• Title/Summary/Keyword: Odorous and Volatile Organic Compounds

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Simultaneous Analyses for Trace Multi-Odorous and Volatile Organic Compounds in Gas using a Triple-bed Adsorbent Tube (Triple-bed Adsorbent Tube를 이용한 가스상 극미량 복합 악취 및 휘발성 유기화합물의 동시 분석)

  • Seo, Yong Soo;Lee, Jea Keun
    • Korean Chemical Engineering Research
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    • v.48 no.2
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    • pp.244-252
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    • 2010
  • The objective of this study is to assess feasibility of simultaneous analysis for trace multi-components odorous and volatile organic compounds using a Triple-bed adsorbent tube with a thermal desorber and GC-MS. Triple-bed adsorbent tube is 3 bed packed Tenax-TA with small amount of Carbopack B and Carbosieve SIII in order of adsorption strength in a tube. The operating conditions of GC-MS was possibly able to and effectively detect high volatile and low molecular weight compounds at the mass range of 20~350 m/z using a below impurity 1ppm of Helium carrier gas, of which quantitatively analyzed by target ion extracts. According to the experiment, $C_1{\sim}C_5$ of 14 components; sulfur containing compounds(2), ketones(2), alcohols(4) and aldehydes(6) were simultaneously analyzed with recoveries of 99%, and good repeatability and linearity. High volatile and low molecular weight compounds such as methyl alcohol and acetaldehyde can be safely quantified with high recovery at a condition of 50mL/min of flow rate, below 2L of adsorption volume, and 45% of relative humidity. Target ion extract can also simultaneously quantify multicomponents with odorous and volatile organic compounds in an occasion of piled up two peaks.

Characterization of Odorant Compounds from Mechanical Aerated Pile Composting and Static Aerated Pile Composting

  • Kumari, Priyanka;Lee, Joonhee;Choi, Hong-Lim
    • Asian-Australasian Journal of Animal Sciences
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    • v.29 no.4
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    • pp.594-598
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    • 2016
  • We studied airborne contaminants (airborne particulates and odorous compounds) emitted from compost facilities in South Korea. There are primarily two different types of composting systems operating in Korean farms, namely mechanical aerated pile composting (MAPC) and aerated static pile composting (SAPC). In this study, we analyzed various particulate matters (PM10, PM7, PM2.5, PM1, and total suspended particles), volatile organic compounds and ammonia, and correlated these airborne contaminants with microclimatic parameters, i.e., temperature and relative humidity. Most of the analyzed airborne particulates (PM7, PM2.5, and PM1) were detected in high concentration at SAPC facilities compered to MAPC; however these differences were statistically non-significant. Similarly, most of the odorants did not vary significantly between MAPC and SAPC facilities, except for dimethyl sulfide (DMS) and skatole. DMS concentrations were significantly higher in MAPC facilities, whereas skatole concentrations were significantly higher in SAPC facilities. The microclimate variables also did not vary significantly between MAPC and SAPC facilities, and did not correlate significantly with most of the airborne particles and odorous compounds, suggesting that microclimate variables did not influence their emission from compost facilities. These findings provide insight into the airborne contaminants that are emitted from compost facilities and the two different types of composting agitation systems.

The Effect of the Addition Levels of Odor Reducing Contents on the Concentration of Volatile Fatty Acid and Volatile Organic Compound in Pig Slurry (양돈 슬러리에 첨가된 악취저감물질 수준별 휘발성 지방산과 휘발성 유기화합물 농도 비교)

  • Hwang, Ok-Hwa;Yang, Seung-Hak;Jeon, Jung-Hwan;Kim, Jung-Kon;Choi, Dong-Yun;Cho, Sung-Back
    • Journal of Animal Environmental Science
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    • v.19 no.2
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    • pp.101-108
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    • 2013
  • This study was to investigate the effect of addition levels of odor reducing contents on reducing the concentration of odorous compounds. Slurry treatments included three levels mixture of horseradish powder (HP), mushroom waste (MW) and probiotics powder (PP), and non-treatment control (n=4 each group). Levels of odorous compounds were measured from the liquid slurry incubated in room temperature ($20{\sim}25^{\circ}C$) for 2 wk in chamber whose structure is similar to slurry pit. Concentration of phenols and indoles was lower (p<0.05) in level 1, which was mixed HP 0.01%, MW 0.4% and PP 0.004% (98.69, 1.87 ppm) compared to control. Short chain fatty acid (SCFA) and branched chain fatty acid (BCFA) was lowest (p<0.05) level 1 (6,557, 1675 ppm). Taken together, lower level are effective in reducing odorous compounds in pig slurry.

Odorous Pollutant Concentration Levels in the Ban-Wall Industrial Area and Its Surrounding Regions (산업단지 및 주거지역에 대한 환경대기 중 주요 악취물질의 농도특성에 관한 연구 - 안산시 반월공단을 중심으로 -)

  • Choi, Ye-Jin;Kim, Ki-Hyun;Jeon, Eui-Chan
    • Journal of the Korean earth science society
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    • v.27 no.2
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    • pp.209-220
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    • 2006
  • In this study, the distribution patterns of major odorous compounds in ambient air were investigated in the areas surrounding the Ban-Wall industrial complex of Ansan, Korea (Aug. 2004 to Sep. 2005). The results indicated the environmental significance of several major odorous compounds which include carbonyl compounds, reduced sulfur compounds (RSC), and volatile organic compounds (VOC). When the results were compared on a diurnal basis, the afternoon time concentration of most odorous compounds were notably higher than their morning time counterparts. It also indicated that the odor concentrations differed greatly, in terms of spatial grouping scheme of data sets, such as between industrial area and non-industrial area. The comparison of spatial patterns indicated that the concentrations of most of the compounds at the industrial area were maintained at high concentration levels, compared to the surrounding areas. The overall results of this study thus suggest that the distribution of odorous compounds in a large industrial complex can exhibit a unique pattern of their own.

