• Title/Summary/Keyword: VOC emission

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Trends and Control Technologies of Volatile Organic Compound (국내의 휘발성유기화합물(VOC) 현황 및 관리기술)

  • Kim, Jo-Chun
    • Journal of Korean Society for Atmospheric Environment
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    • v.22 no.6
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    • pp.743-757
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    • 2006
  • Volatile organic compound (VOC) has been well-known to Korea since the end of 1990's however, it has not been well documented until now. In this study, present ambient VOC levels, VOC emission sources, and VOC control technologies were reviewed and discussed. In addition, VOC management strategies to cut down ozone concentrations were suggested based on the present VOC database. For anthropogenic VOC reduction, VOC emitted from painting processes and automobiles should be controlled in the first place in large cities such as Seoul, Daegu, and Incheon. For natural VOC management, low emission trees need to be planted in those cities. It is also very significant to keep updating present and future VOC emission inventories for efficient VOC control strategies. As a conclusion, more systematic VOC control road-map based on BACT (best available control technology) needs to be made up. and more economical and efficient VOC control techniques have to be developed under strong national support in order to lower toxic VOC and photochemical oxidant levels.

The Composition and Emission Characteristics of VOCs from Major Waste Landfill Sites in Korea (전국 주요 쓰레기매립장 지역에 대한 VOC 성분의 조성과 배출특성에 대한 연구)

  • Kim, Ki-Hyun;Choi, Ye-Jin;SunWoo, Young
    • Journal of Environmental Policy
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    • v.4 no.1
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    • pp.69-91
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    • 2005
  • In order to accurately evaluate the distribution and emission characteristics of volatile organic compounds(VOCs) produced in the landfill environment, we conducted a series of field campaign to measure VOC emissions from a total of eight landfill sites located all across the Korean Peninsula. During the field measurements made from Sept. 2000 to Dec. 2004, we investigated VOC emission characteristics from 1 large scale, 5 mid scale, and 2 small scale landfill sites. The results from our 4-years study is used to provide valuable information for the management of landfill facilities in Korea. If annual emission rates of VOC are compared in terms of toluene, the magnitude of its emission differed between the closed and active landfills. Whereas closed landfills show emission rates from a few tens to 500g/yr, those of active ones were recorded as 1,000 to 40,000g/yr.

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Studies of $VOC_s$ Emission Rate Calculation in the Kwang-ju Area (광주지역의 $VOC_s$ 배출량산정에 관한 연구)

  • 이영재;신대윤
    • Journal of Environmental Health Sciences
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    • v.26 no.3
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    • pp.103-110
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    • 2000
  • This study was conducted from January to December in Kwang-ju city, 1999. Calculated methods were studied by emission factors in each industrial species. The results was that total emission rate of VOC was calculated at a mount of 12305 ton/year as coating(49.4) > vehicles(27.4) > gasoline vapors(6.1) > petroleum refineries(5.6) > graphic arts(4.4) > road covering(4.1) > dry cleang(3.0%) respectively. In vehicles emission rate, passenger car and taxi were about 2,700 ton/yr(60%) of total vehicle emission(3,300 ton/yr). The amount of building emission rate was about 1,900 ton/yr(30%) of total coating emission 6,083 ton/yr.

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Estimation of the Emission form Passenger Car Considering Cold Start and Evaporative VOC Emission in the Capital Area (수도권지역 승용차에 의한 Cold Start와 Evaporative VOC를 고려한 배출량 추정)

  • 장영기;최상진;홍영실
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 2003.05b
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    • pp.157-158
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    • 2003
  • 급증하는 자동차 수요로 인해 발생되는 배출량 증가는 자동차 운행의 특성상 대도시 대기오염의 주원인으로 작용하고 있다. 자동차 배출오염물질의 배출량 추정 및 관리에 있어 연간 배출량 뿐만 아니라 월별 기온변화에 따른 배출량의 시간분포 또한 고려되어야 한다. 본 연구에서는 Hot emission에 부가되는 Cold start emission과 Evaporative VOC emission의 산정에 있어서 차종/차령에 대해서 월별 배출량을 추정하여 보았다. (중략)

