KR20210026580A - Composition for preparing dust settling bubble containing water-soluble polymer cellulose and surfactant - Google Patents

Abstract

The present invention relates to a composition capable of creating bubbles having large diameter and long holding time by including a surfactant and a cellulose polymer. When using the bubbles, it is possible to effectively remove fine or ultrafine dust present in the atmosphere.

Description

A composition for producing a bubble for sedimentation of dust containing a water-soluble polymer cellulose and a surfactant {COMPOSITION FOR PREPARING DUST SETTLING BUBBLE CONTAINING WATER-SOLUBLE POLYMER CELLULOSE AND SURFACTANT}

The present invention relates to a composition for producing a bubble for removing fine or ultrafine dust, and to a bubble for sedimentation of dust produced therefrom.

As the dependence on fossil fuels increases due to industrialization, the emission of primary pollutants such as sulfurous acid gas and nitrogen oxides increases, and the atmosphere of fine airborne dust such as aerosols generated by photochemical reactions in the atmosphere of the primary pollutants. The concentration is increasing, and this is having a serious adverse effect on human life and ecosystem, and countermeasures are urgently needed. It is believed that high concentrations of fine dust (dust) are generated as primary pollutants in the atmosphere are converted to nitrates, which are secondary pollutants.

Fine dust is formed as a heterogeneous reaction, which is not a reaction between substances having the same phase, such as "reaction between gaseous substances", but rather with different phases such as gaseous substances, liquid substances, and solid substances. It means that fine dust and gaseous substances are combined as a reaction between substances, and various components such as organic and inorganic ionic substances and metal substances including heavy metals are present in the fine dust in the atmosphere formed by such a heterogeneous reaction. do.

Among the ions contained in the fine dust, NO ^3- and SO ₄ ^2- were the main components in the case of anions, ^{and NH 4+} and metal ions were the main components in the case of cations. Looking at the variation, both PM10 (dust with a particle diameter of 10 μm or less) and PM2.5 (dust with a particle diameter of 2.5 μm or less) appeared in the same order as ^{SO4 2-} >NO ^3- >Cl ^- > Ca ^2+. The difference in the fluctuation range means fluctuations due to external influences, which means that they are greatly influenced by external sources.

In addition to ionic components, various metal components exist in fine dust, and among them, many heavy metals that are harmful to the human body are included. Looking at the fraction of metal components excluding the sulfur (S) component, PM10 occupied a high proportion in the order of Fe, Ca, Al, K, Na, Mg, and Zn, and PM2.5 had a high proportion of the same elements in a similar order. Occupied. In other words, it can be seen that nitrate and sulfate are bonded to the fine dust in the form of ammonium, and various metallic substances are bonded thereto in a solid state.

On the other hand, fine and ultrafine dust containing ionic components and metal components are small in size and small in mass, so they float in the atmosphere for a long time or move by wind or vertical ascending air currents. In order to effectively sediment and remove such suspended particles at a high speed, rather than simply sprinkling water or spraying a dust removal solution, bubbles can be made to aggregate and settle the dust. In order to remove dust effectively, there is a need to produce bubbles that can adsorb dust well and have a long duration.

Korean Patent Publication 10-2014-0012205

An object of the present invention is to provide a composition for producing a dust sedimentation bubble.

Another object of the present invention is to provide a dust sedimentation bubble.

Another object of the present invention is to provide a method for removing dust.

1. A composition for producing a bubble for sedimentation of dust containing a water-soluble polymer cellulose and a surfactant.

2. In the above 1, the water-soluble polymer cellulose is carboxymethyl cellulose (CMC), methyl cellulose (MC), hydroxypropylmethyl cellulose (HPMC), hydroxypropyl cellulose (HPC), or hydroxyethyl cellulose (HEC). At least one composition for producing a bubble for sedimentation of dust.

3. In the above 1, wherein the surfactant is at least one of coco betaine or sodium cocoyl apple amino acid, a composition for producing a bubble for sedimentation of dust.

4. The composition for preparing a bubble for sedimentation of dust according to the above 1, further comprising glycerin or polyethylene glycol.

5. The composition for preparing a bubble for sedimentation of dust according to the above 1, further comprising starch syrup.

