Method of biogel obtaining and biogel

FIELD: chemistry.

SUBSTANCE: peat in a mixture with water is loaded into a dispersion chamber, then the dispersion chamber is pressurised, static pressure of 5-7 atm is supplied into it and the content of the chamber is processed by ultrasonic vibrations with a density of insonification not less than 50 W/cm2, providing the sound pressure on the mixture of peat with water for the preliminarily specified time, which exceeds the static pressure by 2-3 times. The invention also relates to biogel, obtained by the claimed method.

EFFECT: obtaining water-peat biogel with nanosized particles, in which useful substances do not lose their efficiency.

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The technical field to which the invention relates.

This invention relates to techniques for the production of Biogel based on peat, which Biogel has the widest application.

The level of technology

Currently, there are various ways of getting Biogel, including peat. All of these methods include grinding particles of peat.

Thus, in the patent of Russian Federation №2188628 (publ. 10.09.2002) disclosed a cosmetic agent based on an aqueous extract of mixed peat and in the patent of Russian Federation №2256438 (publ. 20.07.2005) mud paste additionally rubbed through a sieve. When such mechanical grinding out particles of the order of tens or even hundreds of micrometers.

In the patents of the Russian Federation No. 2228921 (publ. 20.06.2004) and 2475038 (publ. 20.02.2013) describes how to get the Biogel of peat, in which the feedstock before chopping treated with an alkaline solution. However, chemical treatment destroys the humic substances contained in the original peat.

In the application for patent of the RF No. 2006137086 (publ. 27.04.2008) describes the way in which hydration of biopolymers using cavitation and gel-like product of the hydrated biomass. This method has very limited use, since cavitation is subjected to an aqueous solution of salts.

In the patent of Russian Federation №2279323 (publ. 10.07.2006) grinding is carried out using ultrasonic cavitation, and in patents is F. No. 2304460 (publ. 20.08.2007), 2331478 (publ. 20.08.2008) and 2446852 (publ. 10.04.2010) ultrasonic cavitation occurs in the presence of static pressure in the reactor chamber.

A common disadvantage of all known methods of obtaining the Biogel is that we get Biogel has a particle size of about microns, resulting in the use of such tests is very limited, because the smaller the particle size of Biogel, the higher its effectiveness as a drug and (or) cosmetics.

Disclosure of inventions

The objective of the invention is the extension of the existing Arsenal of technical tools for the development of such a method of obtaining a Biogel, with which it is possible to get Biogel with nanosized particles. This allows a much wider use of such tests.

To solve the problem and achieve the technical result in the first object of the present invention, a method for obtaining Biogel representing podocarpaceae gel with a particle size of dispersed peat no more than 40-60 nm, namely, that: download the peat humidity of 60-80% in a mixture with water at a ratio of peat to water in the range from 1:1.5 to 1:3,5; seal dispergation camera; served in sealed dispergation chamber static pressure 5-7 bar handle content dispensational camera ultrasonic vibrations with a density of scoring at least 50 W/cm 2providing within a predetermined time, the sound pressure at the above-mentioned mixture of peat with water in excess of the static pressure in 2-3 times.

The feature of the method according to the present invention is that the frequency of the ultrasonic vibrations can be adjusted in the range of 15-30 kHz with simultaneous adjustment of the static pressure for reliable dispersion of particles of peat up to the specified dimensions.

When this adjustment of the frequency of ultrasonic vibrations may exercise mode: the initial impact in the range of 15-20 kHz for 4-6 minutes and the final impact in the range of 20-30 kHz for 4-6 minutes.

The second object of the present invention proposed a Biogel representing podocarpaceae gel with a particle size of dispersed peat 40-60 nm, obtained by the method according to the first object of the present invention.

Detailed description of the invention

Before describing the proposed method, it is necessary to go into detail on how the source material, which in this way is used to get Biogel.

Peat is a capillary substance that is difficult to disperse. Mechanical shredding peat minimum achievable particle size is about 100 microns. Attempts mechanical crushing of peat into smaller particles, nab is emer, by vibrating or gas-jet device lead to the spreading of peat on the surface of such mechanical devices.

Generally, peat has some humidity. For use in the method according to the present invention the moisture content of the peat may be in the range of from 60 to 80%, although it is allowable deflection in any direction.

