JP2023017721A - Deodorant formed by using mineral - Google Patents

Abstract

To provide a deodorant that can maintain deodorant effect for a long period of time, a deodorant having immediate effect in order to make it possible to quickly deodorize an installed space, and a deodorant from which odor is not released even in the case where the deodorant is heated after removing odor.SOLUTION: A deodorant removes or alleviate odor in air, and contains sandy or gravelly minerals, where the minerals are derived from granite and has magnetism.SELECTED DRAWING: Figure 1

Description

The present invention relates to an odor remover for removing or mitigating odors formed using minerals, and more particularly to an odor remover formed using sandy minerals having specific properties.

2. Description of the Related Art Nursing facilities, food processing factories, places where livestock and pets are raised, and the like generate odors, and the odors sometimes impair the comfort of life. Therefore, in the past, many techniques for deodorizing, deodorizing or preventing the generated odor have been proposed. For example, deodorants that remove or reduce odors by chemical or biological action, or deodorants that remove or reduce odors by physical action, etc. are used as agents for removing or reducing odors. .

However, deodorants that use the adsorption of odorous components to pores, such as activated carbon, have limits in their deodorizing capacity (i.e., adsorption capacity). It was difficult to expect a good deodorizing effect. Therefore, in order to use in large-scale facilities and to remove odors over the long term, deodorant removal using chemicals etc. is used. There were also issues such as the need to pay more attention in terms of

For example, Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2008-7919) proposes a composition having various sanitary functions such as deodorizing, antibacterial, and heat-retaining properties using silicate ore as a main raw material. In this document, as a composition mainly made of natural ore that decomposes harmful substances in the air, antibacterial deodorant, generates negative ions and emits far infrared rays effect, air cleaning function including silicate ore and cerium salt and It proposes compositions with various sanitary functions.

Further, in Patent Document 2 (Japanese Patent Application Laid-Open No. 2019-63432), as a method for producing a deodorizing material capable of obtaining a deodorizing material having higher deodorizing performance, an alkali is added to a hydrated magnesium silicate clay mineral. By contacting an aqueous solution of an aliphatic aminocarboxylic acid (excluding a diamino compound) whose pH is adjusted to be within the range of (pK2 + 0.2) to (pK2 + 1.7), the aliphatic aminocarboxylic acid is Molecules that are not large crystals or agglomerates bound to the metal ions on the outer surface and the inner surface of the pores by replacing with the water of crystallization coordinated to the metal ions on the outer surface and the inner surface of the pores of the hydrated magnesium silicate clay mineral. We have proposed a method for producing a deodorizing material that is supported in a uniform state and in a highly dispersed state.

JP 2008-7919 A JP 2019-63432 A

As described above, Patent Document 1 proposes an air cleaning composition using silicate ore and cerium salt. The purpose is to maintain the deodorizing effect by decomposing them with the power of negative ions. That is, since the malodorous components are adsorbed by the micropores of minerals, there is still room for improvement in terms of the persistence of the adsorption effect. Moreover, Patent Document 2 obtains the deodorizing effect of an aliphatic aminocarboxylic acid, and it is difficult to maintain the deodorizing effect over a long period of time.

Accordingly, one of the objects of the present invention is to provide an odor remover capable of maintaining its deodorizing effect for a long period of time. Another object is to provide an odor remover with immediate effect in order to deodorize the installation space quickly. Furthermore, another object is to provide an odor remover that does not emit odor even when heated after the odor has been removed. Another object is to provide an odor remover that can be used in the form of a solid (that is, a solid) such as powder or fluid.

The present invention solves at least one of the above problems by providing an odor remover formed by using a mineral, particularly a magnetic mineral, as a material for removing or mitigating odors.

That is, the present invention provides an odor remover for removing or mitigating odors in the air, which contains sand-like or gravel-like minerals, the minerals are derived from granite, and have magnetism. Provide odor removers.

Further, the mineral preferably has a dry bulk density of 1450 kg/m ³ or less, preferably 1300 kg/m ³ or less. This is because if the bulk density exceeds 1450 kg/m ³ , a rapid and sufficient odor removing effect cannot be exhibited.