6. The composition for producing a bubble for sedimentation of dust according to the above 1, further comprising a chelating agent.

7. In the above 6, wherein the chelating agent is alanine, polyphosphate sodium, metaphosphate sodium, phosphoric acid, tartaric acid or ethylenediamine tetraacetic acid (EDTA) at least one of the composition for producing a bubble for sedimentation of dust.

8. The composition for preparing a bubble for sedimentation of dust according to the above 1, comprising 0.01 to 10 parts by weight of the water-soluble polymer cellulose and 5 to 50 parts by weight of the surfactant.

9. The composition for preparing a bubble for sedimentation of dust according to the above 4, comprising 0.01 to 10 parts by weight of a water-soluble polymer cellulose, 5 to 50 parts by weight of a surfactant, and 5 to 15 parts by weight of polyethylene glycol.

10. In the above 5, 0.01 to 10 parts by weight of water-soluble polymer cellulose, 5 to 50 parts by weight of surfactant, and 5 to 15 parts by weight of starch syrup, a composition for producing a bubble for sedimentation of dust.

11. The composition for preparing a bubble for sedimentation of dust according to the above 1, wherein the dust has a diameter of 0.1 to 100 μm.

12. Dust sedimentation bubble prepared with the composition of any one of the above 1 to 11.

13. A method of removing dust by spraying the bubbles of 12 above in the atmosphere or in a confined space.

The composition of the present invention contains a component capable of adsorbing dust, and a bubble can be formed smoothly by the composition and has an effect of increasing the air time of the produced bubble. It can effectively remove fine or ultrafine dust existing in the atmosphere.

1 is a schematic diagram of the shape of a bubble made of a composition according to an embodiment.
2 is a schematic diagram of a process in which dust is adsorbed and settled in a bubble made of a composition according to an embodiment.

The present invention provides a composition for producing a bubble for sedimentation of dust comprising a water-soluble polymer cellulose and a surfactant.

The water-soluble polymer cellulose may be obtained from nature, may be manufactured and sold industrially, but is not limited thereto.

The water-soluble polymer cellulose may be carboxymethyl cellulose (CMC), methyl cellulose (MC), hydroxypropylmethyl cellulose (HPMC), hydroxypropyl cellulose (HPC), or hydroxyethyl cellulose (HEC), but is not limited thereto.

The surfactant may be cationic, anionic, or nonionic, but is not limited thereto. The type of surfactant can be adjusted according to the characteristics of the pollutant to be removed.

The surfactant may be a natural surfactant derived from nature, or may be a synthetic surfactant synthesized artificially.

For example, the surfactant is soap, monoalkyl sulfate, alkylpolyoxyethylene sulfate, alkelbenzenesulfonate, monoalkylphosphate, dialkyldimethylammonium salt, alkylbenzylmethylammonium salt, alkylsulfobetaine, alkylcarboxibetaine, polyoxy Ethylene alkyl ether, fatty acid sorbitan ester, fatty acid diethanolamine, or alkyl monoglyceryl ether may be, but is not limited thereto.

For another example, the surfactant may be coco betaine, apple wash (sodium cocoyl appleamino acid), olive oil base, laural glycoside, or coco glucoside, but is not limited thereto.

The composition for preparing a bubble of the present invention may contain 5 to 50 parts by weight of a surfactant based on 100 parts by weight of the total composition.

The composition for preparing a bubble of the present invention may include 0.01 to 10 parts by weight of a water-soluble polymer cellulose and 5 to 50 parts by weight of a surfactant.

The water-soluble polymer cellulose may be included in an amount of 0.01 to 10 parts by weight, 0.05 to 9 parts by weight, 0.1 to 8 parts by weight, 1 to 7 parts by weight, 2 to 6 parts by weight, 3 to 5 parts by weight, but is not limited thereto. The water-soluble polymer cellulose may be included in an amount of 0.1 to 3 parts by weight, 0.5 to 2.5 parts by weight, and 1 to 2 parts by weight, but is not limited thereto.

