RU2462421C2 - Method of controlling solvent properties of water - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to biology, chemistry, medicine, pharmacology, food industry, agriculture and can be used to control concentration of aqueous solutions of organic and inorganic substances. The method involves exposing water or an aqueous solution to an alternating magnetic field with magnetic flux density of 25 mT for less than 1 hour at constant temperature. To increase the solvent power, the water is exposed to an alternating magnetic field with frequency in the range of 10-30 Hz and 1-9 Hz for the aqueous solution, and to reduce the solvent power, the water is exposed to an alternating magnetic field with frequency in the range of 1-9 Hz, and 10-30 Hz for the aqueous solution.

EFFECT: increasing/decreasing solvent power of water by varying frequency parameters of the alternating magnetic field to which the water is exposed.

4 cl, 3 dwg

Description

The invention relates to the field of biology, chemistry, medicine, pharmacology, food industry, agriculture, can be used to control the concentration of aqueous solutions of organic and inorganic substances.

A known dependence of the solvent properties of water on exposure to an alternating magnetic field is used in the METHOD FOR DETERMINING THE EFFECTIVENESS OF MAGNETIC WATER TREATMENT (see patent RU 1555297, IPC C02F 1/48). In the known method, the test samples of water are poured into flasks, into which are then added, with continuous stirring, a soluble polar substance (liquid or finely divided solid such as sodium chloride, etc.) until its further solubility ceases, after which the density of a saturated solution of this substance is measured in source water ρ ₁ and treated ρ ₂ . The magnitude of the ratio ρ ₂ / ρ ₁ = n judge the effectiveness of the magnetic treatment of water. The optimal magnetic treatment conditions correspond to the maximum value of n, with a density of the solute less than the density of water. In this case, the density ratios of saturated solutions of readily soluble substances in water treated under various modes of magnetic activation are compared with the density of a saturated solution of the same substances in unmagnetized water.

The METHOD FOR MAGNETIC PROCESSING LIQUID (see patent RU 2401809, IPC C02F 1/48), including inducing a liquid in an electromagnetic device containing a solenoid, powered by alternating current from a low-frequency generator and creating a low-frequency magnetic field with a magnitude of magnetic induction of 5 · 10 ^-6 T . A container of liquid is placed in the solenoid and held for at least three hours to obtain a magnetized liquid.

Known METHOD AND ELECTRIC DEVICE FOR PURIFICATION OF WATER (see patent US 5603843, IPC C02F 1/48), revealing the process of exposure to an electric solution in an aqueous solution to relieve supersaturation, which causes precipitation of poorly soluble impurities present in water.

Closest to the claimed solution is a METHOD FOR MAGNETIC TREATMENT OF LIQUIDS to reduce the concentration of salts dissolved in them, including passing liquid through a magnetotron (RU 2118614, IPC С02F 1/48). According to the solution, 100% of the required amount of liquid is passed through a magnetotron, and 20-30% of the entire liquid with induction of 20-80 mT, excited by alternating current at a frequency of 25-100 Hz, is subjected to magnetic treatment in a time-varying magnetic field gradient in space. the mixing process with the untreated fluid stream occurs simultaneously.

The disadvantage of these methods is the impossibility of strict regulation of the solvent properties of water, not only in the direction of their reduction, but also in the direction of increase.

The technical result of the claimed invention is to increase / decrease the dissolving ability of water by changing the frequency parameters of the variable magnetic field acting on it.

The claimed technical result is achieved by the fact that the method of regulating the dissolving properties of water or an aqueous solution involves the action of an alternating magnetic field on water or an aqueous solution, according to the solution, the field frequency is selected from the range of 1-30 Hz. To increase the dissolving power, they are exposed to water by an alternating magnetic field with a frequency from the range of 10-30 Hz, and from 1 to 9 Hz on an aqueous solution. To reduce the dissolving power, they are exposed to water by an alternating magnetic field with a frequency from the range of 1-9 Hz, and 10-30 Hz on the aqueous solution. They effect water or an aqueous solution with an alternating magnetic field of 25 mTl for at least 1 hour at a constant temperature.

The invention is illustrated by drawings, where Fig. 1 shows a diagram of an apparatus for producing an alternating magnetic field (PMF). Figure 2 shows the dependence of the dissolving ability of water on the time of exposure to PMF with a frequency of 25 Hz with induction of 25 mT for the case when the test substance (CuSO ₄ ) was dissolved in water after its exposure to PMP. Figure 3 shows the dependence of the dissolving ability of water on the frequency of the PMF of low intensity (25 mT) for the case when the test substance (CuSO ₄ ) was dissolved in water after its exposure to PMP for one hour. Figure 4 shows the dependence of the dissolving ability of water on the frequency of low-intensity PMF for the case when the test substance (CuSO ₄ ) was dissolved in water immediately before exposure to PMP. Figure 5 presents the dependence of the dissolving ability of water on time after turning off the PMF with a frequency of 25 Hz for the case when the test substance (CuSO ₄ ) was dissolved in water after its hourly irradiation of the PMP. Figure 6 presents the dependence of the dissolving ability of water on time after turning off the PMF with a frequency of 25 Hz for the case when the test substance (CuSO ₄ ) was dissolved in water immediately before exposure to the PMP.

