composition of the present invention may be lowered.

Another aspect of the present invention provides a nitrogen-based fertilizer comprising the ammonia adsorption and antibacterial composition. In the case of the composition of the present invention adsorbing ammonia, it may be used as a fertilizer as it is. The zeolite collected after being sprayed on the barn floor or the zeolite that has been sprayed is inhaled by livestock _{to adsorb excess ammonia (NH 3} ) in the digestive tract and then excreted animal manure is used as fertilizer by mixing with new zeolite as it is. Can be done.

In the case of a nitrogen-based fertilizer containing the ammonia adsorption and antibacterial composition, it may be used as a slow release fertilizer (SRF). In the case of unauthorized disposal of the composition of the present invention adsorbing ammonia, it may cause a problem of overnutrition in the environment, resulting in red tide and green algae. Therefore, when the composition of the present invention adsorbing ammonia is used as a slow release ferilizer (SRF) that slowly releases a nitrogen source, it is possible to protect the environment while pursuing the growth of crops.

Hereinafter, the present invention will be described in more detail through examples. These examples are for illustrative purposes only, and it will be apparent to those of ordinary skill in the art that the scope of the present invention is not construed as being limited by these examples.

Example 1. Adsorption and preparation method of antibacterial composition

As the natural zeolite, Zeo-300 Clinoptilolite with a C.E.C (Cation Exchange Capacity) value of 110 or higher was selected from Lexem.

The modified zeolite was prepared in the following order.

After adding 300 g of a natural zeolite, Lexem's Zeo-300 Clinoptilolite, to 3 liters of 1N sodium chloride (NaCl) aqueous solution, ion exchange was performed by stirring at room temperature for 8 hours. Then, it was washed three times with a total of 9 liters of water, and the water in the upper layer was removed each time. Then, after finally filtering, the zeolite reaction product containing moisture was dried at 110° C. for 12 hours or more, and the dried zeolite was pulverized into 325 mesh to prepare.

Antibacterial zeolite was prepared in the following order.

500 g of zeolite 4A type was added to a 5-liter flask reactor together with 5 L of distilled water, followed by stirring. Then, 34.5 g of dicetyl dimethyl ammonium chloride-75% aqueous solution (75% of Dicetyl Dimethyl Ammonium Chloride) was added to the reactor, followed by stirring at 90° C. at 120 RPM for 24 hours or more to react. After completion of the reaction, the reaction mixture was cooled to 40° C., filtered through a 10 μm filter network, and the filtered zeolite reaction product was washed 3 times with 6 L of distilled water and then washed once with 1.5 L of ethanol. Then, after re-filtering with a 10 μm filter net, dried in a drying furnace at 90° C. for 24 hours, and the dried zeolite was pulverized into 325 mesh to prepare.

Then, the zeolites prepared above were weighed and blended. That is, 1600 g of natural zeolite, Zeo-300, 200 g of modified zeolite, and 200 g of antibacterial zeolite were uniformly dispersed for 2 hours or more at 120 rpm in a disperser (kneader), respectively. Thereafter, the dispersed blend was taken out by a transfer screw, and finally, ammonia adsorption and antibacterial composition in the form of a uniform white dispersion was prepared. (See Fig. 2)

Example 2

Ammonia adsorption and antibacterial composition was prepared in the same manner as in Example 1, except that 1200 g of natural zeolite Zeolite and 600 g of modified zeolite were used.

Example 3

Ammonia adsorption and antibacterial composition was prepared in the same manner as in Example 1, except that 800 g of natural zeolite Zeolite and 1000 g of modified zeolite were used.

Example 4

Ammonia adsorption and antibacterial composition was prepared in the same manner as in Example 1, except that 600 g of natural zeolite Zeolite and 1200 g of modified zeolite were used.

Example 5

Ammonia adsorption and antibacterial composition was prepared in the same manner as in Example 1, except that 200 g of natural zeolite Zeolite and 1600 g of modified zeolite were used.

Example 6

A mixture of the ammonia adsorption and antibacterial composition prepared in Example 1 and water in a weight ratio of 5:1 was prepared with a circulator to have a diameter of 2 to 3 mm, and then at 80 to 120°C. After drying for 3 to 5 hours, it was made into rings.

The compositions of the adsorption and antibacterial compositions prepared in Examples 1 to 6 are summarized in Table 1 below.

Ingredients Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Weight g
(Weight percent wt %) Natural zeolite 1600 (80) 1200 (60) 800
(40) 600
(30) 200
(10) 1600
(80) Modified zeolite 200
(10) 600
(30) 1000
(50) 1200
(60) 1600
(80) 200
(10) Antibacterial zeolite 200
(10)

Measurement example 1. The odor-causing substance of ammonia Adsorption rate (Deodorization rate) evaluation

Ammonia adsorption (deodorization) experiment was performed using the adsorption and antibacterial compositions prepared in Examples 1 to 6 above. The test method for analyzing the adsorption (deodorization) rate of ammonia was performed by KS I 2218.