The surfactant may be included in 5 to 50 parts by weight, 10 to 45 parts by weight, 15 to 40 parts by weight, 20 to 35 parts by weight, or 25 to 30 parts by weight, but is not limited thereto. The surfactant may be included in an amount of 10 to 50 parts by weight, 20 to 40 parts by weight, or 25 to 35 parts by weight, but is not limited thereto.

The composition for preparing a bubble of the present invention may further include at least one of a naturally degradable water-soluble polymer, alginate, disaccharide, or polysaccharide, but is not limited thereto.

The naturally degradable water-soluble polymer may be polyethylene glycol (PEG), polyvinyl alcohol (PVA), or glycerin, but is not limited thereto. The alginate may be extracted from seaweed, but is not limited thereto. The disaccharide or polysaccharide may be starch syrup, but is not limited thereto.

When the composition for producing a bubble of the present invention contains 0.01 to 10 parts by weight of a water-soluble polymer cellulose and 5 to 50 parts by weight of a surfactant, the naturally degradable water-soluble polymer may be included, for example, 5 to 15 parts by weight.

The naturally degradable water-soluble polymer may be included in 5 to 15 parts by weight, 6 to 14 parts by weight, 7 to 13 parts by weight, 8 to 12 parts by weight, or 9 to 11 parts by weight, but is not limited thereto.

When the composition for producing a bubble of the present invention contains 0.01 to 10 parts by weight of a water-soluble polymer cellulose and 5 to 50 parts by weight of a surfactant, the polysaccharide or disaccharide may be included, for example, 5 to 15 parts by weight.

The polysaccharide or disaccharide may be included in 5 to 15 parts by weight, 6 to 14 parts by weight, 7 to 13 parts by weight, 8 to 12 parts by weight, or 9 to 11 parts by weight, but is not limited thereto.

When the composition for producing a bubble of the present invention contains 0.01 to 10 parts by weight of a water-soluble polymer cellulose and 5 to 50 parts by weight of a surfactant, the biodegradable water-soluble polymer is, for example, 5 to 15 parts by weight, and 5 to 15 parts by weight of a polysaccharide or disaccharide. Can be included.

For example, the composition for preparing a bubble of the present invention comprises 0.01 to 10 parts by weight of a water-soluble polymer cellulose, 5 to 50 parts by weight of a surfactant, 5 to 15 parts by weight of a naturally degradable water-soluble polymer, and 15 parts by weight of a polysaccharide or disaccharide based on 100 parts by weight of the total composition. can do. Preferably, the composition for preparing a bubble of the present invention comprises 0.1 to 2.5 parts by weight of a water-soluble polymer cellulose, 15 to 50 parts by weight of a surfactant, 5 to 15 parts by weight of a naturally degradable water-soluble polymer, and 15 parts by weight of a polysaccharide or disaccharide based on 100 parts by weight of the total composition. can do.

Furthermore, the composition for preparing a bubble of the present invention may further include a chelating agent, and any material having a multidentate ligand that forms a chelate compound by binding with a metal ion may be included without limitation.

For example, the chelating agent is alanine, sodium polyphosphate, sodium metaphosphate, phosphoric acid, tartaric acid, ethylenediamine tetraacetic acid (EDTA), oxalate ion, citric acid, CyDTA (1,2-cyclo-hexadiamine tetraacetic acid) or nitrile. It may be triacetate (nitrilotriacetic acid; NTA), but is not limited thereto. The chelating agent can stabilize heavy metals by forming a complex with heavy metals present in the dust.

For example, EDTA may be EDTA-1Na, EDTA-2Na, EDTA-3Na, EDTA-4Na, EDTA-Ca2Na, or EDTA-FeNa, but is not limited thereto.

When the composition for producing a bubble of the present invention contains 0.01 to 10 parts by weight of a water-soluble polymer cellulose and 5 to 50 parts by weight of a surfactant, the chelating agent may be further included, for example, 0.01 to 30 parts by weight, but is not limited thereto. The amount of the chelating agent can be adjusted according to the type or amount of heavy metals contained in the dust.

In addition, the composition for preparing a bubble of the present invention may further include water, purified water, methanol, ethanol, propanol, isopropanol, acetone, DMSO, DMF, or acetonitrile, and preferably may further include water, but is not limited thereto. Does not. These ingredients may be included to control the total amount or volume of the composition of the present invention. For example, the water may be included to adjust the total amount of the composition of the present invention to 100% by weight.