The positions in the drawings indicate:

B is the magnetic field induction vector,

1 - magnet;

2 - disk;

3 - holder.

The source of an alternating magnetic field (PMF) is a rotating disk with a diameter of 25 cm, on which are mounted radially alternating in polarity, permanent magnets with a magnetization axis perpendicular to the plane of the disk (figure 1). A disk placed directly under a cuvette with an experimental sample of water, when rotated with an electric motor in a horizontal plane at a fixed speed, ensures the presence of an alternating magnetic field of a given frequency at any point in the working chamber. The amplitude of the magnetic field induction inside the chamber near its bottom is 25 mT. It is experimentally shown that to change the dissolving ability of water, an hourly exposure to PMF with an induction amplitude of 25 mT is sufficient, regardless of the method of preparation of the solutions (Fig. 2). Similar dependences are valid for the entire range of studied frequencies of the PMF 1-30 Hz.

To increase the dissolving power of pure water, they are treated with an alternating magnetic field with a frequency from the range of 10-30 Hz. To reduce the solubility of pure water, they are treated with an alternating magnetic field with a frequency from the range of 1-9 Hz. After exposure to clean water with an alternating magnetic field, the necessary substances are dissolved in the treated water.

To reduce the concentration of substances dissolved in water, the finished solution is treated with an alternating magnetic field with a frequency from the range of 10-30 Hz. To increase the content of poorly soluble substances in water, the previously prepared suspension is treated with an alternating magnetic field with a frequency from the range of 1-9 Hz.

The effect of the alternating magnetic field on both the water-solvent and the finished aqueous solution of various substances is lost over time - its characteristics return to their original state (Fig.5-6).

Examples of specific performance.

Example 1. For experimental confirmation of the proposed method, the studied water sample (for example, 10 ml) was divided into two groups: control and experimental. The experimental sample was magnetized by an alternating magnetic field (25 mT) for 1 hour. Then supersaturated solutions of readily soluble salts (CuSO ₄ , FeSO ₄ ) were prepared in the experimental and control samples at a constant temperature. In a comparative analysis with other inorganic salts, the results showed the identity of the experimental data in the entire investigated frequency range of magnetic fields of 1-30 Hz. Using a Shimadzu spectrophotometer, transmittance T was measured in transmission mode. The difference in testimony between the control and experimental solutions (ΔT = T _counter- T _experience ) depending on the frequency of the PMF is presented in figure 3. As can be seen from the graph in figure 3, in the frequency range 1-9 Hz, there is a decrease in the solubility of salt, while at frequencies of 10-30 Hz there is an increase in its solubility.

Example 2. The effect of the PMF frequency on the concentration of saturated salt solutions was also experimentally investigated. For this, a saturated solution of a well-soluble salt, for example CuSO ₄ , with a volume of 10 ml was prepared and was divided into two groups: control and experimental. The experimental sample was magnetized for 1 hour by an alternating magnetic field with an induction of 25 mT. Using a Shimadzu spectrophotometer, transmission measurements were made. The difference between the control and experimental solutions (ΔT = T _counter- T _experience ) depending on the frequency of PMP is presented in figure 4. Moreover, in the frequency range 1–9 Hz, an increase in its solubility is observed, whereas after 10 Hz the solubility monotonously decreases with increasing frequency and, having reached the saturation moment (22–25 Hz), remains unchanged.

Claims (4)

1. The method of regulating the solvent properties of water or an aqueous solution, including exposure to an alternating magnetic field on water or an aqueous solution, characterized in that the frequency of the field is selected from the range of 1-30 Hz. 2. The method according to claim 1, characterized in that in order to increase the dissolving ability they act on water with an alternating magnetic field with a frequency from the range of 10-30 Hz, and on the aqueous solution - 1-9 Hz. 3. The method according to claim 1, characterized in that in order to reduce the dissolving ability they act on water with an alternating magnetic field with a frequency from the range of 1-9 Hz, and on an aqueous solution of 10-30 Hz. 4. The method according to any one of claims 1 to 3, characterized in that they effect water or an aqueous solution with an alternating magnetic field of 25 mT for at least 1 hour at a constant temperature.

Images