The method according to the present invention is implemented in devices, representing a resealable dispergation chamber into which is loaded the source material (peat desired humidity) in a mixture with a given volume of water, and then pump creates a static pressure of a specified value. After that, the contents of the sealed dispensational camera is exposed to ultrasound, the source of which may be as known in the art magnetostrictive transducer, located, for example, under the bottom of the camera, and magnetoacoustic generator, in which the cylindrical wall of the chamber vibrates under the action of induced eddy currents in it (see RF patent №2490317). Any of these treatments causes the formation in tortolani mixture of cavitation bubbles and their subsequent collapse. It is known (see the Ultrasound. A small encyclopedia. The chapters. Ed. I. P. Halamine. - M.: Soviet encyclopedia, 1979. - 400 C.)that collapsing of cavitation the second bubble is capable of dispersing solid particles, are larger than its own maximum size. Thus, by appropriate selection of parameters in the method according to the present invention is provided shredding peat particles to values of the order of tens of nanometers.

The method according to the present invention is as follows. Peat desired humidity is mixed with water in a ratio of from 1:1.5 to 1:3,5. The resulting cortodera mixture is loaded into dispergation chamber, which is sealed after loading, and then it is pumped static pressure of about 5-7 atmospheres. Next, a generator connected to an ultrasonic transducer that outputs an ultrasonic signal with a frequency of about 15-20 kHz and with an amplitude of providing a sound pressure in tortolani mixture, about twice or three times higher than the static pressure in dispensational the camera. This ultrasonic treatment podocarpaceae mixture is within about 4-6 minutes.

Because in the process of cavitation occurring in dispensational the camera, the size of the peat particles decrease, respectively, should be reduced and the size of the resulting cavitation bubbles. The maximum size of the bubble depends on the time of its growth, and hence on the frequency of the sound. Therefore, for fine dispersion of particles of peat in the following 6 minute processing can be performed at a higher frequency (20-30 kHz). In principle, the frequency ultrasound can be smoothly increased during the whole process the downloaded portions tortolani mixture, then the final size of the particles of peat will be about 40-60 nm.

You only need to bear in mind that reducing the time of growth of the cavitation bubble lowers the kinetic energy resulting from its collapse fluid flows, destroying peat particles. Therefore, to maintain the momentum dispersion of the static pressure in dispensational the camera should be increased to 7 to 10 atmospheres with increasing frequency ultrasonic vibrations.

In the case that the ultrasonic treatment is carried out using the magnetoacoustic devices, in which ultrasonic vibrations are excited by vibration of the thin wall dispensational camera, the area of the radiating surface becomes much more than using a magnetostrictive transducer. Therefore, significantly increases the efficiency of the process and reduce the time dispersion of a unit mass of water-saturated peat.

In the specified processing in dispensational chamber is formed Biogel whose properties are determined by the content of humic acids and fulvic acids, i.e., water-soluble humic acids. This high-molecular organic substances, the molecular size of which ranges from 3 to 45 nm. Since in the method according to the present invention peat particles are sieved to 40-60 nm in the absence of chemical and thermal processing, humic and fulvic acids virtually destroyed and fully exert their activity in received Biogel.

The tests can be used not only as a medicinal or cosmetic products, but also in crop production as a growth promoter, plant, pre-treatment of seeds to stimulate their germination, as well as the protection of seeds against fungi, mold and pathogenic bacteria and disinfecting grain cereals after long-term storage. The Appendix contains the report of FSBEI HPE "Kursk state University" 27.02.2013, confirming the efficiency of Biogel of the present invention.

Thus, the present invention can be obtained from tortolani mixture Biogel in which nutrients do not lose their effectiveness because the method according to the present invention provides a receiving dispersed particles of peat with sizes of the order of 40-60 nm and does not use any chemical or thermal processing.

1. A method of obtaining a Biogel representing podocarpaceae gel with a particle size of dispersed peat no more than 40-60 nm, namely, that:
- download in dispergation the th camera peat humidity of 60-80% in a mixture with water at a ratio of peat to water in the range from 1:1.5 to 1:3,5;
- seal mentioned dispergation camera;
- served in a sealed dispergation chamber static pressure 5-7 bar;
- process the contents mentioned dispensational camera ultrasonic vibrations with a density of scoring at least 50 W/cm2providing within a predetermined time, the sound pressure at the above-mentioned mixture of peat with water exceeding mentioned static pressure 2-3 times.

2. The method according to p. 1, which regulate the frequency mentioned ultrasonic vibrations in the range of 15-30 kHz with simultaneous adjustment of the static pressure for reliable dispersion of the particles mentioned peat to the above-mentioned dimensions.

3. The method according to p. 2, in which said adjustment of the frequency of ultrasonic vibrations is carried out in the mode: the initial impact in the range of 15-20 kHz for 4-6 minutes and the final impact in the range of 20-30 kHz for 4-6 minutes.

4. Biogel representing podocarpaceae gel with a particle size of dispersed peat no more than 40-60 nm, obtained by the method according to any of paragraphs.1-3.



 

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