Deodorant and deodorizing method

Abstract

To provide a deodorant that effectively inhibits generation of odor from an odor source to decrease odor, and a deodorizing method employing the deodorant.SOLUTION: A deodorant containing bentonite and zeolite in a mass ratio of 65:35 to 85:15, wherein the particle diameter of the bentonite is 0.106 to 3.35 mm and the particle diameter of the zeolite is 0.106 to 3.35 mm, the deodorant designed to decrease odor by spraying onto an odor source.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a deodorizer and a deodorizing method. [Background technology]

[0002] Physical deodorization (adsorption), one method for reducing or eliminating unpleasant odors (bad odors), involves adsorbing odorous substances into the pores on the surface of porous materials (deodorizers) such as activated carbon, alumina, and zeolite. Zeolite, in particular, is known to have relatively high adsorption capacity for basic gases such as ammonia and trimethylamine, and acidic odorous gases such as isovaleric acid and acetic acid. However, zeolite exhibits poor adsorption capacity for sulfur-containing odorous gases such as hydrogen sulfide and methyl mercaptan, and aldehyde gases such as acetaldehyde and formaldehyde, demonstrating selectivity in the odorous substances it can adsorb. Therefore, there is a need for the development of deodorizers that can effectively adsorb a wider range of odorous substances. For example, Patent Document 1 discloses a deodorizer characterized by carrying a compound having an NH group and / or an NH group in the molecule and / or one or more metal ions selected from the group consisting of copper, zinc, nickel, cobalt, and manganese on an artificial zeolite. By carrying one or more metal ions selected from the group consisting of copper, zinc, nickel, cobalt, and manganese on the artificial zeolite, this deodorizer has significantly improved deodorizing performance against sulfur-containing malodorous gases such as hydrogen sulfide and methyl mercaptan. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-116093 Summary of the Invention [Problem to be solved by the invention]

[0004] Methods of reducing and eliminating malodors using freestanding deodorizers and methods of deodorizing by ventilating malodors through columns or cartridges are effective for deodorizing a relatively small space after the odor source has been removed, but if the odor source is left unattended, odor removal in the surrounding area will be insufficient. Furthermore, the materials used in the deodorizer described in Patent Document 1 are expensive, and there is room for the development of a cheaper deodorizer that can adsorb a wider range of odorous substances.

[0005] An object of the present invention is to provide a deodorizer that can effectively suppress the generation of odor from an odor source and reduce odor. Another object of the present invention is to provide a deodorizing method using the deodorizer. [Means for solving the problem]

[0006] The present inventors have conducted extensive research in light of the above-mentioned problems. As a result, they have found that odors such as ammonia odor and hydrogen sulfide odor can be effectively reduced by combining bentonite and zeolite having specific particle sizes in a specific blending ratio to form a deodorizing agent and spraying it on the odor source. The present invention was completed based on these findings.

[0007] The above-mentioned problems of the present invention have been solved by the following means. [1] It contains bentonite and zeolite in a mass ratio of 65:35 to 85:15. The particle size of the bentonite is 0.106 to 3.35 mm, The particle size of the zeolite is 0.106 to 3.35 mm, A deodorizer that is sprayed on the source of odor to reduce it. [2] The deodorizer according to [1] above, wherein the particle size of the bentonite is 0.30 to 0.85 mm. [3] The deodorizer according to [1] or [2], wherein the total amount of the bentonite and the zeolite in the deodorizer is 50 mass % or more. [4] The deodorizer according to any one of [1] to [3] above, wherein the odor is an odor derived from ammonia, hydrogen sulfide, and / or methyl mercaptan. [5] A deodorizing method comprising spraying the deodorizer according to any one of [1] to [4] above onto an odor source to reduce the odor. [6] The deodorizing method according to [5], wherein the odor source is diapers or food waste. [Effects of the Invention]

[0008] The deodorizer of the present invention can effectively suppress the generation of odor from the odor source, thereby reducing odor. Furthermore, according to the deodorizing method of the present invention, by spraying the deodorizer of the present invention on the source of odor, the generation of odor can be effectively suppressed and the odor can be reduced.

[0009] A preferred embodiment of the present invention will be described below, but the present invention is not limited to the following embodiment except as defined by the present invention.

