• 제목/요약/키워드: Charcoal filter

검색결과 20건 처리시간 0.028초

활성탄 첨가에 따른 담배용 필터지의 이화학적 특성 (Physical and Chemical Properties of Charcoal Added Paper for Cigarette Filter)

  • 이문용;전양;김영호;이정일
    • 펄프종이기술
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    • 제31권4호
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    • pp.76-83
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    • 1999
  • This study was carried to investigate optimum conditions of charcoal added paper in making cigarette filter for the removal of smoke contents of cigarettes. We investigated the physical properties of charcoal added paper according to the ratio of pulps, the amounts of characoal , the weight of sheets and crimping conditions in dry method, and then analyzed the smoke contents of cigarettes. The results obtained were as follows. 1. Sw-BKP was higher than Hw-BKP in methylene blue absorption by UV test. 2. Charcoal had an effect on stiffness for decreasing factor greatly , while the addition amounts of Sw-BKP and high weigth of sheets increased it, and the interaction of weight of sheets and charcoal was higher than other factors. 3. Tear index decreased by charcoal addition greatly, on the other hand high weight of sheets and Sw-BKP/Hw-BKP ratio increased ter, and the interaction of pulps and chacoal acted on major factors. 4. We estimated crimp index with sensory evaluation , and charcoal hand an effect on decreasing factor in crimping greatly, while the interaction of weight of sheets and pulp ratio was higher than others. 5. In the case of charcoal added paper filter, tar removal efficiency of smoke contents was higher but about 6% than cigarette filter. Especially vapour phase(aldehyde) in smoke contents was removed greatly.

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실험동물 사육실에서의 Exhaust Filter Unit의 악취제거성능에 관한 실험적 연구 (An Experimental Study on the Deodorization Performance of Exhaust Filter Unit in a Laboratory Animal Breeding Facility)

  • 권순욱;홍진관
    • 설비공학논문집
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    • 제25권4호
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    • pp.194-200
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    • 2013
  • In this study, an exhaust filter unit for removing bad smells is designed and manufactured to understand the characteristics, damages, and effects on humans and animals of bad smell substances in laboratory animal breeding facilities. Using the exhaust filter unit, a deodorization performance test using ammonia gas, as a typical bad smell in an animal breeding room, was carried out for three types of activated and impregnated charcoal filters. The experimental results showed that the pressure loss of the HEPA and carbon filter was increased with flow rate and that the average deodorization performance for the case where an impregnated carbon filter was installed was a maximum value of between 93 and 96%, with various fractional flow rates ranging from 1,500 to $3,500m^3/h$ in a laboratory animal breeding room. The experimental results will also be used for the design and manufacture of a practical and efficient exhaust filter unit to cope with bad smell problems in animal breeding facilities.

한국산 Zeolite의 필터첨가제로서의 흡착효과에 관하여 (A Study on the Adsorption Effect of Korean zeolite "Clinoptilolite" as Cigarette Cavity Filter Additive.)

  • 양광규;송치현;김찬호
    • 한국연초학회지
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    • 제2권1호
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    • pp.8-16
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    • 1980
  • Zeolite의 일종인 clinoptilolite를 담배필터 첨가제로 활용하는 연구를 하였다. 입자크기 30 $\pm$ 5 A.S.T.M. mesh의 clinoptilolite와 charcoal 1 : 1 (V/V)로 혼합하여 삼중필터의 cavity부분에 충진했을 때, 1. Cellulose acetate필터에 비하여 nicotine 35%, T.P..M.22%를 감소시켰으며, 2. Gas phase중 n-amyl alcohol등 aliphatic compound와 furan등 cyclic compound를 cellulose acetate filter에 비하여 60$\pm$ 5%를 감소시켰다. 3. Charcoal의 removal efficiency는 40-50% clinoptilolite의 10-20%에 비하여 큰 값이였지만 charcoal은 분자량이 큰 aromatic compound의 removal efficiency가 50$\pm$5%로서 aliphatic compound의 removal efficiency 40: 5%보다 큰 값이였음에 비하여 clinoptilolite는 alcohol과 ketone계열의 분자갹이 작은 화합물의 removal efficiency가 15-20%로 cyclic compounds의 removal efficiency 10-15%에 비하여 보다 큰 값이었다. 이 두물질의 gas phase성분의 흡착기능은 상호 보완적임을 알 수 있었다.