Further, the mineral preferably has a maximum load of 250N or less, preferably 230N or less in a compressive strength test. This is because if the maximum load in the compressive strength test exceeds 250 N, a rapid and sufficient odor removing effect cannot be exhibited.

It is also desirable to use the mineral that adheres to a magnet having a magnetic density of less than 28,000 Gauss. This is because minerals that do not adhere to magnets having a magnetic density of less than 28,000 gauss make it difficult to rapidly obtain an odor removing effect. The mineral attached to such a magnet can be magnetized by attachment to the magnet, so the odor remover in the present invention may be a soft magnetic material as well as a hard magnetic material. Further, it is desirable that the mineral has a particle size of 1 μm to 4 mm. By setting the particle diameter to 1 μm to 4 mm, it is possible to obtain an easy handling and a rapid and sufficient odor removing effect.

The present invention provides an odor remover in which ascorbic acid is blended with granodiorite weathered granodiorite as the granite-derived mineral. In such an odor remover, the mixing ratio of minerals and ascorbic acid is desirably 30:70 to 90:10 (mineral:ascorbic acid), and particularly 30:70 to 80:20 (mass ratio). It is desirable to

In order to solve at least one of the above-described problems, the present invention provides a method for producing an odor remover according to the present invention, wherein minerals in a granite mining site are adsorbed and separated by a magnet, and are adsorbed to the magnet. To provide a method for producing an odor remover, comprising sieving the obtained minerals to obtain a particle size of 1 μm to 4 mm. The present invention also provides a method for producing an odor remover, which comprises adding ascorbic acid to granite soil obtained by weathering granodiorite as a mineral derived from granite. In the present invention, there is provided a method for producing an odor remover having magnetism by adding ascorbic acid to granite soil obtained by weathering granodiorite as a mineral derived from granite.

The odor remover according to the present invention is sand-like or gravel-like sand-like or gravel-like particles derived from granite, particularly granodiorite, and is formed by containing magnetic minerals. By bringing an odor into contact with such an odor remover, it is possible to obtain an odor remover capable of maintaining its deodorizing effect for a long period of time. By contacting the odor with the odor remover according to the present invention, the odor can be removed or alleviated more quickly than with activated carbon. Further, even when the face odor remover is heated after the odor is removed or alleviated by the odor remover according to the present invention, the odor remover can be made into an odor remover that does not emit odor.

Graph showing the measurement results of Experimental Example 2 Graph showing measurement results of Experimental Example 3 Graph showing measurement results of (A) ammonia concentration, (B) hydrogen sulfide concentration, and (C) formaldehyde concentration in Experimental Example 4 Graph showing measurement results of Experimental Example 5 (A) in Experimental Example 7 is the analysis result of only the petroleum ether solvent, (B) is the analysis result of 0.1% by volume of ammonia water dissolved in the petroleum ether solvent, and (C) is the result of dissolving the extracted gas. Graph showing analysis results of petroleum ether solvent Graph showing measurement results of Experimental Example 8 Graph showing measurement results of Experimental Example 9 Graph showing measurement results of Experimental Example 11 Graph showing measurement results of Experimental Example 11

The odor remover according to this embodiment will be specifically described below. The odor remover according to the present embodiment can be formed using minerals derived from granite and having magnetism (soft magnetic material and hard magnetic material). The mineral derived from granite may be granite itself or minerals obtained by weathering the granite.

The granite in the present embodiment has quartz, potassium feldspar, plagioclase, biotite, muscovite, and hornblende as main constituent minerals, and secondary component minerals such as magnetite, garnet, zircon, apatite, and pyroxene. May contain.

In addition, since granite has large crystal grains and different coefficients of thermal expansion of mineral crystals, the bonding between grains is weakened where there is a large temperature difference, and the surface tends to become fragile. Since quartz, which is the main component of such granite, is not easily weathered, as weathering progresses, it turns into sandy or gravel-like minerals while leaving coarse particles of the constituent minerals. In this embodiment, it is desirable to use granite that has been weathered in this way.

