KR102469552B1 - Activated carbon fiber doping composition, manufacturing method thereof, and activated carbon fiber filter doping method using same - Google Patents

Abstract

According to the present invention, efficiency of removing volatile organic compounds (VOCs) and ammonia (NH_3) gas is maximized by doping an activated carbon fiber filter on a doping composition composed of an aqueous solution of silver nitrate, an aqueous solution of silver sulfate, copper ion water, and an aqueous solution of titanium dioxide at high temperature and high pressure.

Description

Activated carbon fiber doping composition, manufacturing method thereof, and activated carbon fiber filter doping method using the same

In the present invention, the efficiency of removing volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas is improved by doping an activated carbon fiber filter at high temperature and high pressure with a doping composition including an aqueous solution of silver nitrate, an aqueous solution of silver sulfate, copper ion water, and an aqueous solution of titanium dioxide. It relates to an activated carbon fiber doping composition characterized in that it is maximized, a manufacturing method thereof, and an activated carbon fiber filter doping method using the same.

Ammonia (NH3) is an important chemical compound used in many industries, including fertilizers, chemicals, and fuels. However, ammonia is classified as a representative odorous substance along with hydrogen sulfide and methyl mercaptan, and is a toxic substance that can cause disease in the human body even at a low concentration of 50 to 100 ppm.

In particular, ammonia generated from the petrochemical industry, environmental infrastructure, livestock industry, etc. can cause damage to air pollution and the health of nearby residents as well as odor problems.

In addition, Volatile Organic Compounds (VOCs) generate photochemical oxidants such as ozone through a photochemical reaction with nitrogen oxides (NOx) in the air, causing photochemical smog, and carcinogenicity that causes disorders in the nervous system through skin contact or respiratory inhalation. Substances are becoming a serious problem.

Republic of Korea Patent Publication 10-2003-0039711 (2003.06.19) Republic of Korea Patent Publication 10-2003-0039715 (2003.06.19)

To solve the above problem,

In the present invention, a doping composition is prepared by mixing an aqueous solution of silver nitrate, an aqueous solution of silver sulfate, copper ion water, and an aqueous solution of titanium dioxide,

An activated carbon fiber doping composition characterized in that the doping composition is doped with an activated carbon fiber filter at high temperature and high pressure to maximize the removal efficiency of volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas, a manufacturing method thereof, and activated carbon using the same It relates to a fiber filter doping method.

In order to solve the above problem, the present invention

10.0 to 30.0 wt% of an aqueous solution of silver nitrate, 10.0 to 30.0 wt% of an aqueous solution of silver sulfate, 30.0 to 50.0 wt% of copper ion water, and 10.0 to 30.0 wt% of an aqueous solution of titanium dioxide are provided. .

In order to solve the above problem, the present invention

A silver nitrate composition prepared by adding 1.0 to 20.0 wt% of silver nitrate powder to 80.0 to 99.0 wt% of distilled water at a temperature of 50 to 70 ° C. was stirred in a stirrer at 100 to 500 rpm to form a silver nitrate aqueous solution, and the silver nitrate aqueous solution was stirred at 40 Preparing a uniform silver nitrate aqueous solution by stirring at ~ 60 ° C. at 50 ~ 100 rpm for 12 ~ 30 hours (S1);

A silver sulfate composition prepared by adding 3.0 to 20.0 wt% of silver sulfate powder to 80.0 to 97.0 wt% of distilled water at a temperature of 50 to 70 ° C. was stirred at 200 to 400 rpm in a stirrer to form a silver sulfate aqueous solution, and the prepared sulfuric acid preparing a silver sulfate aqueous solution having a uniform concentration by stirring the silver aqueous solution at 40 to 60 ° C. at 20 to 100 rpm for 12 to 30 hours (S2);

Oxygen-free copper plates are hung on the cathode and anode, and an electrolyte solution containing 10.0 to 40.0 wt% of sodium chloride (NaCl) and 60.0 to 90.0 wt% of water (H2O) is energized at a voltage of 15 to 30 V and a current of 5 A, and the electrolyte is passed through a circulation pump. A step (S3) of producing copper ionized water while preventing sludge from being generated on the cathode plate by allowing it to circulate using