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Evaluating Vehicle Emission Reduction (CO, VOC and NOx) Using Real-time Traffic Information (실시간교통정보 이용에 따른 차량의 CO, VOC, NOx 저감효과 평가)

  • Kim, Jun-Hyung;Um, Jung-Sup
    • Journal of Environmental Impact Assessment
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    • v.20 no.2
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    • pp.217-226
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    • 2011
  • This paper was inspired by the fact that Real-time Traffic Information Service could play a key role in reducing incomplete combustion time remarkably since it can provide traffic jam information in real-time basis. Emission characteristics of experimental engines were studied with variable travel distances and speed of car in terms of traffic information provided. 12 Km distance road of Susung district in Daegu is taken as an experimental area to examine this new approach. The emission was tested while the driving was done at 8 AM, 3 PM, 6 PM which represents various traffic conditions. The reduced emission has been measured for a travel distance running at different loads (conventional shortest route and Real-time Traffic Information) and various loads (CO, VOC and NOx) are all inventoried and calculated in terms of existing emission factors. The emission has been shown to reduce linearly with travel distance : carbon monoxide (20.56%), VOC (29.21%), NOx(8.86%).

Development of Simple Test Method using VOC Analyzer to Measure Volatile Organic Compounds Emission for Particleboards (VOC Analyzer를 이용한 파티클보드로부터 방산되는 휘발성유기화합물의 간이 측정방법 개발)

  • An, Jae-Yoon;Kim, Sumin;Kim, Jin-A;Kim, Hyun-Joong;Mun, Suck-Joong
    • Journal of the Korean Wood Science and Technology
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    • v.34 no.4
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    • pp.22-30
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    • 2006
  • The volatile organic compound (VOC) Analyzer is a portable device to measure the four main aromatic hydrocarbon gases: toluene, ethylbenzene, xylene and styrene. With the VOC Analyzer, a semiconductor gas sensor eliminates the need for the carrier gas which is required for conventional gas chromatographs. In addition, since the semiconductor gas sensor is supersensitive to gas components, it is not necessary to use a conventional gas concentrator or other complicated equipment. Compared with other measurement methods, the VOC analyzer is useful for measuring toluene, ethylbenzene, xylene and styrene in wood-based panel because of its ease in obtaining field results and repeating the test. The VOC Analyzer primarily measures four VOC in the air. In this study, we designed a test method of VOC measurement for particle board. A specimen was sealed in 3L polyester bag, after 96hours we could measure maximum VOC emission level that is a stabilized VOC Value. For easy, fast and economic testing of TVOC emission from wood-based panel, we developed the test method with the VOC Analyzer. The VOC Analyzer is expected to gain widespread use in the manufacturing field where a quick and easy test for VOC emission from wood-based panel is required. Furthermore, the VOC Analyzer promises to become an easier, faster and more economic technique than the currently used standard methods.

Test Method Using VOC Analyzer to Measure VOC Emission of Paints for Wood-based Panel (VOC Analyzer를 이용한 목재용 도료의 휘발성유기화합물의 간이측정)

  • Eom, Young Geun;Kim, Ki-Wook;An, Jae-Yun;Kim, Hyun-Joong;Moon, Suck-Joong
    • Journal of the Korean Wood Science and Technology
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    • v.35 no.6
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    • pp.65-72
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    • 2007
  • The VOC (volatile organic compound) analyzer is devised to measure the four main aromatic hydrocarbon gases: toluene, ethylbenzene, xylene and styfene. It is not affected by ambient temperature and humidity. In addition, standby and measuring time of VOC Analyzer is a short as below 30 min and 8 min, respectively. Since the semiconductor gas sensor is supersensitive to gas components, it is not necessary to use a conventional gas concentrator or other complicated equipment. In this study, VOC emission behavior from 4 types paints (lacquer, urethane vanish, water-base paint, enamel paint) for wood-based panel was investigated using VOC Analyzer. After a specimen was spreaded on aluminum foil ($6.32{\times}6.32cm$) in $3{\ell}$ polyester bag, after 24 hours we could measure maximum VOC emission level that is a stabilized VOC value. Xylene of VOCs was high emitted from lacquer, urethane vanish and water-based paint, and TVOC (Toluene + Ethylbenzene + Xylene + Styrene) of lacquer was the highest emission concentration than another.