As described above, granite, which is sand (sand soil) formed by weathering granite, has large crystal particles and different coefficients of thermal expansion of mineral crystals, where the temperature difference is large, the bonding between particles is weakened. , It is easily weathered, and as the weathering progresses, it breaks apart while leaving coarse particles of the constituent minerals, making it very fragile and prone to crumbling. This includes particles of various sizes, such as gravel, sand, silt, and clay. Eventually, the gravel is weathered into silica sand, silt, and clay, resulting in coarse sandy particles. The particles are called "masa". The particle size of masa that can be used in the present embodiment is not particularly limited, and when the deodorant is used alone, even a relatively large particle size can be used.

As the granite-derived minerals used in the present embodiment, those having particular magnetism are selected and used. Odors in gases such as air can be effectively removed or alleviated by using the minerals that are magnetic. Since the odor remover is collected from granite that has become brittle due to advanced weathering, it is possible to select and extract magnetic minerals with a magnet or the like from minerals derived from sandy or gravel-like granite. can be formed.

The odor remover according to the embodiment can also be formed by blending ascorbic acid with granite-derived minerals, particularly granite, which is weathered granodiorite. The masago soil mixed with such ascorbic acid may or may not have magnetism. However, by blending ascorbic acid, the granite can be magnetized.

The odor remover according to the present embodiment uses minerals derived from granite alone, as well as hydrated magnesium silicate clay minerals such as talc, acid clay, kaolin, montmorillonite, rholite and zeolite, and tourmaline ore. etc., and furthermore, the granular or cobble-like active ingredient may be molded with a resin or the like.

The odor remover according to the present embodiment is provided by being filled in a container or bag formed of a sheet or fabric as it is, and is used in a state filled in the container or bag, or taken out from the container or bag. It can also be used in a spray state. Especially in facilities such as nursing homes, it is possible to use it by filling it in a container. The particles can also be molded with resin or the like. Further, sand-like minerals derived from the granite can be mixed during papermaking to form granules in which the minerals are blended in the paper.

In particular, the odor remover obtained by blending ascorbic acid with the masago soil can be produced as a solid powder or granules. It can be used by mixing with sand or the like. In this regard, in the case of the odor removing agent provided in a liquid form, the sand absorbs water, so the usefulness of the odor removing agent according to the present embodiment, which is solid and has a deodorizing effect, is high.

Experiments were conducted below to confirm the effect of removing or mitigating odors in gas by the odor removing agents according to the above-described embodiments.

[Experimental example 1]
In this experiment, we confirmed the difference in composition based on the difference in dry bulk density and maximum load in compressive strength tests for magnetic minerals derived from granite. Sample 1 used in this experiment was a magnetic mineral before weathering and had a dry bulk density of 1,625 kg/m ³ and a maximum load of 344 N. Sample 2 was a magnetic mineral before weathering and was dried. The bulk density was 1,291 kg/m ³ and the maximum load was 135N. Each component was measured using an energy dispersive X-ray fluorescence spectrometer (EDXL300, Rigaku). The results are shown in Table 1 below.

From the results of this experiment, it was confirmed that sample 2 contained more iron, manganese, and the like, and contained more oxygen than sample 1.

[Experimental example 2]
In this experiment, the two samples in Experimental Example 1 were used to confirm the deodorizing effect of ammonia. In the experimental method, 10 mg of each sample was sealed in a sample bag (trade name "Smart Bag PA" manufactured by GL Sciences Co., Ltd., volume 5 liters, hereinafter the same) as a gas-tight bag, and then added to 4 liters of pure nitrogen gas. Ammonia gas was introduced to 20 ppm. Then, it was allowed to stand, and after 2 hours and 24 hours, the ammonia gas residual concentration in the sample bag was measured using a detector tube. In addition, as a blank, the residual concentration of ammonia gas was also measured without enclosing the odor remover. The results are shown in FIG.

In sample 1, the ammonia concentration decreased to 17 pm after 2 hours and to 15.5 ppm after 24 hours. In Sample 2, the ammonia concentration decreased to 10 ppm after 2 hours and to 6 ppm after 24 hours. From this, it was confirmed that when the samples 1 and 2 were used, they greatly contributed to the effect of removing or mitigating the odor of ammonia gas within 2 hours after the start. In particular, when using a mineral with a dry bulk density of 1450 kg/m ³ or less and a maximum load of 250 N or less in the compressive strength test, as in sample 2, the ammonia gas odor was removed within 2 hours after the start. Or it was confirmed that the relaxation effect is excellent.