[0010] [Deodorizer] A first aspect of the present invention is a deodorizer (hereinafter also referred to as "the deodorizer of the present invention") that contains bentonite and zeolite in a ratio of 65:35 to 85:15 by mass, wherein the bentonite has a particle size of 0.106 to 3.35 mm and the zeolite has a particle size of 0.106 to 3.35 mm, and that is intended to be sprayed on an odor source to reduce odors. The deodorizer of the present invention is a mixture containing the active ingredients, bentonite and zeolite, in a specific mass ratio. In the present invention and this specification, the term "mixture" refers to a homogeneous or substantially homogeneous mixture of the components constituting the deodorizer of the present invention.

[0011] The deodorizer of the present invention, when sprayed on an odor source, exhibits a remarkable deodorizing effect against a wide range of odors. The specific mechanism by which the deodorizer of the present invention exhibits a remarkable deodorizing effect is unclear, but is presumed to be as follows: Both bentonite and zeolite are materials with the adsorption capacity to adsorb odorous substances. By adjusting the particle size of bentonite or zeolite to fall within a specific size range and spraying it on an odor source as a deodorizer, it is possible to achieve both an appropriate degree of coverage of the odor source and a sufficient surface area for adsorbing odorous substances, thereby achieving efficient deodorization. If the particle size is larger than the size specified in the present invention, the odor generated from the odor source cannot be suppressed. On the other hand, if the particle size is smaller than the size specified in the present invention, the particles will accumulate flat when sprayed, reducing the proportion of the deodorizer that can directly contact the odor, resulting in poor overall adsorption (deodorizing) ability. Furthermore, because bentonite and zeolite each have a certain degree of selectivity in the odorous substances they can adsorb, combining them in a specific ratio can effectively adsorb a wider range of odorous substances. Furthermore, when the odor source contains water, bentonite that comes into contact with the odor source absorbs the water, slowing the progression of putrefaction and suppressing odor generation. Furthermore, the bentonite swells and gels at the point of contact with the odor source, providing a high coating effect and preventing odors from leaking outside the coated deodorant. Furthermore, by setting the lower limit of the particle size of the bentonite and zeolite to 0.106 mm, dust generation due to scattering can be suppressed and the deodorant can be easily sprayed on the odor source.

[0012] Examples of odors that can be deodorized by the deodorizer of the present invention include odors derived from odorous substances such as ammonia, hydrogen sulfide, methyl mercaptan, methyl disulfide, methyl sulfide, trimethylamine, acetaldehyde, propionaldehyde, normal butyraldehyde, normal valeraldehyde, isovaleraldehyde, isobutanol, isobutyraldehyde, ethyl acetate, methyl isobutyl ketone, toluene, styrene, xylene, propionic acid, normal butyric acid, normal valeric acid, isovaleric acid, etc. The odors are preferably derived from ammonia, hydrogen sulfide, and / or methyl mercaptan, and more preferably from ammonia or hydrogen sulfide. Furthermore, examples of odor sources containing the above-mentioned odorous substances include food waste, excrement (including diapers, etc.), and the like.

[0013] The components of the deodorant of the present invention will be described in detail below.

[0014] (bentonite) Bentonite functions as an active ingredient in the deodorizer of the present invention. Bentonite itself has excellent adsorption capacity for adsorbing odorous substances and has the property of absorbing water and gelling. Bentonite is a clay whose main component is montmorillonite, a type of layered silicate mineral primarily composed of silica and alumina, and which generally contains quartz, cristobalite, zeolite, feldspar, and the like as impurities. In the present invention, the term "bentonite" is used in a broader sense than usual. That is, it may be naturally occurring bentonite, purified bentonite (preferably purified montmorillonite) obtained by purifying naturally occurring bentonite, or synthetic montmorillonite. It may also be a pulverized product of any of these bentonites.

[0015] The synthetic montmorillonite can be synthesized by conventional methods. For example, starting materials are mixed in the desired composition ratio to prepare a starting gel, and this gel is then subjected to hydrothermal treatment to synthesize montmorillonite. The hydrothermal synthesis method can be carried out using a Moray-type reaction vessel or an autoclave. Furthermore, by appropriately adjusting the composition of the starting materials during synthesis using conventional methods, the cation exchange capacity (CEC) of the resulting synthetic montmorillonite can be adjusted to a desired level.

[0016] The content of the montmorillonite in the bentonite is preferably 50% by mass or more, more preferably 60% by mass or more, and may also be 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, or 99% by mass or more.

