KR20080065102A - Method for preparing silver impregnated bamboo activated carbon - Google Patents

Method for preparing silver impregnated bamboo activated carbon Download PDF

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KR20080065102A
KR20080065102A KR1020070002071A KR20070002071A KR20080065102A KR 20080065102 A KR20080065102 A KR 20080065102A KR 1020070002071 A KR1020070002071 A KR 1020070002071A KR 20070002071 A KR20070002071 A KR 20070002071A KR 20080065102 A KR20080065102 A KR 20080065102A
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activated carbon
silver
bamboo activated
impregnated
hours
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KR1020070002071A
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Korean (ko)
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박영철
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경상대학교산학협력단
보림산업 주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30—Processes for preparing, regenerating, or reactivating
    • B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
    • B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
    • B01J20/3234—Inorganic material layers
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/354—After-treatment
    • C01B32/36—Reactivation or regeneration
    • C01B32/366—Reactivation or regeneration by physical processes, e.g. by irradiation, by using electric current passing through carbonaceous feedstock or by using recyclable inert heating bodies
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/30—Active carbon
    • C01B32/354—After-treatment
    • C01B32/372—Coating; Grafting; Microencapsulation
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G5/00—Compounds of silver

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Abstract

A method for preparing silver-impregnated bamboo activated carbon with a silver content of at least 0.001% by using mesoporous bamboo activated carbon as a raw material is provided, wherein the silver-impregnated bamboo activated carbon can be utilized as a filtering material for drinking water or a filter for high quality cigarettes since the silver-impregnated bamboo activated carbon has antibacterial properties. A method for preparing silver-impregnated bamboo activated carbon comprises the steps of: sorting bamboo activated carbon with a particle size corresponding to final product uses in the sieving process; submersing the sorted bamboo activated carbon into the aqueous silver nitrate solution at room temperature for two or more hours in a submersion tank containing an aqueous silver nitrate solution into which silver nitrate is dissolved in the amount of at least 0.001% of the injection amount of the bamboo activated carbon, or an aqueous silver nitrate solution prepared by heating, agitating and dissolving metal silver and an aqueous nitric acid solution in the amount of at least 0.001% of the injection amount of the bamboo activated carbon; passing silver-impregnated bamboo activated carbon through a filtering process using a filter such as a filtration filter or a centrifugal filter to separate the aqueous solution from the silver-impregnated bamboo activated carbon, and washing the silver-impregnated bamboo activated carbon four to five times by using washing water; and primarily drying the washed silver-impregnated bamboo activated carbon at a temperature of 100 to 200 deg.C for 24 hours, and secondly drying the primarily dried silver-impregnated bamboo activated carbon at a temperature of 130 to 150 deg.C for 24 hours to prepare silver-impregnated bamboo activated carbon with excellent antibacterial properties and detergency resistance containing silver in the amount of at least 0.001% based on the activated carbon weight in mesoporous bamboo activated carbon.

Description

은 첨착 대나무 활성탄의 제조방법{Method for preparing silver impregnated bamboo activated carbon}Method for preparing silver impregnated bamboo activated carbon {Method for preparing silver impregnated bamboo activated carbon}

도 1은 본 발명에 따른 은 첨착 대나무 활성탄을 제조하는 공정을 보여주기 위한 블록다이아그램이다.1 is a block diagram showing a process for producing a silver-impregnated bamboo activated carbon according to the present invention.

도 2는 본 발명에 따른 방법을 사용하여 여러 가지 농도를 가진 질산은 용액에 대나무 활성탄을 침적시켰을 때 시간 변화에 따른 침적 용액 내의 은 농도 변화를 나타내는 그래프이다.Figure 2 is a graph showing the change in the concentration of silver in the deposition solution with time when bamboo activated carbon was deposited in a silver nitrate solution having various concentrations using the method according to the present invention.

도 3은 침적 용액의 농도 변화에 따른 대나무 활성탄의 은 첨착량 변화를 나타낸 그래프이다.3 is a graph showing a change in silver deposition amount of bamboo activated carbon according to the concentration change of the deposition solution.