A solution prepared by stirring a mixture of 12.7 to 13.0 wt% of titanium isopropoxide (TTIP) and 87.3 to 87.0 wt% of isopropyl alcohol (C ₃ H ₈ O) at 250 to 300 rpm for 15 to 20 minutes. After adding 24.0 ~ 30.0 wt% of water to 70.0 ~ 76.0 wt% of A and stirring at 450 ~ 500 rpm for 1 ~ 2 hours to prepare solution B, sodium hydroxide solution (NaOH) was added to the solution B to obtain titanium dioxide (TiO2). ) preparing a solution, mixing 10 to 20 wt% of the titanium dioxide (TiO 2 ) solution and 80 to 90 wt% of distilled water and stirring it for 5 to 6 hours to prepare a titanium dioxide aqueous solution (S4);

preparing a doping composition by mixing 10.0 to 30.0 wt% of the silver nitrate aqueous solution, 10.0 to 30.0 wt% of the silver sulfate aqueous solution, 30.0 to 50.0 wt% of copper ionized water, and 10.0 to 30.0 wt% of the titanium dioxide aqueous solution (S5). It provides a method for producing a characterized activated carbon fiber doping composition.

In order to solve the above problem, the present invention

10.0 ~ 30.0 wt% of silver nitrate aqueous solution, 10.0 ~ 30.0 wt% of silver sulfate solution, 30.0 ~ 50.0 wt% of copper ionized water, and 10.0 ~ 30.0 wt% of titanium dioxide aqueous solution. It provides an activated carbon fiber filter doping method characterized by maximizing the removal efficiency of volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas by depositing at 1 to 10 atm.

In the present invention, an activated carbon fiber filter is immersed in a doping composition composed of an aqueous solution of silver nitrate, an aqueous solution of silver sulfate, copper ion water, and an aqueous solution of titanium dioxide, and volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas are removed while doping at high temperature and high pressure. It has the effect of maximizing the removal efficiency.

1 is a view showing the ammonia gas removal efficiency of filters manufactured using activated carbon fibers manufactured through Examples 1 to 3 according to an activated carbon fiber doping composition, a manufacturing method thereof, and an activated carbon fiber filter doping method using the same .

Hereinafter, a detailed description will be given.

As the doping composition, the present invention includes 10.0 to 30.0 wt% of an aqueous silver nitrate solution, 10.0 to 30.0 wt% of an aqueous silver sulfate solution, 30.0 to 50.0 wt% of copper ionized water, and 10.0 to 30.0 wt% of an aqueous solution of titanium dioxide.

In addition, as a method for preparing a doping composition, a silver nitrate composition prepared by adding 1.0 to 20.0 wt% of silver nitrate powder to 80.0 to 99.0 wt% of distilled water at a temperature of 50 to 70 ° C. was stirred at 100 to 500 rpm in a stirrer to form a silver nitrate aqueous solution, (S1) preparing a silver nitrate aqueous solution having a uniform concentration by stirring the prepared silver nitrate aqueous solution at 40 to 60 ° C. at 50 to 100 rpm for 12 to 30 hours;

A silver sulfate composition prepared by adding 3.0 to 20.0 wt% of silver sulfate powder to 80.0 to 97.0 wt% of distilled water at a temperature of 50 to 70 ° C. was stirred at 200 to 400 rpm in a stirrer to form a silver sulfate aqueous solution, and the prepared sulfuric acid preparing a silver sulfate aqueous solution having a uniform concentration by stirring the silver aqueous solution at 40 to 60 ° C. at 20 to 100 rpm for 12 to 30 hours (S2);

Oxygen-free copper plates are hung on the cathode and anode, and an electrolyte solution containing 10.0 to 40.0 wt% of sodium chloride (NaCl) and 60.0 to 90.0 wt% of water (H2O) is energized at a voltage of 15 to 30 V and a current of 5 A, and the electrolyte is passed through a circulation pump. A step (S3) of producing copper ionized water while preventing sludge from being generated on the cathode plate by allowing it to circulate using