[Experimental example 3]
In this experiment, the same experiment as in Experimental Example 2 was performed. However, in this experiment, after 10 mg of each sample was sealed in a sample bag, ammonia gas was introduced into 3 liters of pure nitrogen gas so as to have a concentration of 100 ppm. The subsequent standing and measurement of the ammonia gas residual concentration are the same as in Experimental Example 2.

"Results and Discussion"
The results of the experiment are shown in FIG. In this experimental example, in sample 1, the ammonia concentration decreased to 95 ppm after 2 hours and to 88 ppm after 24 hours. In sample 2, the ammonia concentration decreased to 75 ppm after 2 hours and to 65 ppm after 24 hours. As a result, even if the ammonia gas concentration is 100 ppm, when the sample 1 and sample 2 are used, within 2 hours after the start, the effect of removing or mitigating the odor of ammonia gas is greatly contributed. It could be confirmed. In particular, when using a mineral with a dry bulk density of 1450 kg/m ³ or less and a maximum load of 250 N or less in the compressive strength test, as in sample 2, the ammonia gas odor was removed within 2 hours after the start. Or it was confirmed that the relaxation effect is excellent.

[Experimental Example 4]
In this experimental example, the deodorizing effects of ammonia, hydrogen sulfide and formaldehyde were confirmed for sample 2 described above. Specifically, the sample 2 (5 g) as a specimen was placed in a sample bag (25 cm x 40 cm, manufactured by Miyako Vinyl Processing Co., Ltd.), heat-sealed, and 3 liters of air was sealed therein. Ammonia water (28% by mass, special grade, manufactured by Komune Chemicals Co., Ltd.) was added with hydrogen sulfide (a gas generated by adding dilute sulfuric acid to iron sulfide) so that the gas concentration was about 200 ppm. and formaldehyde (special grade, manufactured by Komune Kagaku Yakuhin Co., Ltd.) to a gas concentration of 5 ppm. This was left at room temperature, and the gas concentrations of ammonia and formaldehyde in the sample bag after 10 minutes, 30 minutes and 60 minutes were measured with a gas detector tube (manufactured by GASTEC Co., Ltd.). As for hydrogen sulfide, the gas concentration in the sample bag was measured with a gas detector tube 10 minutes, 30 minutes, 60 minutes, 180 minutes and 360 minutes after leaving. A blank was obtained by carrying out the same operation without loading the sample 2.

"Results and Discussion"
The results of this experiment are shown in FIG. In this experiment, when the mineral (Sample 2) having the maximum load in the dry bulk density and compressive strength tests was used, as shown in FIG. A significant decrease in gas concentration was confirmed at Moreover, as shown in FIG. 3(B), even in the case of hydrogen sulfide, a rapid decrease in gas concentration was confirmed from the start to 180 minutes. As shown in FIG. 3(C), it was also confirmed that the formaldehyde gas concentration significantly decreased 10 minutes after the start of the experiment. Therefore, it was confirmed that Sample 2 was able to rapidly remove or mitigate odors.

[Experimental example 5]
In this experimental example, the performance (ammonia removal performance) of Sample 2 when used as cat litter was evaluated. Specifically, the sample bag was filled with about 300 ppm ammonia atmosphere gas and not filled with an odor remover, 5 g of sample 2 was filled, and commercially available cat litter containing cypress fragrance (manufactured by Hitachi Kako Co., Ltd., 5 g of commercially available cat litter containing bentonite components (trade name: "wooden cat litter") and 5 g of commercially available cat litter (trade name: "sand that removes odors", manufactured by Lion Trading Co., Ltd.) were prepared. Then, the gas concentration was measured with a detector tube after 1 hour for each.