도 4는 본 발명에 따른 방법을 사용하여 만든 은 첨착 대나무 활성탄 제품의 세공 표면을 촬영한 사진이다.Figure 4 is a photograph of the pore surface of the silver impregnated bamboo activated carbon product made using the method according to the present invention.

본 발명은 대나무 활성탄에 금속 은을 첨착시켜 항균성이 우수한 은 첨착 대나무 활성탄을 제조하는 방법에 관한 것이다. 더욱 상세하게는 중간 세공이 발달한 대나무 활성탄을 원료로 하여 질산은 수용액이나 금속 은을 질산에 용해시킨 은 수 용액에 함침시킨 후 여과 수세 후 건조 과정을 거쳐 은 함유량이 활성탄 무게 기준 0.001 % 이상 함유된 은 첨착 대나무 활성탄을 제조하는 방법에 관한 것이다. The present invention relates to a method for producing silver-impregnated bamboo activated carbon having excellent antibacterial property by impregnating metal silver on bamboo activated carbon. More specifically, impregnated silver activated nitrate or silver silver solution with metallic silver dissolved in nitric acid using bamboo activated carbon with medium pores as a raw material, and after filtration washing with water, the silver content contained 0.001% or more by weight of activated carbon. Relates to a process for producing impregnated bamboo activated carbon.

일반적으로 활성탄은 비표면적이 1,000

Figure 112007001758327-PAT00001
이상으로 크므로 흡착 특성이 높아 수 처리 용도와 기체 분리 용도로 많이 사용되고 있다. 또한 수 처리재로 사용될 경우 세공 내에 미생물을 흡착시키는 담체 역할도 한다. 이러한 미생물 들은 유기물의 생물학적 분해 작용도 하지만 병원성 미생물이 있는 경우 활성탄 내에 흡착된 유기물을 영양화하여 급속한 번식이 이루어지므로 병원성 미생물의 공급 장소로 작용하게 된다. 따라서 미생물의 살균 작용을 가진 은을 활성탄에 첨착시키는 방법이 제안되었다.Activated carbon generally has a specific surface area of 1,000
Figure 112007001758327-PAT00001
Since the adsorption property is large, it is widely used for water treatment and gas separation. When used as a water treatment material also serves as a carrier to adsorb microorganisms in the pores. These microorganisms also act as biodegradable organisms, but in the presence of pathogenic microorganisms, they nourish the organic matter adsorbed in activated carbon, so that rapid breeding occurs. Therefore, a method of adhering silver having activated bactericidal action to activated carbon has been proposed.

활성탄은 원료 물질의 종류에 따라 내부세공 형상이 달라지므로 활성탄소섬유에 은을 첨착하거나 [공업화학, 13(2), 166-172 (2002)], [화학공학, 41(5), 649-654 (2003)], 야자각을 원료로 한 활성탄소에 은을 첨착한 경우 [공업화학, 9(5), 729-733 (1998)], 활성탄 내에 미세 세공분포가 매우 높으므로 은 이온이 세공 내부로까지 침투하지 못하고 표면에서만 결정을 성장시키므로 공정에 사용 시 내세척성이 매우 낮다.Activated carbon has a different internal pore shape depending on the type of raw material. Therefore, silver is added to activated carbon fiber [Industrial Chemistry, 13 (2), 166-172 (2002)], [Chemical Engineering, 41 (5), 649- 654 (2003)], in the case of impregnating silver with activated carbon based on coconut shell [Industrial Chemistry, 9 (5), 729-733 (1998)], since the fine pore distribution in activated carbon is very high, It does not penetrate into the interior and only grows crystals on the surface, resulting in very low wash resistance when used in the process.

대나무 활성탄의 경우 20∼500Å 범위의 중간세공이 잘 발달되어 있으므로 [화학공학, 43(1), 146-152 (2005)], 세공 내부로까지 은이 침투하므로 공정에 사용 시 은이 쉽게 유실되지 않고 견고하게 유지되므로 장시간에 살균 특성을 나타내게 된다.In the case of bamboo activated carbon, the fine pores in the range of 20 ~ 500Å are well developed [Chemical Engineering, 43 (1), 146-152 (2005)], and the silver penetrates into the pores. It is maintained so that it will exhibit sterilization characteristics for a long time.