A solution prepared by stirring a mixture of 12.7 to 13.0 wt% of titanium isopropoxide (TTIP) and 87.3 to 87.0 wt% of isopropyl alcohol (C ₃ H ₈ O) at 250 to 300 rpm for 15 to 20 minutes. After adding 24.0 ~ 30.0 wt% of water to 70.0 ~ 76.0 wt% of A and stirring at 450 ~ 500 rpm for 1 ~ 2 hours to prepare solution B, sodium hydroxide solution (NaOH) was added to the solution B to obtain titanium dioxide (TiO2). ) preparing a solution, mixing 10.0 to 20.0 wt% of the titanium dioxide (TiO2) solution and 80.0 to 90.0 wt% of distilled water, and stirring the same for 5 to 6 hours to prepare a titanium dioxide aqueous solution (S4);

and preparing a doping composition by mixing 10.0 to 30.0 wt% of the silver nitrate aqueous solution, 10.0 to 30.0 wt% of the silver sulfate aqueous solution, 30.0 to 50.0 wt% of copper ionized water, and 10.0 to 30.0 wt% of the titanium dioxide aqueous solution (S5).

In addition, 100 to 300% of an activated carbon fiber filter is added to a doping composition prepared by mixing 10.0 to 30.0 wt% of an aqueous solution of silver nitrate, 10.0 to 30.0 wt% of an aqueous solution of silver sulfate, 30.0 to 50.0 wt% of copper ion water, and 10.0 to 30.0 wt% of an aqueous solution of titanium dioxide. It is characterized by maximizing the removal efficiency of volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas by depositing at ℃ and 1 to 10 atm.

Hereinafter, specific details according to the preparation method of the doping composition will be described.

[Preparing a silver nitrate aqueous solution (S1)]

Silver nitrate (AgNO3) is a nitrate of silver and is a silver salt that is highly soluble in water.

First, a silver nitrate composition prepared by adding 1.0 to 20.0 wt% of silver nitrate powder to 80.0 to 99.0 wt% of distilled water at a temperature of 50 to 70 ° C. is stirred in a stirrer at 100 to 500 rpm to form a silver nitrate aqueous solution.

At this time, if the temperature is 50 ° C or less, the silver nitrate powder may not dissolve, and if it exceeds 70 ° C, the chemical properties may be modified, so it is preferable to use it within a limited range.

In addition, if the distilled water is less than 80.0 wt%, the number of silver acid particles may be excessively increased and aggregated, and if the distilled water exceeds 99.0 wt%, it is not easy to prepare silver nitrate, so it is preferable to use it within a limited range.

In addition, in the method for producing the silver nitrate composition, the most preferable example is to add 4.7 wt% of silver nitrate powder to 95.3 wt% of distilled water at 60° C. to form a silver nitrate composition. Thereafter, by stirring at 300 rpm in a stirrer, an aqueous solution of silver nitrate is formed.

Next, the prepared silver nitrate aqueous solution is stirred at 40 to 60 ° C. at 50 to 100 rpm for 12 to 30 hours to prepare a uniform silver nitrate aqueous solution.

More specifically, the silver nitrate aqueous solution prepared above is stirred at 50°C and 50 rpm for 24 hours to prepare a uniform silver nitrate aqueous solution.

[Preparing an aqueous solution of silver sulfate (S2)]

Silver sulfate is an inorganic compound with the chemical formula Ag₂SO₄ and is a white solid.

First, 3.0 to 20.0 wt% of silver sulfate powder is added to 80.0 to 97.0 wt% of distilled water at a temperature of 50 to 70 °C. Accordingly, the prepared silver sulfate composition is stirred in a stirrer at 200 to 400 rpm to form a silver sulfate aqueous solution.

At this time, if the temperature is 50 ℃ or less, silver sulfuric acid powder may not be properly dissolved, and if it exceeds 70 ℃, the chemical properties may be modified, so it is preferable to use it within a limited range.

In addition, if the distilled water is less than 80.0 wt%, the number of sulfuric acid powder particles may be excessively increased and aggregated, and if the distilled water exceeds 97.0 wt%, it is not easy to prepare a powder aqueous solution, so it is preferable to use it in a limited range. do.

In addition, in the method for producing an aqueous solution of silver sulfate, 9.09 wt% of silver sulfate powder is added to 91.1 wt% of distilled water having a temperature of 60 °C. Accordingly, the prepared silver sulfate composition is stirred in a stirrer at 300 rpm to form a silver sulfate aqueous solution.