When a bubble is produced with the composition of the present invention, the bubble formation efficiency can be increased. In addition, when a bubble is prepared with the composition of the present invention, a bubble having a shape and size suitable for sedimentation of dust may be prepared. Furthermore, when a bubble is prepared with the composition of the present invention, the duration of the bubble may be increased.

In addition, the present invention provides a dust sedimentation bubble made of the above-described composition.

The bubble may be manufactured using a double nozzle or a bubble maker, but is not limited thereto.

Bubbles prepared from the composition of the present invention may be prepared in a form suitable for sedimentation of dust.

The bubble of the present invention may have a spherical shape, and this may be due to the fact that a component having a property of reducing surface tension is included in the composition for producing a bubble. For example, the spherical shape of the bubble may be due to the amount of surfactant included in the composition, but is not limited thereto.

Bubbles made from the composition of the present invention can be made into a size suitable for sedimentation of dust.

The bubble may have a diameter of 1mm to 30cm, but is not limited thereto. For example, the bubble may have a diameter of 1mm to 30cm, 1cm to 20cm, 2cm to 15cm, 2.5cm to 10cm, 3 to 5cm, but is not limited thereto.

Bubbles prepared with the composition of the present invention may have a long duration, which may be due to the fact that the composition for producing bubbles contains a component that prevents evaporation of moisture. For example, the longer duration of the bubble is the type or amount of surfactant contained in the composition, the type or amount of water-soluble polymer cellulose, the type or amount of biodegradable polymer, the type or amount of polysaccharide or disaccharide, and the type of chelate. Or, it may be due to at least one of the amounts, but is not limited thereto.

The duration of the bubble is in the air from 100 to 2000, 120 to 1900, 140 to 1800, 160 to 1700, 180 to 1600, 200 to 1500, 220 to 1400, 240 to 1300, 260 to 1200, 280 to 1100, 300 to It may be 1000, 320 to 900, 340 to 800, 360 to 700, 380 to 600, or 400 to 500 seconds, but is not limited thereto.

The duration of the bubble is 200 to 300, 300 to 400, 400 to 500, 500 to 600, 600 to 700, 700 to 800, 800 to 900, 900 to 1000, 1000 to 1100, 1100 to 1200, 1200 to It may be 1300, 1300 to 1400, 1400 to 1500, 1500 to 1600, 1600 to 1700, 1700 to 1800, 1800 to 1900, 1900 to 2000 seconds, but is not limited thereto.

The bubbles of the present invention can adsorb dust present in the atmosphere.

The present invention bubble may adsorb at least one of ultrafine dust or fine dust, but is not limited thereto. For a specific example, the bubble of the present invention may adsorb PM10 (dust having a particle diameter of 10 μm or less; fine dust) or PM 2.5 (dust having a particle diameter of 2.5 μm or less; ultrafine dust), but is not limited thereto.

The particle diameter of the dust may be 0.01 to 100 μm, but is not limited thereto. For example, the particle diameter of the dust that can be adsorbed by the bubbles of the present invention is 0.01 to 100, 0.1 to 90, 1 to 80, 1.5 to 70, 2 to 60, 2.5 to 50, 3 to 40, 3.5 to 30, 4 to It may be 20, 4.5 to 10 μm, but is not limited thereto.

Dust may be adsorbed and/or agglomerated through physical and/or chemical collisions with the present invention bubbles and components contained in the dust.

The bubbles of the present invention may be combined with at least one or more of inorganic ions, organic ions, or metal components contained in the dust, and through this, the dust may be adsorbed and/or agglomerated. When dust is adsorbed and/or agglomerated in the bubble, the mass increases and the dust may settle by gravity, which may reduce or remove the dust in the atmosphere.

Furthermore, the present invention provides a method of removing dust by spraying a dust sedimentation bubble made of the above-described composition.

As a method of spraying bubbles, a bubble spreader, an aircraft or a drone vehicle may be used, but is not limited thereto.