이에 본 발명은 중간 세공 크기가 발단한 대나무 활성탄을 원료로 하여 은 함유량이 0.001% 이상인 은 첨착 대나무 활성탄을 제조하는 방법을 제공하는데 그 목적이 있다.Accordingly, an object of the present invention is to provide a method for producing silver-impregnated bamboo activated carbon having a silver content of 0.001% or more using bamboo activated carbon having a medium pore size as a raw material.

본 발명의 방법에 의해서 제조된 은 첨착 대나무 활성탄은 항균성을 가지므로 음용수용 여과재나 고급 담배의 필터용 등으로 활용이 가능하다.Since the silver-impregnated bamboo activated carbon produced by the method of the present invention has antibacterial properties, it can be utilized as a filter medium for drinking water or a filter for high-quality tobacco.

본 발명의 은 첨착 대나무 활성탄의 제조방법은, The manufacturing method of the silver impregnated bamboo activated carbon of this invention,

체가름 공정에서 활성탄 최종 제품 용도에 맞는 입자 크기를 가진 원료 대나무 활성탄을 선별하는 단계; Selecting raw bamboo activated carbon having a particle size suitable for use of the activated carbon end product in a sieving process;

상기 단계에서 선별된 대나무 활성탄을 최종 제품인 은 첨착 대나무 활성탄의 은 첨착 농도에 맞는 양이 용해된 질산은 수용액이나, 은 첨착 대나무 활성탄의 은 첨착 농도에 맞는 양의 금속 은과 질산 수용액을 가열 교반 용해 시켜 제조한 질산은 수용액이 담겨있는 침적조에서 상온에서 2시간 이상 침적하는 단계; The aqueous solution of silver nitrate dissolved in the amount of silver impregnated bamboo activated carbon, which is the final product of the silver impregnated bamboo activated carbon, dissolved in the above-mentioned step, or by heating, stirring and dissolving the metal silver and nitric acid solution in an amount corresponding to the silver impregnated concentration of silver impregnated bamboo activated carbon Immersing the prepared silver nitrate at room temperature for 2 hours or more in an immersion tank containing an aqueous solution;

상기 침적이 완료된 후 생성된 은 첨착 대나무 활성탄을 필터여과기나 원심여과기를 이용한 여과공정을 통하여 수용액을 분리 시킨 후 4∼5회 세척수로 세척하는 단계; 및Separating the aqueous solution through the filtration process using a filter filter or a centrifugal filter of the silver-impregnated bamboo activated carbon produced after the deposition is completed, and then washing with 4 to 5 wash water; And

상기 세척이 완료 된 후 약 100℃ 정도의 온도에서 24시간 건조 후 다시 130∼150℃ 온도에서 24시간 건조하여 중간세공이 발달한 대나무 활성탄에 은 함유량이 활성탄 무게 기준 0.001 % 이상 함유된 항균성과 내세척력이 우수한 첨착 대나무 활성탄을 제조하는 단계로 이루어진 것을 특징으로 한다.After the washing is completed, the drying is performed for 24 hours at a temperature of about 100 ℃ and then dried for 24 hours at a temperature of 130 ~ 150 ℃ again, the antimicrobial resistance that contains silver content in the activated activated carbon carbon medium more than 0.001% by weight based on the weight of activated carbon Characterized in that it comprises a step of producing an impregnated bamboo activated carbon excellent in washing power.

이와 같은 본 발명을 첨부한 도면에 의거하여 더욱 상세하게 설명하면 다음과 같다. 하기에서 본 발명을 설명함에 있어 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다. 그리고 후술하는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서, 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있으며, 이에 따라 각 용어의 의미는 본 명세서 전반에 걸친 내용을 토대로 해석되어야 할 것이다. When described in more detail based on the accompanying drawings of the present invention as follows. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. And the following terms are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user, operator, etc. Accordingly, the meaning of each term should be interpreted based on the contents throughout the present specification. will be.