The prepared silver sulfate aqueous solution is stirred at 40 to 60 °C at 20 to 100 rpm for 12 to 30 hours to prepare a uniformly concentrated silver sulfate aqueous solution.

More specifically, the prepared silver sulfate aqueous solution was stirred at 50° C. at 50 rpm for 24 hours to prepare a uniform silver sulfate aqueous solution.

[Producing Copper Ionized Water (S3)]

First, an electrolyte solution is prepared by mixing 10.0 to 40.0 wt% of sodium chloride (NaCl) and 60.0 to 90.0 wt% of water (H2O) by hanging oxygen-free copper plates on the cathode and anode.

If the sodium chloride is less than 10.0 wt%, it may be difficult to function as an electrolyte through which current flows, and if it exceeds 40.0 wt%, the base becomes strong and becomes an excessively strong electrolyte, so it is preferable to use it in a limited range.

Thereafter, the electrolyte is energized at a voltage of 15 to 30 V and a current of 5 A, and the electrolyte is circulated using a circulation pump to produce copper ionized water while preventing sludge from being generated on the cathode plate.

[Preparing an aqueous photocatalyst solution (S4)]

First, titanium dioxide is also called titanium dioxide or titanium dioxide, and its chemical formula is TiO ₂ .

The photocatalyst aqueous solution is prepared by mixing a titanium dioxide (TiO2) solution prepared by a sol method with distilled water and stirring at room temperature, and more specifically,

A solution prepared by mixing 12.7 to 13.0 wt% of titanium isopropoxide (TTIP) and 87.3 wt% to 87.0 wt% of isopropyl alcohol (C ₃ H ₈ O) by stirring at 250 to 300 rpm for 15 to 20 minutes. make A.

Thereafter, 24.0 to 30.0 wt% of water was added to 70.0 to 76.0 wt% of the solution A, and solution B was prepared by stirring at 450 to 500 rpm for 1 to 2 hours.

Thereafter, sodium hydroxide solution (NaOH) is added to the solution B to prepare a titanium dioxide (TiO 2 ) solution.

Thereafter, 10.0 to 20.0 wt% of the titanium dioxide (TiO 2 ) solution and 80.0 to 90.0 wt% of distilled water are mixed and stirred at room temperature for 5 to 6 hours to prepare a titanium dioxide aqueous solution, which is an aqueous photocatalyst solution.

[Preparing the doping composition (S5)]

First, a doping composition is prepared by mixing 10.0 to 30.0 wt% of the silver nitrate aqueous solution, 10.0 to 30.0 wt% of the silver sulfate aqueous solution, 30.0 to 50.0 wt% of copper ionized water, and 10.0 to 30.0 wt% of the titanium dioxide aqueous solution.

More specifically, a doping composition is prepared by mixing 17.0 wt% of an aqueous solution of silver nitrate, 17.0 wt% of an aqueous solution of silver sulfate, 50.0 wt% of copper ionized water, and 16.0 wt% of an aqueous solution of titanium dioxide.

below. A specific example of mixing according to the doping composition will be reviewed through Table 1.

Formulation example 1 Combination example 2 Combination example 3 Formulation example 4 silver nitrate aqueous solution 30.0wt% 17.0wt% 20.0wt% 10.0 wt % aqueous solution of silver sulfate 20.0wt% 17.0wt% 20.0wt% 30.0wt% copper ionized water 40.0 wt % 50.0 wt % 40.0 wt % 50.0 wt % Titanium dioxide aqueous solution 10.0 wt % 16.0wt% 20.0wt% 10.0 wt % Sum 100wt% 100wt% 100wt% 100wt%

Hereinafter, a method of doping the activated carbon fiber will be described.

10.0 ~ 30.0 wt% of silver nitrate aqueous solution, 10.0 ~ 30.0 wt% of silver sulfate solution, 30.0 ~ 50.0 wt% of copper ionized water, and 10.0 ~ 30.0 wt% of titanium dioxide aqueous solution. It is achieved by immersion at 1 to 10 atm.

As a result, an activated carbon fiber filter with maximized removal efficiency of volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas can be manufactured.