"Results and Discussion"
The results of this experiment are shown in FIG. From this experiment, it was confirmed that Sample 2 removed or alleviated the odor of ammonia 1 hour after the start of the experiment. In addition, it was confirmed that this odor removing effect is equivalent to that of commercially available cat litter, and that the odor removing effect is higher than that of activated carbon, which has an odor adsorption effect.

[Experimental example 6]
In this experiment, a desorption test of ammonia, which is an odor component, was performed on the odor remover after odor removal. Specifically, an ammonia atmosphere gas of about 1000 ppm was prepared in an Erlenmeyer flask, filled with Sample 2 (5 g) as a specimen, and allowed to stand for 24 hours to confirm the ammonia saturated adsorption state. Also, as a comparative example, a sample in which activated carbon (5 g) was used instead of sample 2 was prepared. Then, the specimen in the ammonia saturated adsorption state and activated carbon (activated carbon powder manufactured by Wako Pure Chemical Industries, Ltd.) were transferred to a new Erlenmeyer flask, and the initial ammonia concentration in the Erlenmeyer flask was measured with a gas detector tube. Then, the specimen in the ammonia saturated adsorption state and the activated carbon in the Erlenmeyer flask were heated at 95° C. for 1 hour using a hot plate, and the concentration of ammonia in the Erlenmeyer flask after heating was measured with a gas detector tube.

"Results and Discussion"
The results of this experiment are shown in Table 2 below. As shown in Table 2 below, the initial concentration of ammonia was 40 ppm when Sample 2 was used, but decreased to 6 ppm after heating. Therefore, in sample 2, no desorption of ammonia was observed during heating, and rather, it was confirmed that adsorption was progressing. On the other hand, the initial concentration of ammonia when using activated carbon was 120 ppm, but increased to 200 ppm after heating. Therefore, it was confirmed that ammonia once adsorbed by activated carbon is desorbed by heating.

[Experimental Example 7]
In this experiment, the components after deodorization with the deodorant were confirmed. Specifically, 1 ml of ammonia was added dropwise to Sample 2 accommodated in a sample bag, and the gas after 24 hours was transferred to a gas collection bag (Tedlar bag) using a syringe. This was done multiple times to collect 1 liter of gas. This collected gas was injected in small portions into a petroleum ether solvent to dissolve the gas in the solvent. The obtained petroleum ether solvent was analyzed by gas chromatography (product name: Agilent 7820A). A mixture of hydrogen, nitrogen and oxygen was used as a carrier gas for gas chromatography, a DB-1 column (length 30 m×φ0.25 mm) for low-molecular-weight organic compounds was used, and the column temperature was 50°C. For comparison, the petroleum ether solvent alone and the petroleum ether solvent in which 0.1% by volume of ammonia water was dissolved were also analyzed by gas chromatography.

"Results and Discussion"
The results of this experiment are shown in FIG. Fig. 5(A) is the analysis result of only the petroleum ether solvent, Fig. 5(B) is the analysis result of 0.1% by volume of ammonia water dissolved in the petroleum ether solvent, Fig. 5(C) is the dissolved extracted gas It is the analysis result of petroleum ether solvent.

In the results of this experiment, in the analysis results of only the petroleum ether solvent (Fig. 5 (A)), a large peak of the solvent appeared around 7.5 minutes after the start, and pyrolysis gas was also generated 25 to 40 minutes after the start. appears between In addition, in the analysis results of 0.1% by volume of ammonia water dissolved in petroleum ether solvent (Fig. 5 (B)), before the large peak of the solvent (around 7.5 minutes after the start), 10 minutes after the start, and 14 minutes after the start New peaks appeared at the latter three locations, albeit small. This is believed to be ammonia and its thermal decomposition products. Then, in the analysis result of the petroleum ether solvent in which the extracted gas is dissolved, in FIG. 5(C), in addition to the experimental results shown in FIG. bottom. This is considered to be a component produced after ammonia is decomposed by the odor remover. Therefore, according to this experimental example, it was confirmed that the odor remover according to the present embodiment decomposed the ammonia component that causes odor.