첨부 도면 중 도 1은 본 발명에 따른 은 첨착 대나무 활성탄을 제조하는 공정을 보여주기 위한 블록다이아그램으로서, 먼저 은 첨착 대나무 활성탄 최종 제품 용도에 맞는 입자 크기를 가진 원료 대나무 활성탄을 선별, 예를 들면 정수용 은 첨착대나무 활성탄의 경우 10/60 mesh, 담배필터용 은 첨착대나무 활성탄의 경우 40/60 mesh, 은 첨착대나무 활성탄 페인트의 경우 200 mesh 이하 등으로 선별하기 위하여 상기 대나무 활성탄 원료를 체가름 공정에 투입한다.1 is a block diagram for showing a process for producing a silver impregnated bamboo activated carbon according to the present invention, first screening raw bamboo activated carbon having a particle size suitable for use of the silver impregnated bamboo activated carbon end product, for example The bamboo activated carbon raw material is subjected to a sieving process to select 10/60 mesh for purified silver impregnated bamboo activated carbon for water purification, 40/60 mesh for silver impregnated bamboo activated carbon for tobacco filter, and 200 mesh or less for silver impregnated bamboo activated carbon paint. Input.

다음에 상기 체가름 공정에서 선별된 대나무 활성탄은 침적 공정에서 질산은 용액에 침적시키며, 침적공정에서 은으로는 질산은 또는 금속은이 사용될 수 있다.Next, the bamboo activated carbon selected in the sifting process is deposited in a silver nitrate solution in the deposition process, and silver nitrate or metal silver may be used as silver in the deposition process.

질산은을 원료로 사용할 경우 대나무활성탄 투입 양의 0.001% 이상의 질산은을 평량하여 물에 용해시켜 질산은 수용액을 제조하여 사용한다.When using silver nitrate as raw material, more than 0.001% of bamboo activated carbon Silver nitrate is weighed and dissolved in water to prepare an aqueous solution of silver nitrate.

금속 은을 사용할 경우에는 대나무활성탄 투입 양의 0.001% 이상의 금속 은을 평량하여 내산성 용기에 투입하고 여기에 물과 1:1로 희석한 질산을 가하여 가열 교반하여

Figure 112007001758327-PAT00002
기체를 날려 보내면서 완전히 용해시킨다. 용해가 완료 된 후 동량의 물을 가하여 희석 냉각 시킨 후, 물이 담겨 있는 교반 침적조에 서서히 주입하여 묽은 질산은 용액으로 만들어 준다.If metal silver is used, 0.001% or more of bamboo activated carbon The metal silver was weighed into a acid resistant container, and nitric acid diluted 1: 1 with water was added thereto, followed by heating and stirring.
Figure 112007001758327-PAT00002
Dissolve completely by blowing off the gas. After dissolution is completed, the same amount of water is added to the mixture and cooled. After dilution and cooling, the solution is slowly injected into a stirring tank containing water to make diluted silver nitrate solution.

이 때 고 농도에서 대나무활성탄을 침적시킬 경우 생성되는 첨착 은 입자 크기가 커지므로 수용액 부피는 침적시킬 대나무 활성탄 부피의 5배 이상을 유지하는 것이 바람직하다.At this time, since the impregnation produced when depositing the bamboo activated carbon at a high concentration increases the particle size, it is preferable to maintain the volume of the aqueous solution at least five times the volume of the bamboo activated carbon to be deposited.

상기 침적조에 0.002 mol/L ~ 0.1 mol/L 농도의 질산은 용액이 준비되면 대나무활성탄을 투입하고 교반기로 서서히 교반하면서 상온에서 2시간 이상 침적공정을 유지한다. When the silver nitrate solution of 0.002 mol / L ~ 0.1 mol / L concentration in the immersion tank is prepared, the bamboo activated carbon is added and slowly stirred with a stirrer to maintain the deposition process at room temperature for 2 hours or more.