[0017] Montmorillonite has a layered structure consisting of thin plate-like crystals approximately 1 nm thick stacked one on top of the other, and cations such as alkali metals and alkaline earth metals are generally present between the crystal layers. There are no particular limitations on the cations present between the montmorillonite crystal layers in the bentonite used in the present invention. For example, one or more types of bentonite selected from the group consisting of Na (sodium), Li (lithium), K (potassium), NH4 (ammonium), Ca (calcium), Mg (magnesium), Ba (barium), Al (aluminum), Fe (iron), Cu (copper), and Zn (zinc) bentonites can be used. Among these, the bentonite is preferably Na- or Ca-type. As used herein, "major interlayer cations" refers to cations that account for 50% (mol %) or more of the interlayer cations in the montmorillonite. The proportion of these cations may be 60% or more, 70% or more, 80% or more, or even 90% or more. Regarding the ion exchange method for the interlayer cations in bentonite, methods commonly used for ion exchange of bentonite can be applied.

[0018] In the present invention, the cation exchange capacity of the bentonite is preferably 40 meq (milliequivalent) or more per 100 g, more preferably 80 meq or more per 100 g, and even more preferably 100 meq or more per 100 g. The cation exchange capacity of the bentonite used in the present invention is typically 250 meq or less per 100 g. The cation exchange capacity of the bentonite can be measured by a method based on the Schollenberger method (Clay Handbook, Third Edition, edited by the Clay Science Society of Japan, May 2009, pp. 453-454). More specifically, it can be measured by the method described in JBAS-106-77, Standard Test Method of the Japan Bentonite Industry Association.

[0019] The shape of the bentonite is not particularly limited and can be appropriately selected as long as the effects of the present invention are not impaired. Examples include spherical, approximately spherical, spheroid, approximately spheroid, rectangular parallelepiped, and approximately rectangular parallelepiped. It can also be formed into a shape that can be molded using a general granulator (e.g., granules).

[0020] The bentonite has a particle size of 0.106 to 3.35 mm. In the present invention and this specification, bentonite having the above particle size range means bentonite of a size that passes through a sieve with an upper mesh size in a sieving test but does not pass through a sieve with a lower mesh size. For example, "bentonite having a particle size of 3.35 mm or less" means "bentonite that passes through a sieve with a 3.35 mm mesh size in a sieving test." Similarly, "bentonite having a particle size of 0.106 mm or more" means "bentonite that does not pass through a sieve with a 0.106 mm mesh size in a sieving test." Sieving of bentonite can be performed according to JIS Z8815:1994. The above particle size description also applies to zeolites, which will be described later. From the viewpoint of further improving the deodorizing effect, the particle diameter of the bentonite is preferably 2.00 mm or less, more preferably 1.00 mm or less, and more preferably 0.85 mm or less. From the same viewpoint as above, the particle diameter is preferably 0.15 mm or more, more preferably 0.212 mm or more, and even more preferably 0.30 mm or more. The preferred range is preferably 0.15 to 2.00 mm, more preferably 0.212 to 1.00 mm, and even more preferably 0.30 to 0.85 mm. By setting the particle diameter of the bentonite within the preferred range, when sprayed over an odor source, it is possible to achieve both an appropriate degree of coverage of the odor source and a high proportion of the deodorizer that can come into direct contact with the odor. The deodorizer of the present invention may contain bentonite having a particle size outside the above-mentioned particle size range, as long as the effects of the present invention are not impaired. The proportion of bentonite having a particle size outside the above-mentioned particle size range is preferably 10% by mass or less, more preferably 5% by mass or less, even more preferably 2% by mass or less, and even more preferably 1% by mass or less.

[0021] The moisture content of the bentonite is preferably 12% by mass or less, more preferably 8% by mass or less, and even more preferably 5% by mass or less. By controlling the moisture content within a low range, moisture in the odor source can be absorbed, suppressing odor generation and simultaneously gelling the bentonite to further increase the coverage. The moisture content can be measured, for example, using an infrared moisture meter at a measurement temperature of 105°C.

[0022] The pH of the bentonite is preferably 7.5 or higher, more preferably 8.0 or higher, and even more preferably 8.5 or higher. The pH is preferably 11.5 or lower, more preferably 11.0 or lower, and even more preferably 10.5 or lower. The pH can be measured by a method in accordance with the standard test method (JBAS-105-77) of the Japan Bentonite Industry Association.

[0023] The apparent specific gravity of the bentonite is preferably 0.40 or more, more preferably 0.60 or more, and even more preferably 0.80 or more. The apparent specific gravity is preferably 1.40 or less, more preferably 1.20 or less, and even more preferably 1.00 or less. The apparent specific gravity of bentonite can be measured, for example, by a method in accordance with JIS K5101:2004.