When spraying bubbles using an aircraft or drone vehicle, it is possible to spray bubbles at a specific altitude by analyzing the wind direction and dust distribution in a space to remove dust fluidly. For example, the present invention bubble may be sprayed at an altitude of 100 to 1000 m using an aircraft or drone vehicle, but is not limited thereto.

Dust can be reduced or removed by spraying the bubbles of the present invention. By spraying the bubbles of the present invention, it is possible to settle the dust existing in the indoor, outdoor atmosphere or closed space, and ultimately reduce or remove the dust existing in the indoor, outdoor or closed space.

For example, it is possible to reduce or remove asbestos dust by spraying the bubble of the present invention on a place where asbestos is removed. For another example, dust or radioactive material containing radioactive material may be reduced or removed by spraying the bubble of the present invention on a place containing radioactive material. For another example, by spraying the bubble of the present invention onto a space contaminated with bacteria or viruses, it is possible to reduce or remove bacteria or viruses. For another example, by spraying the bubble of the present invention in a space contaminated with poison gas, poison gas can be reduced or removed.

By using the bubble of the present invention, it is possible to remove or reduce fine or ultra-fine dust in an urban or wide area.

If the bubble of the present invention is used, fine or ultrafine dust can be removed or reduced at a low cost. In addition, since the bubble of the present invention contains ingredients that are harmless to the human body, it is possible to environmentally remove or reduce fine or ultrafine dust.

Hereinafter, examples will be described in detail to illustrate the present invention in detail. However, the following examples are only provided to more easily understand the present invention, and the contents of the present invention are not limited by the following examples.

Experiment material

The methyl cellulose used in this study was a product with a viscosity of 15 at 20°C and 2% by weight manufactured by Shin Etsu Chemical Co., Ltd. The polymer alginate (pristine sodium alginate, Mw: 446,400) was manufactured by Junsei.

Experiment result

Example 1. Comparison of bubble formation size according to the addition of natural surfactants

Bubbles were prepared using environmentally friendly and harmless surfactants such as coco betaine (Lauramidopropyl betaine), apple wash (sodium cocoyl appleamino acid), olive oil base, laural glycoside, and coglucoside.

An experimental solution (100 g) containing 70 g of purified water, 20 g of a surfactant, and 10 g of a water-soluble polymer such as glycerin or polyethyl glycol (PEG) was prepared, and 0.1 ml of the solution was taken and the diameter of a bubble formed by blowing into a 5 mm diameter round was compared.

Table 1 below compares the diameters (unit: cm) of bubbles formed according to the type of surfactant.

The larger the diameter of the bubble, the greater the ability to reduce the surface tension of the surfactant to be mixed. Thus, two surfactants that formed a bubble with a larger diameter, Cocobetaine and Apple Wash, were selected and the experiment was conducted later.

Example 2. Influence of the addition amount of surfactant on the duration of air bubbles

Polyethyl glycol (PEG) was fixed at 10 g, and the duration of pores of the bubble was measured while changing the amount of surfactant.

As for the amount of surfactant, 15g, 20g, 25g, 30g, 40g, 50g were added to each of cocobetaine and apple wash, and purified water was added to prepare an experimental solution of 100g.

Table 2 below is a comparison of the duration (unit: second) of the bubbles according to the amount of surfactant added.

The duration of the bubble depending on the amount of surfactant added was found to increase when cocobetaine was added at 20% by weight or more compared to the total composition, and increased significantly when added at 30% by weight or more in the case of apple wash.

Example 3. Effect of increasing bubble duration according to addition of methylcellulose and/or alginate

1. Preparation of experimental solution

(1) Experimental Solution I: Control Solution

Experimental solution I was prepared by mixing 50 g of purified water, 30 g of surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), and 10 g of starch syrup.

(2) Experimental Solution Ⅱ: Addition of methylcellulose

Surfactant (cocobetaine) 30g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 0.5g, 1g, 1.5g, and 2g respectively were added, and the remainder was filled with purified water, and 100g of composition (Experimental Solution II-1 To experimental solution Ⅱ-4) was prepared.

1) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 0.5 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution II-1 (100 g).

2) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 1 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution II-2 (100 g).

3) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 1.5 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution II-3 (100 g).

4) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 2 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution Ⅱ-4 (100 g).