첨부 도면 중 도 2는 본 발명에 따른 방법을 사용하여 여러 가지 농도를 가진 질산은 용액에 대나무 활성탄을 침적시켰을 때 시간 변화에 따른 침적 용액 내의 은 농도(은 첨착량) 변화를 나타내는 그래프로서, 초기 은 수용액의 농도가 예를들어 0.002 mol/L, 0.005 mol/L, 0.01 mol/L로 변화될 경우 최종 대나무활성탄의 은 첨착량은 달라지지만 약 2시간 이후로는 포화첨착량에 도달하는 것을 알 수 있다.2 is a graph showing a change in silver concentration (silver adhesion amount) in the deposition solution with time change when bamboo activated carbon was deposited in a silver nitrate solution having various concentrations using the method according to the present invention. When the concentration of the aqueous solution is changed to, for example, 0.002 mol / L, 0.005 mol / L, and 0.01 mol / L, the amount of silver impregnation of the final bamboo activated carbon will be different, but it will be reached after about 2 hours. have.

상기 단계에서와 같이 침적이 완료된 후 생성된 은 첨착 대나무 활성탄을 필터여과기나 원심여과기 등에서 여과공정을 수행하여 수용액과 분리 시킨 후 4∼5회 세척수로 세척을 하고, 세척이 완료 된 후에는 100~200 ℃ 의 온도에서 24시간 건조 후 다시 130∼150℃ 온도에서 24시간 건조를 완료한다.The silver-impregnated bamboo activated carbon produced after the deposition is completed as in the above step is separated from the aqueous solution by performing a filtration process in a filter filter or a centrifugal filter, and washed with 4 to 5 times of washing water. After drying for 24 hours at a temperature of 200 ℃ again drying is completed for 24 hours at a temperature of 130 ~ 150 ℃.

상기와 같은 공정에 의하여 중간세공이 발달한 대나무 활성탄에 은 함유량이 활성탄 무게 기준으로 0.001% 이상 함유된 은 첨착 대나무 활성탄이 제조되며, 이 러한 은 첨착 대나무 활성탄은 항균성과 내세척력이 우수한 특징을 보이게 된다. By the above process, silver impregnated bamboo activated carbon containing silver content of 0.001% or more based on the weight of activated carbon is produced in the bamboo activated carbon with medium pore development, and the silver impregnated bamboo activated carbon exhibits excellent antibacterial and washing resistance. do.

도 3은 침적 질산은 용액의 농도 변화에 따른 대나무 활성탄의 은 첨착량 변화를 나타낸 그래프로서, 초기 은 수용액이 0.005 mol/L, 0.01 mol/L, 0.02 mol/L, 0.05 mol/L, 0.1 mol/L 로 변화됨에 따라 2시간동안 첨착시켜 제품화한 은 첨착 대나무 활성탄 내의 은 첨착량은 각각 1.38 mg Ag/g 활성탄(0.14 %), 4.98mg Ag/g 활성탄(0.5 %), 18.07 mg Ag/g 활성탄 (1.8 %), 53.97mg Ag/g 활성탄(5.40 %), 88.66 mg Ag/g 활성탄 (8.87%)로 나타나 침적 은 농도를 달리하므로 최종 제품의 은 첨착량을 조절 할 수 있음을 알 수 있다. 3 is a graph showing the change of silver deposition amount of bamboo activated carbon according to the concentration change of silver nitrate solution, the initial silver aqueous solution is 0.005 mol / L, 0.01 mol / L, 0.02 mol / L, 0.05 mol / L, 0.1 mol / The amount of silver impregnation in the silver impregnated bamboo activated carbon produced by impregnation for 2 hours as L was changed to 1.38 mg Ag / g activated carbon (0.14%), 4.98 mg Ag / g activated carbon (0.5%), and 18.07 mg Ag / g activated carbon, respectively. (1.8%), 53.97mg Ag / g activated carbon (5.40%), 88.66 mg Ag / g activated carbon (8.87%), and the deposition silver concentration is different, so it can be seen that the amount of silver deposition in the final product can be controlled.