[0024] Examples of commercially available bentonite include Sieved Bentonite (trade name, manufactured by Kanben Mining Co., Ltd.) and Takara Bentonite (trade name, manufactured by Kanben Mining Co., Ltd.).

[0025] (Zeolite) Zeolite functions as an active ingredient in the deodorizer of the present invention, similar to the bentonite. The zeolite used in the deodorant of the present invention may be any zeolite commonly used in deodorants and air fresheners, except as specified below. For example, zeolites such as artificial zeolites, natural zeolites, and synthetic zeolites may be used. Silver-substituted zeolites in which sodium ions in zeolites are substituted with silver ions may also be used.

[0026] The shape of the zeolite is not particularly limited and can be appropriately selected within a range that does not impair the effects of the present invention. Examples include spherical, approximately spherical, spheroid, approximately spheroid, rectangular parallelepiped, and approximately rectangular parallelepiped shapes. The zeolite can also be formed into a shape that can be molded using a general granulator (e.g., granules).

[0027] The zeolite has a particle size of 0.106 to 3.35 mm. From the viewpoint of further improving the deodorizing effect, the particle size of the zeolite is preferably 2.00 mm or less, more preferably 1.00 mm or less, and more preferably 0.85 mm or less. From the same viewpoint, the particle size is preferably 0.15 mm or more, more preferably 0.212 mm or more, and even more preferably 0.30 mm or more. The preferred range is preferably 0.15 to 2.00 mm, more preferably 0.212 to 1.00 mm, and even more preferably 0.30 to 0.80 mm. By setting the particle size of the zeolite within the preferred range, when sprayed on an odor source, it is possible to achieve both an appropriate degree of coverage of the odor source and a higher proportion of the deodorizer that can directly contact the odor. The particle size can be measured using a method similar to that described for bentonite. The deodorizer of the present invention may contain zeolite having a particle size outside the above particle size range, as long as the effects of the present invention are not impaired. The proportion of zeolite having a particle size outside the above particle size range is preferably 10% by mass or less, more preferably 5% by mass or less, even more preferably 2% by mass or less, and even more preferably 1% by mass or less.

[0028] The water content of the zeolite is preferably 12% by mass or less, more preferably 8% by mass or less, and even more preferably 5% by mass or less. By controlling the water content to a low range, it is possible to absorb the water in the odor source and suppress the generation of odor. The water content can be measured, for example, using an infrared moisture meter at a measurement temperature of 105°C.

[0029] The apparent specific gravity of the zeolite is preferably 0.25 or more, more preferably 0.35 or more, and even more preferably 0.45 or more. The apparent specific gravity is preferably 0.75 or less, more preferably 0.65 or less, and even more preferably 0.55 or less. The apparent specific gravity can be measured by the same method as described for bentonite.

[0030] An example of a commercially available product of the zeolite is Nitto Zeolite No. 1 (trade name, manufactured by Nitto Funka Kogyo Co., Ltd.).

[0031] In the deodorizer of the present invention, the blending ratio of the bentonite to the zeolite is 65:35 to 85:15 by mass. From the viewpoint of further improving the deodorizing effect, the blending ratio is preferably 70:30 to 80:20, more preferably 71:29 to 79:21, even more preferably 72:28 to 78:22, and even more preferably 73:27 to 77:23.

[0032] Furthermore, the proportion (content) of the total amount of the bentonite and the zeolite in the deodorizer of the present invention is preferably 50% by mass or more, more preferably 60% by mass or more, even more preferably 70% by mass or more, even more preferably 80% by mass or more, even more preferably 90% by mass or more, and even more preferably 95% by mass or more.

[0033] (Other ingredients) The deodorant of the present invention may contain other components used in ordinary deodorants, such as fragrances, pigments, binders, etc., to the extent that the effects of the present invention are not impaired.

[0034] (Mixing method) In the deodorizer of the present invention, the method for mixing the bentonite and the zeolite is not particularly limited, and the bentonite and the zeolite can be mixed so as to be homogeneous or substantially homogeneous. For example, they can be mixed using a mixer or the like, or they can be mixed by filling the bentonite and the zeolite separately into a packaging container or the like described below and shaking the packaging container.

[0035] (packaging container) The deodorant of the present invention may be packaged in small portions in plastic bags or the like for easy portability, or may be filled in a container such as a plastic bottle.