[Experimental Example 8]
In this experiment, the odor removal effect was confirmed by the presence or absence of magnetism in minerals derived from granite. That is, minerals having a dry bulk density of 1450 kg/m ³ or less and a maximum load of 250 N or less in a compressive strength test are extracted from the collected granite-derived minerals, and minerals having magnetism (the same as sample 2 above) are extracted from them. , minerals that do not have magnetism (that is, non-magnetic minerals, sample 3) were extracted. Whether or not it has the magnetism is determined by using a machine made of a bipolar drum electromagnet of 20,000 Gauss to 28,000 Gauss, and what is attached to it is determined as a magnetic mineral, and what is not attached is determined as a magnetic mineral. minerals that do not have Then, the odor removing effect of ammonia was confirmed for each of them.

Specifically, after 10 mg of each sample (Sample 2 or 3) was sealed in a sample bag, ammonia gas was introduced into 3 liters of pure nitrogen gas so as to have a concentration of 100 ppm. After that, it was allowed to stand still, and the remaining concentration of ammonia gas was measured using a detector tube after 2 hours and 24 hours.

"Results and Discussion"
The results are shown in FIG. As is clear from FIG. 6, in sample 3 made of non-magnetic minerals, the ammonia gas concentration decreased to 80 ppm after 2 hours, and decreased to 65 ppm after 24 hours. Furthermore, in sample 2 made of magnetic mineral, the ammonia gas concentration decreased to 70 ppm after 2 hours, and decreased to 55 ppm after 24 hours. From this, for minerals that are derived from granite and have a dry bulk density of 1450 kg/m ³ or less and a maximum load of 250 N or less in the compressive strength test, especially those with magnetism, odor removal within 2 hours after the start It was confirmed that the effect is high. From this fact, it was confirmed that the magnetism of granite-derived minerals having the dry bulk density and compressive strength greatly contributes to the improvement of the odor removing ability for ammonia gas.

In this experiment, even in the blank where no odor remover was installed, the reason why the ammonia gas concentration decreased slightly two hours after the start of the experiment was that the ammonia component adhered to the inner surface of the sample bag. Conceivable. However, even in consideration of the adhesion of ammonia gas to the inner surface of the sample bag, samples 2 and 3 were able to confirm a sufficient and rapid odor removing effect.

[Experimental Example 9]
In this experiment, the same samples 2 and 3 as in Experimental Example 7 were used, 10 mg of each sample was sealed in a sample bag, and then ammonia gas was introduced into 3 liters of pure nitrogen gas so as to have a concentration of 20 ppm.

"Results and Discussion"
This result is shown in FIG. As is clear from FIG. 7, in sample 3 made of nonmagnetic minerals, the ammonia gas concentration did not change until 2 hours later, and then decreased to 15 ppm for up to 24 hours. Furthermore, in sample 2 made of magnetic mineral, the ammonia gas concentration decreased to 15 ppm two hours after the start of the experiment, and decreased to 10 ppm after 24 hours. From this, for minerals that are derived from granite and have a dry bulk density of 1450 kg/m ³ or less and a maximum load of 250 N or less in the compressive strength test, especially those with magnetism, odor removal within 2 hours after the start It was confirmed that the effect is high. From this fact, it was confirmed that the magnetism of granite-derived minerals having the dry bulk density and compressive strength greatly contributes to the improvement of the odor removing ability for ammonia gas.

In this experiment, in the blank where no odor remover was installed, the reason why the ammonia gas concentration decreased slightly after 2 hours after the start of the experiment was that the initial concentration of ammonia gas was low. It is thought that this is due to the gradual adherence of the ammonia component to the inner surface of the sample bag. On the other hand, in Experimental Example 7, since the initial concentration of ammonia gas was high, it is considered that the ammonia component adhered to the inner surface of the sample bag in the initial stage and did not adhere thereafter. However, even in consideration of the adhesion of ammonia gas to the inner surface of the sample bag, samples 2 and 3 were able to confirm a sufficient and rapid odor removing effect.