한편, 도 4는 본 발명에 따른 방법을 사용하여 최종적으로 생성된 은 첨착 대나무 활성탄 제품의 세공 표면을 촬영한 사진이다.On the other hand, Figure 4 is a photograph of the pore surface of the silver-impregnated bamboo activated carbon product finally produced using the method according to the invention.

이와 같은 본 발명을 실시예에 의거하여 더욱 상세하게 설명하면 다음과 같다. The present invention will be described in more detail based on the following examples.

실시 예 1Example 1

100

Figure 112007001758327-PAT00003
비이커에 질산은 0.835 g을 넣고 물 50
Figure 112007001758327-PAT00004
를 넣어 잘 교반시키며 용해를 완료한 뒤, 1 L 용량 플라스크에 잘 세척하여 옮기고 증류수로 1 L 눈금가지 맞추어 0.005 mol/L 질산은 수용액을 제조하였다. 2 L 비커에 0.005 mol/L 질산은 수용액 1 L를 붓고 건조시킨 200 mesh 이하의 미분 대나무활성탄 100 g을 투입하고 잘 교반시키면서 2시간동안 침적을 시켜 수용액상의 은 이온이 활성탄 세공 내부까지 잘 흡착 되도록 한다. 흡착이 완료 된 후 여지가 있는 깔때기에서 여과를 완료한 후 온수를 가하여 4∼5 차례 수세하였다. 수세가 완료 된 후 100 ℃의 온풍 건조기에서 24시간 건조하고, 다시 온풍건조기 온도를 130 ℃까지 높인 후 24시간 건조를 완료하였다. 은 첨착 대나무 활성탄 약 0.1 g을 도가니에 평량하고 약 800 ℃의 전기로에서 약 6시간동안 완전 회화시킨 후 상온에서 방냉 후 도가니를 20 % 질산용액 20
Figure 112007001758327-PAT00005
로 용해 후 잘 세척하여 100
Figure 112007001758327-PAT00006
용량 플라스크에 옮기고 눈금까지 물로 희석하였다.100
Figure 112007001758327-PAT00003
In a beaker, add 0.835 g of silver nitrate and water 50
Figure 112007001758327-PAT00004
After stirring well to complete the dissolution, washed well in a 1 L volumetric flask and transferred to 1L scale with distilled water to prepare a 0.005 mol / L silver nitrate aqueous solution. Pour 1 liter of 0.005 mol / L silver nitrate solution into a 2 L beaker, add 100 g of finely divided bamboo activated carbon of 200 mesh or less, and deposit it for 2 hours with stirring. . After the adsorption was completed, the filtration was completed in a funnel, then washed with warm water 4-5 times. After washing with water is completed, dried in a hot air dryer of 100 ℃ for 24 hours, and again to increase the temperature of the hot air dryer to 130 ℃ and completed drying for 24 hours. Approximately 0.1 g of silver-impregnated bamboo activated carbon is weighed into a crucible and completely incubated for about 6 hours in an electric furnace at about 800 ° C.
Figure 112007001758327-PAT00005
After dissolving into 100
Figure 112007001758327-PAT00006
Transfer to a volumetric flask and dilute with water to the graduation.

용량 플라스크를 잘 혼합 후 용액 10

Figure 112007001758327-PAT00007
를 분취하여 ICP를 사용하여 은 농도를 측정하여 최종 제품의 은 함유량을 분석한 결과 0.14 % 은 함유 대나무활성탄이 제조된 것을 확인하였다.After mixing the volumetric flask well solution 10
Figure 112007001758327-PAT00007
As a result of analyzing the silver content of the final product by measuring the concentration of silver by using ICP, it was confirmed that 0.14% silver-containing bamboo activated carbon was prepared.