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페로망간제조 분진에서 질산과 활성탄에 의한 망간의 침출 (The Extraction of Manganese from the Medium-Low Carbon Ferromanganese dust with Nitric acid and Charcoal)

  • 이계승;김형석;송영준;신강호;김윤채;조동성
    • 자원리싸이클링
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    • 제9권4호
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    • pp.44-49
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    • 2000
  • 중저타소페로망간을 제조하는 AOD공정의 bag filter에 포집된 분진은 약 63%의 Mn을 함유하며, XRD로 분석된 결정체는 Mn$_{3}O_{4}$이지만, 질산으로 Mn을 침출하면 MnO$_{2}$가 잔류되기 때문에 67%이하의 침출율을 나타낸다. 따라서 활성탄으로 환원배소한 후에 침출하는 방법과 침출시에 활성탄을 첨가하는 방법으로 침출율을 높이고자 하였따. 70$^{\circ}C$, 0.5N HNO$_{3}$ pilp density 7 g/l 의 액에 분진된 10%이상으로 활성탄을 첨가하면 90%이상의 Mn이 침출되었고, 5%의 활성탄을 혼합하여 750$^{\circ}C$에서 배소한 분진은 상온에서 6N HNO$_{3}$에 150 g/l을 첨가하였을 때에 99%이상의 Mn이 침출되었다.

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Brookhaven 醫學硏究用 原子爐에서의 氣體噴出物에 관한 硏究 (A Study on Gaseous Effluents from BMRR)

  • 황선태;박태순;하석호;최성숙
    • 한국대기환경학회지
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    • 제4권2호
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    • pp.1-10
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    • 1988
  • Brookhaven 의학연구용 원자로에서 방출되는 기체분출물에 관하여 연구 되었다. 모든 기체시료는 $\gamma$-선 분광계측에 의하여 분석되었다. 시료 중에 존재하는 것으로 확인된 핵종으로서, $^{82}Cl(T_{1/2}$ = 35.30 시간) 이 가장 뚜렷하였다. 그 외의 확인된 핵종은 $^{38}Cl(T_{1/2}$ = 37.24분), $^{41}Ar(T_{1/2}$ = 1.82시간), $^{106}Rh(T_{1/2}$ = 29.80묘), $^{133}Te(T_{1/2}$ = 12.45분)이었다. 3MW 원자로 출력에서 pre-filter bank를 통과한 기체분출물 중에서 $$^{41}Ar$의 농도는 2.436Bq/cc로 계산됨으로써 $^{41}Ar$의 방사능 방출율은 8.51 ${\times}10^9$Bq/MW - h로 산정되었다. filter bank의 방사능 원거효율(%)은 $^{38}Cl$의 경우 97.84%, $^{41}Ar$은 14.15%, ^{82}Br$은 98.70% 그리고 $^{106}Rh$은 98.81% 각각 산정되었다. 한편, charcoal trap과 millipore filter 에서 확인된 기타 핵종들로서 $^{24}Na$, $^{72}Ga$, $^{92}Sr$, $^{97}Zr$, $^{132}I$, $^{133}Te$, $^{141}Ce$, $^{153}Sm$$^{154}Pm$은 filter bank에 의해서 완전히 제거되었다.

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Design of the air purification system with On/Off fan control to reduce harmful air in nail shop

  • Minwoo Cheon
    • Journal of Platform Technology
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    • 제11권6호
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    • pp.28-33
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    • 2023
  • With the development of the beauty industry, the nail art industry is expanding, and through this, nail culture is becoming more popular. However, some products used in the nail art field may produce harmful substances, so great caution is required. In this paper, an air purification system was designed to reduce harmful air. The air purification system uses a harmful gas sensor to measure the level of pollution in the surrounding air and then turns the fan on/off to remove harmful gases and fine dust. Two types of filters and two fans can be driven and controlled respectively so that harmful gases are absorbed into the charcoal filter and fine dust is absorbed into the HEPA filter. In addition, filters, fans, and piping were appropriately placed to remove contaminated surrounding air as quickly as possible during nail procedures.