(3) Experimental Solution III: Alginate addition

Surfactant (cocobetaine) 30g, polyethyl glycol (PEG) 10g, starch syrup 10g, alginate 0.5g, 1g, 1.5g, 2g respectively were added, and the remainder was filled with purified water, and 100g of composition (experimental solution III-1 to Experimental solution III-4) was prepared.

1) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 0.5 g of alginate were added, and the remainder was filled with purified water to prepare an experimental solution II-1 (100 g).

2) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 1 g of alginate were added, and the remainder was filled with purified water to prepare an experimental solution II-2 (100 g).

3) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 1.5 g of alginate were added, and the remainder was filled with purified water to prepare an experimental solution II-3 (100 g).

4) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, and 2 g of alginate were added, and the remainder was filled with purified water to prepare an experimental solution II-4 (100 g).

(4) Experimental Solution IV: Addition of methylcellulose and alginate

Surfactant (cocobetaine) 30g, polyethyl glycol (PEG) 10g, starch syrup 10g, alginate 0.3g, methylcellulose 0.5g, 1g, 1.5g, 2g respectively were added, and the remainder was filled with purified water and 100g of composition (experimental Solution IV-1 to Experimental Solution IV-4) were prepared.

1) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 0.3 g of alginate, and 0.5 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution IV-1 (100 g).

2) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 0.3 g of alginate, and 1 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution IV-2 (100 g).

3) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 0.3 g of alginate, 1.5 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution IV-3 (100 g).

4) 30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 0.3 g of alginate, and 2 g of methylcellulose were added, and the remainder was filled with purified water to prepare an experimental solution IV-4 (100 g).

2. Check the duration of the bubble prepared as the test solution

The bubble duration measurement method was carried out by blowing 0.1 ml of the prepared solution with a straw and measuring the time until the membrane bursts.

Table 3 below shows the duration of airspace of the bubble prepared as the experimental solution, and the prepared value is an average value of the results measured by repeating a total of 5 times.

As shown in Table 3, when 0.5 parts by weight of methyl cellulose was added based on the entire experimental solution (Experimental Solution II-1), the duration of the bubble was 10 times that of the case where methylcellulose was not added (Experimental Solution I). When the methyl cellulose was added in an amount of 1.5 parts by weight based on the total experimental solution (Experiment Solution II-3), the duration of the bubble increased more than 20 times compared to the case without addition (Experiment Solution I).

In other words, it was found that the addition of a water-soluble polymer forming a film such as methylcellulose significantly increased the duration of the bubble. On the other hand, the addition of alginate did not increase the duration of the bubble, and even when alginate was added together with methylcellulose, the duration of the bubble did not increase. This may be due to the fact that alginate does not contribute to the film formation and the large surface tension of alginate.

Example 4. Effect of the addition of EDTA on the duration of the bubble

1. Preparation of experimental solution

(1) Experimental solution Ⅴ

Surfactant (cocobetaine) 30g to 50g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, EDTA-2Na 2g were added, and the remainder was filled with purified water and 100g of composition (experimental solution V-1 to Experimental solution V-3) was prepared.

1) Experimental solution Ⅴ-1

30 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 1.5 g of methylcellulose, and 2 g of EDTA-2Na were added, and the remainder was filled with purified water to prepare an experimental solution V-1 (100 g).

2) Experimental solution Ⅴ-2

Surfactant (cocobetaine) 40g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, EDTA-2Na 2g were added, and the remainder was filled with purified water to prepare an experimental solution V-2 (100g).

3) Experimental Solution V-3

50 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 1.5 g of methylcellulose, and 2 g of EDTA-2Na were added, and the remainder was filled with purified water to prepare an experimental solution V-3 (100 g).

(2) Experimental solution VI

Surfactant (cocobetaine) 30g to 50g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, EDTA-4Na 2g were added, and the remainder was filled with purified water and 100g of composition (experimental solution VI-1 to Experimental solution VI-3) was prepared.

1) Experimental solution VI-1

Surfactant (cocobetaine) 30g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, EDTA-4Na 2g were added, and the remainder was filled with purified water to prepare an experimental solution VI-1 (100g).