실시 예 2Example 2

500

Figure 112007001758327-PAT00008
비이커에 물과 1:1로 희석한 질산 50
Figure 112007001758327-PAT00009
를 넣고 금속 은 5.23 g을 넣고 가열 용해하면서 질산가스를 날렸다. 용해가 완료된 후 생성된 질산은 수용액을 2 L 비커에 옮기고 전체 액량이 1500
Figure 112007001758327-PAT00010
되도록 물로 희석하였다. 건조시킨 40/60 mesh의 대나무활성탄 250 g을 투입하고 잘 교반시키면서 2시간동안 침적시켜 수용액상의 은 이온이 활성탄 세공 내부까지 잘 흡착 되도록 하였다. 흡착이 완료 된 후 여지가 있는 깔때기에서 여과를 완료한 후 온수를 가하여 4∼5 차례 수세하였다. 수세가 완료 된 후 100 ℃의 온풍건조기에서 24시간 건조하고, 다시 온풍건조기 온도를 130 ℃까지 높인 후 24시간 건조를 완료하였다. 500
Figure 112007001758327-PAT00008
Nitric acid 50: 1 diluted with water in a beaker
Figure 112007001758327-PAT00009
5,23 g of metal silver was added thereto, followed by heating and melting to blow nitric acid gas. After dissolution is completed, the resulting silver nitrate solution is transferred to a 2 L beaker and the total amount of liquid is 1500
Figure 112007001758327-PAT00010
Dilute with water as much as possible. 250 g of dried 40/60 mesh bamboo activated carbon was added thereto, and the mixture was deposited for 2 hours while stirring. The silver ions in the aqueous solution were well adsorbed to the inside of the activated carbon pores. After the adsorption was completed, the filtration was completed in a funnel, then washed with warm water 4-5 times. After washing with water is completed in a hot air dryer at 100 ℃ for 24 hours, and again to increase the temperature of the hot air dryer to 130 ℃ 24 hours to complete the drying.

은 첨착 대나무 활성탄 약 0.1 g을 도가니에 평량하고 약 800 ℃의 전기로에서 약 6시간동안 완전 회화시킨 후 상온에서 방냉 후 도가니를 20 % 질산용액 20

Figure 112007001758327-PAT00011
로 용해 후 잘 세척하여 100
Figure 112007001758327-PAT00012
용량 플라스크에 옮기고 눈금까지 물로 희석하였다.Approximately 0.1 g of silver-impregnated bamboo activated carbon is weighed into a crucible and completely incubated for about 6 hours in an electric furnace at about 800 ° C.
Figure 112007001758327-PAT00011
After dissolving into 100
Figure 112007001758327-PAT00012
Transfer to a volumetric flask and dilute with water to the graduation.

용량 플라스크를 잘 혼합 후 용액 10

Figure 112007001758327-PAT00013
를 분취하여 ICP를 사용하여 은 농도를 측정하여 최종 제품의 은 함유량을 분석한 결과 2 % 은 함유 대나무활성탄이 제조된 것을 확인하였다.After mixing the volumetric flask well solution 10
Figure 112007001758327-PAT00013
As a result of analyzing the silver content of the final product by measuring the concentration of silver by using ICP, it was confirmed that 2% silver-containing bamboo activated carbon was produced.

대나무 활성탄에 은을 첨착시킨 은 첨착대나무 활성탄은 은의 항균 효과로 인하여 액체용 여과재로 사용 시 활성탄 내부에 흡착된 유해한 미생물을 살균시킬 수 있으므로 여과재의 사용 수명을 장시간으로 할 수 있다. 은 첨착량 0.14 %인 은 첨착 대나무 활성탄을 사용하여 KS M 0146 항균 기능 제품의 항균력 시험 방법 중 진탕 플라스크법에 의하여 실험한 결과 대장균과 황색포도상 구균에 대한 항균성을 확인하였다. The silver impregnated bamboo activated carbon impregnated with silver on bamboo activated carbon can sterilize harmful microorganisms adsorbed inside the activated carbon when used as a liquid filter medium due to the antibacterial effect of silver, so that the useful life of the filter medium can be extended. The antimicrobial activity of E. coli and Staphylococcus aureus was confirmed by the shaking flask method in the antimicrobial activity test method of KS M 0146 antimicrobial function product using silver impregnated bamboo activated carbon with 0.14% silver impregnation.