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파라쿼트로 발생한 폐 섬유화증에서 pulse therapy로 호전된 환자 1례 (A Case of Moderate Paraquat Intoxication with Pulse Therapy in the Subacute Stage of Pulmonary Fibrosis)

  • 홍기훈;정진희;어은경
    • 대한임상독성학회지
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    • 제6권2호
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    • pp.130-133
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    • 2008
  • In South Korea, attempted suicide by paraquat (PQ) intoxication is fairly common, and is lethal by pulmonary fibrosis and hypoxemia. However, the treatment of PQ poisoning is primarily supportive management. To increase the survival rate associated with PQ intoxication, many treatments have been developed. Here, we treated a case of PQ intoxication with steroid pulse therapy. A 23-year-old man was admitted to the hospital because of PQ intoxication. He drank two mouthfuls of Gramoxon (24% commercial paraquat). His vital signs were stable, but he had a throat infection, and navy blue urine in the sodium dithionite test. Standard treatment, including gastric lavage with activated charcoal was performed, and emergent hemoperfusion with a charcoal filter was initiated 11 h after PQ ingestion. Pharmacotherapy was initiated 18 h after PQ ingestion with the administration of 5 mg dexamethasone. On day 10, chest PA showed pulmonary fibrosis. Therefore, we initiated steroid pulse therapy, with 1g methylprednisolone in 100 mL of D5W administered over 1 h repeated daily for 3 days, and 1 g cyclophosphamide in 100 mL of D5W administered over 1 h daily for 2 days. On day 15, dexamethasone therapy was initiated. On day 30, pulmonary fibrosis was improved. Thus, if pulmonary fibrosis becomes exacerbated after dexamethasone therapy during the subacute stage, pulse therapy with methylprednisolone and cyclophosphamide could be helpful.

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판재형 활성탄을 이용한 라돈 저감 연구 (A Study of Radon Reduction using Panel-type Activated Carbon)

  • 최일홍;강상식;전제훈;양승우;박지군
    • 한국방사선학회논문지
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    • 제11권5호
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    • pp.297-302
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    • 2017
  • 최근 실내공기 중의 라돈기체의 농도를 저감하기 위하여 친환경 숯을 이용한 공기정화 필터 및 건축자재를 개발하기 위한 연구가 활발히 진행되고 있다. 본 연구에서는 종래의 입상 활성탄 필터에 비해 취급이 용이하고, 효율적으로 라돈을 흡착 및 제거할 수 있는 새로운 판재형 활성탄을 설계 및 제작하여 라돈 저감 성능을 평가하였다. 판재형 활성탄은 분말 활성탄과 폴리우레탄 폼을 일정한 비율로 혼합하고 믹싱 및 압착 공정을 통해 성형제품으로 제작하였으며, 다이아몬드 절삭을 통해 2 mm, 4 mm, 6 mm 두께로 각각 제작하였다. 제작된 활성탄 필터에 대한 물리적 특성을 분석하기 위해 비표면적과 휨 강도를 측정을 하였다. 또한, 실내 라돈기체의 저감성능을 평가하기 위해 3개의 아크릴 챔버를 이용하였으며, 일정한 공기유량에 대해 필터 통과 전과 후의 라돈 농도를 연속 측정하여 저감율을 평가하였다. 측정결과, 제작된 판재형 활성탄의 비표면적은 약 $1,008m^2/g$으로 종래의 활성탄과 유사한 값을 보였으며, 휨 파괴 하중은 435 N으로 석고보드보다 3배 이상 높은 강도를 가지는 것을 알 수 있었다. 끝으로, 실내 라돈기체의 저감은 활성탄의 두께가 증가함에 따라 저감효율이 증가하였으며, 6 mm 두께의 활성탄 필터에서 90 % 이상의 우수한 라돈제거율을 보였다. 이러한 결과로부터 본 연구에서 제작된 판재형 활성탄은 밀폐된 실내에서 라돈 기체의 농도를 감소시키기 위한 친환경 건축 재료 및 공기 정화 필터로 활용이 가능할 것으로 기대된다.