Mathematical Modeling and Analysis on the Behavior of VOC in an Indoor Environment (휘발성 유기화합물의 거동특성 예측을 위한 수학적 모델링 및 실내 환기특성 연구)

  • 이승철;최청렬;김창녕
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.13 no.7
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    • pp.627-636
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    • 2001
  • This paper presents a numerical analysis of the emission process of volatile organic compound(VOC) from building material and its diffusion in a room. A polypropylene styrene-butadiene rubber(SBR) floor plate is chosen as the emission source of VOC. This study investigates spatial concentration distributions and time history of room-averaged VOC concentration for both with and without flushing. The results of this study show that for calculation based on ten-days period the room averaged VOC concentrations with and without flushing are quite different. the results thus suggest the need of flushing for new buildings.

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Emission Characteristics of VOC due to Major Industrial Activities in the Ban Wall Industrial Complex (안산시 반월공단을 중심으로 한 주요 배출시설의 업종 및 배출시설별 VOC의 배출특성)

  • Im, M.S.;Kim, K.H.;Choi, Y.J.;Jeon, E.C.
    • Journal of Korean Society for Atmospheric Environment
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    • v.22 no.3
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    • pp.325-336
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    • 2006
  • The presence of volatile organic compounds (VOC), produced and released from both anthropogenic and natural sources, can accelerate the degradation of air quality in the surrounding area. In this study, we investigated the emission concentrations of VOC based on a total of 115 sample analysis made from 47 companies (representing 17 types of industry) at the Ban Wall industrial complex (Jun. 2004 to Jan. 2005). Through a statistical analysis of these measurement data, we inspected the emission characteristics of VOC in relation with industrial type and processing unit. When these data were compared each other, toluene was found to record the highest value of 423 ppb followed by ethylbenzene (68.3 ppb), m, p-xylene (43.6 ppb), o-xylene (27.2 ppb), styrene (23.9 ppb), and benzene (16.4 pub). In addition, by converting these VOC concentration data into malodor intensity, we attempted to account for their distribution patterns in terms of relative contribution to the malodor formation. The results of odor intensity conversion generally indicated that the odor intensities of individual VOC do not exceed the degree of 1. When our VOC results were compared against other odorous compounds measured concurrently, the results were highly contrasting each other. Despite relative insignificance as odorous compounds, these VOCs are generally found ubiquitously and in abundant quantities in this strong source area.

Changes of VOCs Emission on Pine (Pinus Rigida) Board by Finishing with Different Coating Types (도장처리에 따른 소나무 판재의 휘발성유기화합물 방출특성 변화)

  • Park, Sang-Bum;Lee, Min;Lee, Sang-Min;Kang, Yeong-Seok
    • Journal of the Korea Furniture Society
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    • v.26 no.2
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    • pp.122-129
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    • 2015
  • In previous study, VOC emission characteristics of coating materials for wood finishing were conducted and results showed that eco-friendly products has about 15~46% lower TVOC emission than typical products. In this study, lower TVOC emitted coating materials were applied on pine and then changes of VOC emission characteristics from pine with treatments were determined. Non-treated pine emitted $604.7{\mu}g/m^2h$ of TVOC that contained 66% of NVOC ($399.7{\mu}g/m^2h$). However, $V_2$ finished pine showed no NVOC emission rather than AVOC emission that consisted of Toluene, Ethylbenzene, m,p-Xylene, o-Xylene, 1,2,4- Trimethylbenzene. All coating materials inhibited ${\alpha}$-Pinene emission which originally from pine, but waterborne stain ($W_1$ and $W_3$) showed lower disruption of that emission. Moreover, $W_3$/wood showed higher NVOC emission such as ${\alpha}$-Terpinol, Terpinen-4-ol which are known as antioxidant substrates. Based on results, VOC emission characteristic of pine was significantly affected by coating materials with negatively in terms of ${\alpha}$-Pinene emission or positively in terms of NVOC emission. Therefore, coating material is important factor for indoor air quality when it would apply on wood products. For the future study, VOC emission characteristic of coated wood will be conducted continuously.