[0036] [Deodorization method] According to a second aspect of the present invention, there is provided a deodorizing method (hereinafter also referred to as "the deodorizing method of the present invention") in which the deodorizer of the present invention is sprayed on an odor source to reduce odor.

[0037] In the odor removal method of the present invention, the deodorizer is preferably sprayed so as to cover the odor source. Examples of odorous substances and odor sources include those described above for the deodorizer of the present invention. When the odor source contains moisture, coating it with the deodorizer of the present invention causes the deodorizer to gel, thereby improving the degree of coverage. Furthermore, when the odor source is relatively dry (for example, moisture content is 30% or less), spraying water on the surface of the odor source in advance can cause the deodorizer of the present invention to gel upon contact with the odor source, further improving the degree of coverage. Furthermore, if segregation occurs in the deodorant, it can be used after being mixed appropriately to a homogeneous or substantially homogeneous state. [Example]

[0038] The present invention will be described in more detail below based on examples, but the present invention is not limited to these examples.

[0039] Test Example 1: Ammonia odor deodorization test-1 Filter paper (No. 131, diameter: 110 mm, manufactured by ADVANTEC) was placed in a round glass bottle (capacity: 2000 mL), 2 mL of 5% ammonia water was dropped onto the filter paper, and new filter paper was placed on top. Next, 40 g of each deodorizer was poured onto the filter paper and smoothed with a brush to cover the filter paper so that the filter paper was not exposed. The mouth of the glass bottle was sealed with a silicone stopper, and the ammonia concentration in the container after 20 minutes was measured using an ammonia detector tube (model number: Ammonia 3La or model number: Ammonia 3HM, both manufactured by Gastec). As a control test, a sample was left standing for 20 minutes without the deodorizer, and the ammonia concentration was measured in the same way. The results are shown in Table 1 below. Note that all "ppm" values ​​shown in this example are volume percentages. The deodorants used in Test Example 1 are as follows: Bentonite-1 (particle size: 2-3 mm, prepared by sieving crushed bentonite manufactured by Kanben Mining Co., Ltd.) Bentonite-2 (particle size: 1-2 mm, prepared by sieving crushed bentonite manufactured by Kanben Mining Co., Ltd.) Bentonite-3 (grain size: 0.30-0.85 mm, product name: granular, manufactured by Kanben Mining Co., Ltd.) Bentonite-4 (particle size: 1-260 μm, D50: 30 μm, product name: Tenryu, manufactured by Kanben Mining Co., Ltd.)

[0040] [Table 1]

[0041] As shown above, compared to the blank, the ammonia concentration was significantly reduced by using bentonite (-1 to 4) as a deodorizer. In particular, the residual ammonia concentration was lower in bentonite-3, with a particle size of 0.30 to 0.85 mm, than in bentonite-1 and 2, with particle sizes of 1 mm or more, and bentonite-4, with a particle size of 260 μm or less.

[0042] <Preparation Example> Each deodorant was prepared by blending bentonite and zeolite in a specific ratio. The materials used in blending each deodorant are as follows: Bentonite (product name: granular, particle size: 0.30-0.85 mm, manufactured by Kanben Mining Co., Ltd.) Zeolite (product name: Nitto Zeolite No. 1, particle size: up to 0.8 mm (typical value), mesh: up to 20 mesh, manufactured by Nitto Funka Kogyo Co., Ltd.) The formulation of each deodorant was as follows: Reference material 1: 100 parts by weight of bentonite, 0 parts by weight of zeolite Test sample 1: 75 parts by weight of bentonite, 25 parts by weight of zeolite Test sample 2: 50 parts by weight of bentonite, 50 parts by weight of zeolite Test sample 3: 25 parts by weight of bentonite, 75 parts by weight of zeolite Reference product 2: 0 parts by weight of bentonite, 100 parts by weight of zeolite For test samples 1 to 3, predetermined amounts of bentonite and zeolite were mixed by hand until uniformity was eliminated, thereby obtaining test samples 1 to 3. Using each of these deodorants, deodorization tests of Test Examples 2 to 4 were carried out.

[0043] Test Example 2: Ammonia odor deodorization test-2 200 ml of each deodorizer (Test Products 1-3, Reference Products 1 and 2) was placed in a round glass bottle (2000 ml capacity), 1 ml of 1.4% ammonia water was added, and the opening of the glass bottle was sealed with a silicone stopper. The ammonia concentration in the container after 2, 5, and 10 minutes was measured using an ammonia detector tube (Model: Ammonia 3La or Model: Ammonia 3HM, both manufactured by Gastec Corporation). As a control test, 1 ml of 1.4% ammonia water was added to the same glass bottle without deodorizer, and the opening of the glass bottle was sealed with a silicone stopper. The ammonia concentration in the container after 2, 5, and 10 minutes was measured (blank). The results are shown in Table 2 below.