일반 야자각활성탄에 비하여 중간세공이 많으므로 은의 내세척력이 우수하여 장시간동안에 항균성을 발휘 할 수 있다.Compared with general coconut shell activated carbon, there are many intermediate pores, so silver has excellent washing resistance and can exhibit antibacterial activity for a long time.

기상의 흡착제로 사용시에도 유해가스 포집능력이 우수한 특성을 나타낸다.When used as an adsorbent in the gas phase, it shows excellent characteristics of capturing harmful gases.

Claims (1)

체가름 공정에서 활성탄 최종 제품 용도에 맞는 입자 크기를 가진 원료 대나무 활성탄을 선별하는 단계; Selecting raw bamboo activated carbon having a particle size suitable for use of the activated carbon end product in a sieving process; 상기 단계에서 선별된 대나무 활성탄을 대나무활성탄 투입 양의 0.001% 이상의 질산은이 용해된 질산은 수용액이나, 대나무활성탄 투입 양의 0.001% 이상의 금속 은과 질산 수용액을 가열 교반 용해 시켜 제조한 질산은 수용액이 담겨 있는 침적조에서 상온에서 2시간 이상 침적하는 단계; The silver nitrate solution in which the bamboo activated carbon selected in the above step is dissolved in silver nitrate solution containing 0.001% or more of silver nitrate in the amount of bamboo activated carbon, or by heating and stirring the metal silver and nitric acid solution in 0.001% or more of the amount of bamboo activated carbon. Depositing at least 2 hours at room temperature in a red tide; 상기 침적이 완료된 후 생성된 은 첨착 대나무 활성탄을 필터여과기나 원심여과기 등의 여과기를 이용한 여과공정을 통하여 수용액을 분리 시킨 후 4∼5회 세척수로 세척하는 단계; 및Separating the aqueous solution through a filtration process using a filter such as a filter filter or a centrifugal filter of the silver-impregnated bamboo activated carbon produced after the deposition is completed, and then washing with 4 to 5 wash water; And 상기 세척이 완료 된 후 100~200 ℃의 온도에서 24시간 건조 후 다시 130∼150℃ 온도에서 24시간 건조하여 중간세공이 발달한 대나무 활성탄에 은 함유량이 활성탄 무게 기준 0.001 % 이상 함유된 항균성과 내세척력이 우수한 첨착 대나무 활성탄을 제조하는 단계로 이루어진 것을 특징으로 하는 은 첨착 대나무 활성탄의 제조방법.After the washing is completed, the drying is performed for 24 hours at a temperature of 100 ~ 200 ℃ and then again for 24 hours at a temperature of 130 ~ 150 ℃ by the development of mesoporous bamboo activated carbon containing silver content of 0.001% or more based on the weight of activated carbon A method for producing silver-impregnated bamboo activated carbon, comprising the steps of preparing impregnated bamboo activated carbon having excellent washing power.
KR1020070002071A 2007-01-08 2007-01-08 Method for preparing silver impregnated bamboo activated carbon KR20080065102A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101481579B1 (en) * 2013-03-11 2015-01-13 원폴리 주식회사 Anti Bacteria Plastic Pellet Comprising Bamboo Charcoal and Method Thereof
KR101577950B1 (en) * 2015-09-04 2015-12-16 신수연 Electromagnetic wave blocker manufacturing method using the nano-carbon and Otoeku composition
CN112495376A (en) * 2020-11-10 2021-03-16 珠海格力电器股份有限公司 Silver-activated carbon composite material and preparation method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101481579B1 (en) * 2013-03-11 2015-01-13 원폴리 주식회사 Anti Bacteria Plastic Pellet Comprising Bamboo Charcoal and Method Thereof
KR101577950B1 (en) * 2015-09-04 2015-12-16 신수연 Electromagnetic wave blocker manufacturing method using the nano-carbon and Otoeku composition
CN112495376A (en) * 2020-11-10 2021-03-16 珠海格力电器股份有限公司 Silver-activated carbon composite material and preparation method thereof

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