JPH0647000B2 - Low concentration malodorous gas phase deodorant consisting of humus and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] Industrial field of application The present invention comprehensively deodorizes basic malodors such as ammonia and amines, acidic malodors such as hydrogen sulfide, and neutral malodors such as methylmercaptan and dimethyl sulfide. The present invention relates to a low-concentration malodorous gas phase deodorant composed of humus and its manufacturing method.

Conventional technology As a general deodorant for basic, acidic and neutral malodors, adsorption deodorization such as activated carbon, oxidative deodorization of iron salts of ascorbic acid, or combined deodorization of adsorption and oxidation by a combination of activated carbon and silver However, the deodorizing power is in the order of adsorption deodorization <oxidative deodorization <combined deodorization of adsorption and oxidation.

However, the deodorizing rate per weight of the deodorizing agent is between 2 and 5%, and it cannot be said that the deodorizing efficiency is good. In addition, exhaustion due to self-oxidation and deterioration of the catalyst due to components in the bad odor are observed at times other than when deodorizing, and problems remain in the maintenance and use of the deodorant and the method of use.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention has been made to solve the problems of the above-mentioned conventional deodorants, and the purpose thereof is to eliminate the malodor caused by an oxidizing agent that operates more strongly at room temperature. By combining a catalyst that directly improves the oxidation efficiency and draws out its ability, basicity,
The deodorant is assembled by adsorbing and concentrating the acidic and neutral malodors and providing it to the oxidant, and an auxiliary agent that prevents self-depletion and deterioration of the catalyst. Is an active humic substance, a silver salt active under strong acidity as a catalyst, activated carbon as an adsorption concentrating agent, nitric acid and a nonionic surfactant as an auxiliary agent,
It is an object of the present invention to provide a low-concentration malodorous gas phase deodorant comprising humus capable of comprehensively deodorizing a low-concentration malodor and a method for producing the same.

[Structure of the Invention] Means for Solving the Problems A low-concentration malodorous gas phase deodorant comprising a humic substance of the present invention is an active humic substance powder, silver salts such as silver nitrate as a catalyst, and an active humic substance. Activated carbon, which blocks the contact between the silver salt and silver salt, and retains the malodor, and nitric acid that acidifies the surface of the activated carbon.
And a nonionic surfactant that disperses the neutral malodor, characterized by being formed into a solid material in the form of pellets, granules, honeycombs, or the like, and the method for producing the same.
Active humic powder is mixed with a mixture of activated carbon, water, silver salts such as silver nitrate, nitric acid and a nonionic surfactant in advance, and then molded into a solid such as pellet, granule or honeycomb. It is characterized by being formed.

Example One example of the present invention will be described below.

The present invention is the active humic substance that is the main component, activated carbon, salts such as silver nitrate, nitric acid and a nonionic surfactant are mixed, and then dried as a solid molded product. It has the characteristics of.

(B) Constituent materials: Unlike ordinary humus, active humic powder has a high free fulvic acid content of 5% or more, humic acid content of 3% or more, and other clay minerals, lignin, etc. Natural products containing 5% or more,
It is artificial or a mixture thereof, and the pH of the water extract mainly composed of fulvic acid is 4.0 or less, and its oxidation potential is on the positive side of +200 mV.

When this is molded into a solid material such as pellets, pressure is applied to exude the retained water. If you dissolve soluble lignin, high molecular humic substances, clay minerals, etc. held in it,
During drying, they combine into a porous structure.

If fulvic acid having a low solubility that remains in the structure is exuded to the porous surface during deodorization, the contact area with a bad odor increases and the oxidation efficiency increases.

Further, the relative humidity is suppressed to 90% or less, the dissolution of fulvic acid is suppressed, and the durability of the oxidizing power is improved.

Silver salts such as silver nitrate are a catalyst for supplying oxygen to fulvic acid, and are reduced in a solid molded product and present in the form of metallic silver or silver oxide. Silver nitrate is fulvic acid or a part of nitration of a structure. It is consumed by and helps the oxidation of neutral malodors and acidic malodors such as hydrogen sulfide. This action leads to prevention of deterioration of the metallic silver catalytic power due to neutral malodor and hydrogen sulfide.

Activated carbon is used to adsorb a low concentration malodor and concentrate it to provide fulvic acid. Fulvic acid facilitates the operation of the redox system of quinone hydroquinone by the phenol group exposed on the surface thereof, and enhances the oxidative deodorization efficiency by the hydrogen peroxide generated during that time.

As the concentrated malodor is oxidized, its adsorption power is regenerated and its adsorption efficiency is improved.

Nitric acid supplements the above-mentioned insufficient amount of silver nitrate, improves the oxidizing power by nitration, prevents poisoning of the catalyst, keeps the surface of the structure and activated carbon acidic, and increases the amount of basic malodor adsorbed. Also helps.

The nonionic surfactant disperses a lipophilic malodor, such as dimethyl sulfide, which is a neutral malodor, in the structure and makes it contact with the hydrophilic fulvic acid to accelerate its oxidation.

(B) Manufacturing method: To facilitate the mixing of activated humic powder and activated carbon, and to block the contact between activated humus and silver salts such as silver nitrate during solid molding, activated carbon is treated with water and a nonionic surface active agent. A mixture of agents, silver salts such as silver nitrate, and nitric acid is added to the mixture, and the mixture is stirred and mixed.The resulting mixture is added to the active humic substance powder and kneaded. To enhance rigidity.

Experimental Example For active humus powder 100, a mixture of activated carbon 50, water 60, silver nitrate 4.5, nitric acid 9 and polyoxyethylene monooleate 0.2 was prepared in advance, and after kneading with this mixture, pelletized and dried. The deodorant was used.

To this pellet, 100 pp of ammonia was added as a basic malodor.
An aeration deodorization test was carried out at a flow rate of 18.5 Nm ³ / min for each of m, acidic odor of 100 ppm of hydrogen sulfide, and neutral odor of 2 ppm of dimethyl sulfide.

As a result, as compared with the maximum value of the deodorizing rate per weight of the commercially available deodorant, a value of 6 times or more was obtained for any malodor.
It showed a high rate of over%.

[Effects of the Invention] The present invention is a deodorant that comprehensively deodorizes basic, acidic and neutral malodors originating from natural organic substances, their physiological actions and decomposition products, and shows a deodorizing efficiency higher than a certain level. Is.

Therefore, of course, it can be applied to all uses of the current deodorant, and because of its long durability, it started deodorizing the odor in the refrigerator for a long time of 6 years or more, which was previously impossible.
The effect can be exerted in a field where the deodorant matches the product life or in an undeveloped field where it is difficult to replace the deodorant for several years or more.

Claims (2)

[Claims] 1. An active humic substance powder, a silver salt such as silver nitrate as a catalyst, activated carbon that blocks contact between the active humic substance and silver salts, and retains a malodor, and nitric acid that acidifies the surface of the activated carbon. And a nonionic surfactant that disperses a neutral malodor, formed into a solid material such as pellets, granules, or honeycombs, which is a low-concentration malodorous gas phase deodorant consisting of humus. Agent. 2. A solid such as pellets, granules or honeycombs after mixing a mixture of activated humic powder with activated carbon with water, silver salts such as silver nitrate, nitric acid and a nonionic surfactant in advance. A process for producing a low-concentration malodorous gas phase deodorant consisting of humus, characterized by being formed into a molded article.