Hereinafter, to examine the removal efficiency according to the mixture. The ammonia gas removal efficiency of the activated carbon fiber filter prepared through Examples 1 to 3 below is shown in FIG. 1.

Example 1

It is achieved by immersing an activated carbon fiber filter at 200° C. and 5 atmospheres in a doping composition composed by mixing 17.0 wt% of an aqueous solution of silver nitrate, 17.0 wt% of an aqueous solution of silver sulfate, 50.0 wt% of copper ionized water, and 16.0 wt% of an aqueous solution of titanium dioxide.

Example 2

It is achieved by immersing the activated carbon fiber filter in a doping composition composed of mixing 30.0 wt% of silver nitrate aqueous solution, 10.0 wt% of silver sulfate aqueous solution, 40.0 wt% of copper ionized water, and 20.0 wt% of titanium dioxide aqueous solution at 200° C. and 5 atmospheric pressure.

Example 3

It is achieved by immersing an activated carbon fiber filter in a doping composition composed by mixing 20.0 wt% of an aqueous solution of silver nitrate, 20.0 wt% of an aqueous solution of silver sulfate, 40.0 wt% of copper ionized water, and 20.0 wt% of an aqueous solution of titanium dioxide at 200° C. and 5 atmospheric pressure.

As it can efficiently remove volatile organic compounds (VOCs) and ammonia (NH ₃ ) gas, which are toxic substances that can cause diseases in the human body, which are emerging as social problems, the activated carbon fiber filter of the present invention will create a sensation in this field. As expected, the potential for industrial use is very high.

Claims (3)

delete A silver nitrate composition prepared by adding 1.0 to 20.0 wt% of silver nitrate powder to 80.0 to 99.0 wt% of distilled water at a temperature of 50 to 70 ° C. was stirred in a stirrer at 100 to 500 rpm to form a silver nitrate aqueous solution, and the silver nitrate aqueous solution was stirred at 40 Preparing a uniform silver nitrate aqueous solution by stirring at ~ 60 ° C. at 50 ~ 100 rpm for 12 ~ 30 hours (S1);

A silver sulfate composition prepared by adding 3.0 to 20.0 wt% of silver sulfate powder to 80.0 to 97.0 wt% of distilled water at a temperature of 50 to 70 ° C. was stirred at 200 to 400 rpm in a stirrer to form a silver sulfate aqueous solution, and the prepared sulfuric acid preparing a silver sulfate aqueous solution having a uniform concentration by stirring the silver aqueous solution at 40 to 60 ° C. at 20 to 100 rpm for 12 to 30 hours (S2);

Oxygen-free copper plates are hung on the cathode and anode, and an electrolyte solution containing 10.0 to 40.0 wt% of sodium chloride (NaCl) and 60.0 to 90.0 wt% of water (H2O) is energized at a voltage of 15 to 30 V and a current of 5 A, and the electrolyte is passed through a circulation pump. A step (S3) of producing copper ionized water while preventing sludge from being generated on the cathode plate by allowing it to circulate using

A solution prepared by stirring a mixture of 12.7 to 13.0 wt% of titanium isopropoxide (TTIP) and 87.3 to 87.0 wt% of isopropyl alcohol (C ₃ H ₈ O) at 250 to 300 rpm for 15 to 20 minutes. After adding 24.0 ~ 30.0 wt% of water to 70.0 ~ 76.0 wt% of A and stirring at 450 ~ 500 rpm for 1 ~ 2 hours to prepare solution B, sodium hydroxide solution (NaOH) was added to the solution B to obtain titanium dioxide (TiO2). ) preparing a solution, mixing 10.0 to 20.0 wt% of the titanium dioxide (TiO2) solution and 80.0 to 90.0 wt% of distilled water, and stirring it for 5 to 6 hours to prepare a titanium dioxide aqueous solution (S4);

preparing a doping composition by mixing 10.0 to 30.0 wt% of the silver nitrate aqueous solution, 10.0 to 30.0 wt% of the silver sulfate aqueous solution, 30.0 to 50.0 wt% of copper ionized water, and 10.0 to 30.0 wt% of the titanium dioxide aqueous solution (S5). Characterized in the manufacturing method of the doped composition for activated carbon fibers







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