[Experimental Example 10]
In this experiment, as a mineral consisting of granite, granodiorite weathered granodiorite was used, and the deodorant effect of the deodorizing agent formed by blending ascorbic acid with this was confirmed. Specifically, the mixing ratio of mineral (masago soil) and ascorbic acid was changed to confirm the deodorizing effect over time.
This experiment was carried out using the detector tube method, which applied mutatis mutandis to the Deodorant Finished Textile Product Certification Standards Instrumental Analysis Test Method of the General Incorporated Association Textile Evaluation Technology Council. Ammonia gas (100 ppm) was enclosed as an odorous gas, and the gas concentration was measured with a detector tube after being left for a predetermined period of time.
Then, the odor reduction rate (%) was determined by "(Sb - Sm)/Sb x 100". Here, Sb: average value of blank test, Sm: average value of test sample, and the blank test was used as a comparison material by inserting petri dishes of ~.
Table 3 below shows the mixing ratio of minerals (masago soil) and ascorbic acid, the sample mass, the standing time (test time), and the odor reduction rate of the test samples used in Tests 1 to 8 in this experiment.

"Results and Discussion"
As is clear from Table 7, in the case of ascorbic acid alone (test number 1), ammonia gas decreased by only 40% even after 2 hours, while mineral: ascorbic acid = 30:70 (mass ratio) (Test No. 2), the decrease in ammonia gas after 2 hours was 79%. Further, when the blending ratio of minerals was increased (Test Nos. 3 and 4), the decrease in ammonia gas after 2 hours exceeded 95%. From the above, it was found that a sufficient deodorizing effect against ammonia is exhibited by setting the mineral (masago soil) and ascorbic acid at a mass ratio of mineral: ascorbic acid = 30:70 to 90:10. .
Furthermore, when blended with mineral: ascorbic acid = 70:30 (mass ratio) (test number 5) and when blended with mineral: ascorbic acid = 90:10 (mass ratio) (test number 6), the test It was found that the reduction rate of ammonia after 10 minutes from the start was 98% and 97%, respectively, realizing an odor remover with immediate effect.

[Experimental Example 11]
In this experiment, in relation to Test Nos. 5 and 6 of Experimental Example 10, the immediate effect of the odor removing effect was confirmed. That is, in this experimental example, 100 mg of each sample was sealed in a sample bag, and ammonia gas was introduced to 100 ppm with respect to 3 liters of pure nitrogen gas. After that, the sample bag was allowed to stand in an environment with a temperature of 24.6° C. and a humidity of 48%, and after 2 hours and 24 hours the remaining concentration of ammonia gas was measured using a detector tube. Samples were prepared by mixing amounts of ascorbic acid of 2%, 6% and 10% based on the mass of the mineral (masago soil). The results are shown in FIG. A similar experiment was conducted by replacing the ammonia gas with formaldehyde. The results are shown in FIG.

"Results and Discussion"
As shown in FIG. 8, in ammonia gas, in the sample (odor remover) containing ascorbic acid for minerals (masago soil), the residual concentration decreased significantly during the standing time of 2 hours. there is As a result, it was found that the odor remover can quickly reduce the ammonia odor. On the other hand, as shown in FIG. 9, it was found that the same sample (odor remover) could reduce the concentration of formaldehyde gas over time. In particular, the sample (odor remover) containing 10 wt % of ascorbic acid had a residual concentration of about half that of the blank after standing still for 24 hours.

The odor remover of the present invention can be used for removing or mitigating odor indoors and outdoors. Additionally, the odor eliminator can be used to eliminate or mitigate odors in nursing homes, pet and livestock areas.

Claims (4)

An odor remover that removes or alleviates odors in the air,
It contains sandy or gravelly minerals,
The deodorant is characterized in that the mineral is derived from granite and has magnetism.
The mineral has a dry bulk density of 1450 kg/m ³ or less, a maximum load of 250 N or less in a compressive strength test, a magnetism that adheres to a magnet having a magnetic density of less than 28,000 gauss, and a particle size of The odor remover according to claim 1, wherein is 1 μm to 4 mm.
3. The deodorant according to claim 1, wherein said mineral is granodiorite weathered granodiorite, and further contains ascorbic acid.
4. The deodorant remover according to claim 3, wherein the mixing ratio of said mineral and ascorbic acid is 30:70 to 90:10 in terms of mass ratio of mineral:ascorbic acid.

Images