2) Experimental solution VI-2

Surfactant (cocobetaine) 40g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, EDTA-4Na 2g were added, and the remainder was filled with purified water to prepare an experimental solution VI-2 (100g).

3) Experimental solution VI-3

50 g of a surfactant (cocobetaine), 10 g of polyethyl glycol (PEG), 10 g of starch syrup, 1.5 g of methylcellulose, and 2 g of EDTA-4Na were added, and the remainder was filled with purified water to prepare an experimental solution VI-3 (100 g).

(3) Experimental solution VII

Surfactant (cocobetaine) 30g to 50g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, alginate 0.3g, EDTA-2Na 2g were added, and the remainder was filled with purified water and 100g of composition (experimental solution VII-1 to experimental solution VII-3) were prepared.

1) Experimental solution VII-1

Surfactant (cocobetaine) 30g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, alginate 0.3g, EDTA-2Na 2g were added, and the rest was filled with purified water, and the experimental solution VII-1 (100g) Was prepared.

2) Experimental solution VII-2

Surfactant (cocobetaine) 40g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, alginate 0.3g, EDTA-2Na 2g were added, and the rest was filled with purified water, and the experimental solution VII-2 (100g) Was prepared.

3) Experimental solution VII-3

Surfactant (cocobetaine) 50g, polyethyl glycol (PEG) 10g, starch syrup 10g, methylcellulose 1.5g, alginate 0.3g, EDTA-2Na 2g were added, and the rest was filled with purified water, and the experimental solution VII-3 (100g) Was prepared.

2. Check the duration of the bubble prepared as the test solution

The bubble duration measurement method was conducted by blowing the prepared solution with a straw and measuring the time until the film burst.

Table 4 below shows the duration of airspace of the bubble prepared as the experimental solution, and the prepared value is an average value of the results measured by repeating a total of 5 times.

The addition of EDTA itself did not affect the duration of the bubble, but the duration of the bubble greatly increased depending on the amount of surfactant added, which is interpreted as because EDTA ions strengthen the formation of the bubble film through a chemical reaction with the surfactant. do.

The number of substituted Na thus did not affect the duration of the bubble, but 2Na-EDTA showed a longer duration of the bubble than that of 4Na-EDTA.

Example 5. Bubble settling time according to the diameter of the bubble and the concentration of fine dust

A certain amount of solution was injected with a syringe to change the amount of air to create bubbles with different diameters, and the settling time taken for each bubble to descend 1.5m in a cylinder (diameter 0.5m, height 1.65m) was calculated.

Table 5 below is a result of measuring the sedimentation time according to the diameter of the bubble and calculating the sedimentation rate, and is an average value obtained by repeatedly measuring 15 times according to the above method.

Table 6 below shows the settling time (sec) according to the diameter of the bubble and the concentration of PM10, and Table 7 shows the velocity (m/s) according to the diameter of the bubble and the concentration of PM10.

Example 6. Calculation of bubble volume and thickness of bubble film

The diameter of the bubble was changed by changing the amount of air injected into the syringe for producing a bubble, and the thickness of the bubble film was calculated using Equation 1 below.

(m: mass of the bubble, r: radius of the bubble, ρ: density of the bubble preparation solution).

Table 8 below shows the thickness of the film according to the diameter of the prepared bubble.

Example 7. Calculation of the weight of dust adsorbed on the surface according to the bubble diameter and the concentration of air pollution

The weight of the fine dust adsorbed on the bubble surface was calculated by using the change of sedimentation speed to calculate the amount of fine dust trapped in accordance with the change in the concentration of fine dust in a cylinder with a length of 1.5 m (cylinder: 0.5 m in diameter and 1.65 m in height). ).

Specifically, the amount (μg) adsorbed to the bubble was calculated using Stoke's law (Equations 2 and 3 below).

[Equation 2]

Fg (gravity) = Fb (buoyancy) + Fd (majeure) (assuming buoyancy Fb=0).

[Equation 3]

mg = 3πμDV (m = mass, g = gravitational acceleration, μ = viscosity, D = diameter, V = velocity).

If the diameters of the bubbles are the same, the viscosity is the same. Thus, two equations obtained by substituting the velocity in the daily atmosphere and the velocity in each pollution concentration were obtained in Equation 3 above, and the amount of fine dust adsorbed through the difference was obtained.