50 g of the ammonia adsorption and antibacterial composition prepared according to Examples 1 to 6 was added to a 5 L Flask, which is a closed chamber that does not react with gas. Then, 4 mℓ of ammonia was taken with a pipette, etc., and put into the flask wall, and then left in an oven at 30° C. for about 30 minutes to evaporate ammonia in the flask to maintain an equilibrium state. Then, 100 ml of gas in the flask was taken with an adsorption pump, and the adsorption (deodorization) rate of ammonia was checked using a separate detection tube.

Analysis item Ammonia adsorption rate (deodorization rate) and re-release rate (%) by elapsed period 2 hours 48 hours 2 weeks
(336 hours) 4 weeks
(672 hours) 8 weeks
(1,344 hours) Example 1 94.2 98.0 98.0 29.4
(68.6) 20.6
(77.4) Example 2 92.1 95.9 95.3 38.7
(56.6) 23.5
(71.8) Example 3 90.8 93.4 93.0 45.2
(47.8) 37.7
(55.3) Example 4 88.6 92.1 92.5 60.1
(32.4) 50.5
(42.0) Example 5 84.5 89.0 90.9 65.4
(25.5) 54.0
(36.9) Example 6 91.3 95.5 94.5 32.1
(62.4) 28.5
(66.0)

※ () corresponds to the ammonia re-release rate.

In general, two mechanisms, namely film diffusion and particle diffusion, dominate the ion exchange rate in zeolite. Membrane diffusion means that adsorbed ammonia is diffused on the particle surface through the Stagnant Boundary Layer, and particle diffusion means that ammonia diffuses from the particle to the adsorption site. Particle diffusion controls the adsorption rate. Therefore, in zeolite, early rapid adsorption occurs first, followed by slow adsorption. Therefore, looking at the example data in Table 2, it can be seen that most of the adsorption is performed within the initial 2 days of the total adsorption period of 2 weeks.

Looking at the results of the adsorption and deodorization rate test, the highest deodorization rate was shown on the second day of the total adsorption period of two weeks, so it can be seen that the higher the content of natural zeolite, the higher the adsorption and deodorization rate. On the other hand, in the results of the re-release rate test for more than 4 weeks, the re-release rate increases as the content of natural zeolite increases. In addition, it can be seen that the re-release rate is relatively low in the case of the embodiment having a large content of the modified zeolite that gradually releases a nitrogen source while maintaining adequate hydrophobicity. Therefore, it may be selected by referring to the formulation of Examples 1 to 5 according to the cycle of discarding and treating the previously used adsorption deodorant after adsorption deodorization.

In addition, in the case of using the composition in the form of an adsorption ring of Example 6, it was prepared in the same formulation as in Example 1, but the initial adsorption and deodorization rate was slightly lower than that of Example 1 as the surface area decreased while being produced as a ring. It can be seen that the emission rate is also decreasing.

Meanwhile, since various zeolites adsorbed with ammonia as described above can cause many problems in the environment when discarded without permission, it is preferable to use them as a fertilizer containing a nitrogen source from the viewpoint of recycling resources. The point to consider at this time is that re-release of adsorbed ammonia in a short period of time can cause overnutrition in the agricultural environment. Therefore, it is generally necessary to apply a slow release fertilizer (SRF) that slowly releases nitrogen sources. It is believed that environmental protection can be achieved at the same time.

Measurement example 2. Evaluation of antibacterial ability

Antimicrobial ability evaluation experiments were conducted using the adsorption and antibacterial compositions prepared in Examples 1 to 6. The test method for evaluating the antimicrobial ability was performed by KCL-FIR-1002:2011, and the test results as shown in FIG. 5 were confirmed.

As a result of testing the bacterial reduction rate against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus by using the antibacterial spray method of the prepared composition, the produced prototype showed a 99.9% reduction in bacteria after 24 hours after all three strains decreased the number of bacteria.

Claims (10)

As ammonia adsorption and antibacterial composition,
Including 80% by weight of natural zeolite, clinoptilolite, 10% by weight of modified zeolite, and 10% by weight of antibacterial zeolite,
The modified zeolite is a natural zeolite, clinoptilolite, which is treated with sodium chloride (NaCl), and the antibacterial zeolite is a synthetic zeolite containing an NH ₄ +-based compound, and constitutes the natural zeolite and the modified zeolite. Clinoptilolite is ammonia adsorption and antibacterial composition, characterized in that the cation exchange ability is 110 or more.
delete delete delete delete (a) selecting a natural zeolite;
(b) preparing a modified zeolite;
(c) preparing an antibacterial zeolite by introducing an _{NH 4 +-based compound to the synthetic zeolite;}
(d) mixing the zeolites selected or prepared in steps (a), (b), and (c),
The natural zeolite of step (a) is clinoptilolite having a cation exchange capacity of 110 or more, and step (b) is a natural zeolite, clinoptilolite having a cation exchange capacity of 110 or more, and sodium chloride (NaCl ) Treatment, and in the step (d), 80% by weight of natural zeolite, 10% by weight of modified zeolite, and 10% by weight of antibacterial zeolite are mixed.
delete delete delete delete

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