[0044] [Table 2]

[0045] The ammonia odor deodorization test showed that all deodorizers were able to reduce the ammonia odor. Furthermore, the results of Reference Products 1 and 2 showed that zeolite was able to reduce the ammonia odor more effectively than bentonite. Next, among the deodorizers Test Products 1 to 3, which had adjusted ratios of bentonite and zeolite, Test Product 1 was shown to be the most effective at reducing the ammonia odor. In particular, despite Test Product 1 only containing 25 parts by mass of zeolite, it was able to reduce the ammonia odor to the same extent as Reference Product 2, which was composed solely of zeolite.

[0046] Test Example 3: Hydrogen sulfide odor deodorization test 200 ml of each deodorizer (Test Products 1-3, Reference Products 1 and 2) was placed in a round glass bottle (volume: 2000 ml). Hydrogen sulfide water was added dropwise to the bottle so that the concentration was 10 ppm immediately before the start of the blank test described below. The mouth of the glass bottle was sealed with a silicone stopper. The hydrogen sulfide concentration in the bottle was measured after 2, 5, and 10 minutes using a hydrogen sulfide detector tube (model number: 4LK, manufactured by Gastec Corporation). As a control test, hydrogen sulfide water was added dropwise to the same glass bottle without any deodorizer so that the concentration was 10 ppm immediately before the start of the test. The mouth of the glass bottle was sealed with a silicone stopper. The hydrogen sulfide concentration in the bottle was measured after 2, 5, and 10 minutes (blank). The results are shown in Table 3 below. [Table 3]

[0047] In the hydrogen sulfide odor deodorization test, the results of reference products 1 and 2 showed that bentonite was able to reduce the hydrogen sulfide odor more effectively than zeolite. Next, in the deodorizers test products 1 to 3, which had an adjusted blend ratio of bentonite and zeolite, test products 2 and 3 hardly reduced the hydrogen sulfide odor after 10 minutes of testing, while test product 1 reduced the hydrogen sulfide concentration by about half.

[0048] Test Example 4: Methyl mercaptan odor deodorization test A methyl mercaptan deodorization test was conducted based on "[II]-2 Deodorant Efficacy Test Method (Chemical Deodorization)" established by the Association of Deodorants and Aromatic Deodorizers. A 10-liter airbag (Fleck Sampler) equipped with a cock was filled with methyl mercaptan gas to a concentration of 8 ppm. Next, 10 g of the test sample 1 (75 parts by mass of bentonite, 25 parts by mass of zeolite) was added and sealed. The residual methyl mercaptan concentration was measured using a detector tube (model number: 70L, manufactured by Gastec Corporation) 30 minutes, 1 hour, 2 hours, 4 hours, and 24 hours after the start of the test. As a control test, the sample was left undisturbed without the deodorant, and the methyl mercaptan concentration was measured in the same manner (blank). The results are shown in Table 4 below.

[0049] [Table 4]

[0050] From Table 4, it is clear that the deodorizer of Test Product 1 can effectively reduce the odor of methyl mercaptan.

[0051] In this way, it was shown that by blending bentonite of a specific particle size and zeolite in a specific blending ratio range, it is possible to deodorize a wide range of odors while taking advantage of the respective properties of bentonite and zeolite.

Claims

1. The composition contains bentonite and zeolite in a ratio of 65:35 to 85:15 by mass, The particle size of the bentonite is 0.106 to 3.35 mm, The particle size of the zeolite is 0.106 to 3.35 mm, A deodorizer that is sprayed on the source of odor to reduce it.

2. 2. The deodorizer according to claim 1, wherein the particle size of the bentonite is 0.30 to 0.85 mm.

3. 3. The deodorizer according to claim 2, wherein the total amount of the bentonite and the zeolite in the deodorizer is 50 mass % or more.

4. The deodorizer according to claim 3, wherein the odor is an odor derived from ammonia, hydrogen sulfide, and / or methyl mercaptan.

5. A deodorizing method comprising spraying the deodorizer according to any one of claims 1 to 4 onto an odor source to reduce the odor.

6. The deodorizing method according to claim 5, wherein the odor source is diapers or food waste.

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