Table 9 below shows the amount of fine dust captured according to the fine dust concentration and bubble diameter.

From the above examples, it can be confirmed that the smaller the diameter of the bubble, the faster the sedimentation time (sec) of the bubble, and the larger the diameter of the bubble, the slower the sedimentation speed (m/s), so that more dust is adsorbed. I did.

In addition, it was confirmed that the higher the air pollution concentration (㎍/㎥) in the acrylic cylinder, the faster the bubble sedimentation rate (m/s), and the higher the pollution concentration, the higher the adsorption amount.

Example 8. Effect of removing fine dust from bubbles prepared with a composition containing water-soluble cellulose and surfactant

A fine dust concentration meter and a bubble machine are installed in the experimental chamber (1.3m wide, 0.75m long, 1.7m high), and the concentration of fine dust is controlled by supplying artificial fine dust by combustion using mosquito repellent. And, PM10 and PM2.5 concentrations were measured for each fine dust size.

The solution for bubble preparation was prepared by including 30% (300g) of surfactant, 10% (100g) of PEG, 10% (100g) of starch syrup, and 1.5% (15g) of methylcellulose based on the total 1000g.

As a result of measuring the concentration of fine dust, the initial concentration of PM10 was 930 ㎍/m ³ , the initial concentration of PM2.5 was 550 ㎍/m ³ , and 10 minutes after bubble spraying, PM10 was 550 ㎍/m ³ , PM2.5 was It decreased by 40.86% and 66.34%, respectively, to 174㎍/m ^{3, showing a large decrease in PM10.}

After 20 minutes of application, PM10 decreased by 84.5% and PM2.5 by 88.2%, and 30 minutes after application, PM10 decreased by 94.73% and PM2.5 by 94.78%. It was found that more than 94% of the fine dust was removed 30 minutes after spraying, regardless of the diameter of the fine dust.

Table 10 below shows the effect of removing fine dust by spraying the prepared bubbles.

Claims (13)

A composition for producing a bubble for sedimentation of dust comprising a water-soluble polymer cellulose and a surfactant.
The method according to claim 1,
The water-soluble polymer cellulose is at least one of carboxymethyl cellulose (CMC), methyl cellulose (MC), hydroxypropylmethyl cellulose (HPMC), hydroxypropyl cellulose (HPC), or hydroxyethyl cellulose (HEC). Composition for manufacturing.
The method according to claim 1,
The surfactant is at least one of cocobetaine or sodium cocoylapple amino acid, a composition for producing a bubble for sedimentation of dust.
The method according to claim 1,
A composition for producing a bubble for sedimentation of dust further comprising glycerin or polyethylene glycol.
The method according to claim 1,
A composition for producing a bubble for sedimentation of dust further comprising starch syrup.
The method according to claim 1,
A composition for producing a bubble for sedimentation of dust further comprising a chelating agent.
The method of claim 6,
The chelating agent is at least one of alanine, polyphosphate sodium, metaphosphate sodium, phosphoric acid, tartaric acid, or ethylenediamine tetraacetic acid (EDTA).
The method according to claim 1,
A composition for producing a bubble for sedimentation of dust comprising 0.01 to 10 parts by weight of the water-soluble polymer cellulose and 5 to 50 parts by weight of the surfactant.
The method of claim 4,
A composition for producing a bubble for sedimentation of dust comprising 0.01 to 10 parts by weight of a water-soluble polymer cellulose, 5 to 50 parts by weight of a surfactant, and 5 to 15 parts by weight of polyethylene glycol.
The method of claim 5,
A composition for producing a bubble for sedimentation of dust comprising 0.01 to 10 parts by weight of a water-soluble polymer cellulose, 5 to 50 parts by weight of a surfactant, and 5 to 15 parts by weight of starch syrup.
The method according to claim 1,
The dust is a composition for producing a dust sedimentation bubble having a diameter of 0.1 to 100μm.
Bubbles for sedimentation of dust prepared from the composition of any one of claims 1 to 11.
A method of removing dust by spraying the bubble of claim 12 into the atmosphere or a closed space.

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