Effects of Horseradish, Spent Mushroom Compost and Almond Hull on Odorous Compound Concentration of Pig Slurry for Recycling in Grassland (슬러리 환경개선물질이 초지환원용 양돈 슬러리의 악취물질 농도에 미치는 효과)

  • Cho, Sung Back;Hwang, Ok Hwa;Lee, Jun Yeop;Kim, Jong Kon;Choi, Dong Yoon;Park, Sung Kwon
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.33 no.4
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    • pp.252-256
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    • 2013
  • This study investigated the effect of slurry additives on reducing the concentration of odorous compounds. Slurry treatments included control, horseradish, spent mushroom, and almond hull (n = 4 each group). Odorous compounds including volatile organic compounds (VOCs phenols and indoles) and volatile fatty acids (VFAs short chain FA, SCFA, and branched chain FA, BCFA) were analyzed. Pigs of 85~120 kg body weight were fed diets formulated to meet the Korean Feeding Standard (2012) and their excretion was sampled from slurry pits. VOCs decreased (p<0.05) in horseradish, spent mushroom, and almond hull, compared to the control. SCFA was lower (p<0.05) in the horseradish group and BCFA was lower (p<0.05) in all three treatment groups compared to the control. Taken together, the tested additives are effective in reducing odorous compounds in pig slurry, indicating that the use of spent mushroom and almond hull can not only recycle the agri-byproduct but also reduce the impact of odors on surrounding communities.

Measurement of odor compounds from odorous emissions source of Industrial Complex (산업단지에서 배출되는 악취원인물질의 규명)

  • An Sang-Young;Choi Sung-Woo
    • Journal of Environmental Science International
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    • v.14 no.1
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    • pp.81-89
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    • 2005
  • As a typical example of simultaneous analysis of the odorous compounds, the volatile organic compounds from inventory sources in Seongseo industrial area were concentrated and analyzed with thermal desorber/GC/MSD, and major malodorous compounds were estimated. Odor intensity and odor concentration was analyzed simultaneously During a period from November in 2002 to December in 2003, this study was conducted to evaluate malodor emission characterization in major treatment facilities. The major components were Dimethyl sulfide, Dimethyl disulfide, Methyl mercaptane, Ammonia, Benzene, Toluene, m,p-xylene, o-xylene, Styrene, 1,2,4­T.M.B and 1,3,5-T.M.B. Among the six major inventory sources, the odor unit concentration of Night-soil disposal facilities was the highest, $669\~2344\;ou/m^{3}.$

The Comparison of Concentration of Volatile Fatty Acids, Ammonia, and Volatile Organic Compounds in Pig Slurry (돈사 종류별 슬러리의 악취물질 농도 비교)

  • Cho, Sung Back;Yang, Seung Hak;Lee, Jun Yeop;Kim, Jung Kon;Jeon, Jung Hwan;Han, Man Hee;Han, Duck Woo;Jeong, Gwang Hwa;Kwag, Jeong Hoon;Choi, Dong Yun;Hwang, Ok Hwa
    • Journal of Animal Environmental Science
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    • v.19 no.1
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    • pp.25-32
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    • 2013
  • This study was performed to analyse the concentration of odorous compounds in the piggeries. Piggeries for different types of pigs include piglets, growing pigs, gestating and lactating sows. Slurry from these piggeries was sampled every month for chemical analysis. Short chain fatty acid (SCFA) was 9,862 ppm (piglet), 8,410 ppm (growing pigs), 6,791 ppm (fattening pigs), 3,508 ppm (lactating sows) and 1,687 ppm (gestating sows). Branched chain fatty acid (BCFA) was 1,634 ppm (piglet), 1,206 ppm (growing pigs), 868 ppm (fattening pigs), 493 ppm (lactating sows) and 185 ppm (gestating sows). Concentration of phenols was 209 ppm (piglet), 166 ppm (growing pigs), 127 ppm (fattening pigs), 85 ppm (lactating sows) and 36 ppm (gestating sows). Indoles was 18 ppm (piglet), 14 ppm (growing pigs), 8 ppm (fattening pigs), 6 ppm (lactating sows) and 4 ppm (gestating sows). Altogether, concentration of odorous compounds was decreased as pigs got aged.

Effect of Fermentable Carbohydrate in Diet on the Concentration of Volatile Fatty Acid and Volatile Organic Compound in Pig Slurry (발효탄수화물 첨가 사료가 양돈 슬러리의 휘발성 지방산과 휘발성 유기화합물 농도에 미치는 효과)

  • Cho, Sung-Back;Yang, Seung-Hak;Lee, Jun-Yeop;Kwag, Jeong-Hoon;Choi, Dong-Yun;Hwang, Ok-Hwa
    • Journal of Animal Environmental Science
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    • v.19 no.2
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    • pp.89-94
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    • 2013
  • This study was performed to investigate the effect of beet plup and IRG (Italian ryegrass) dry powder in fattening pig diet on reducing concentration of odorous compounds in the pig slurry. Fifty fattening boars [(Landrace ${\times}$ Yorkshire) ${\times}$ Duroc] were randomly assigned to one of 3 treatments (control, beet plup 5%, and IRG 5%). Pigs (BW 50~110 kg) were fed diets formulated to meet the Korean Feeding Standard (2012) and their excretion was collected from the slurry pits. Short chain fatty acid (SCFA) and branched chain fatty acid (BCFA) were higher in beet plup (31,786, 3,985 ppm) and IRG (32,755, 4,261 ppm) treatments, which was not different among treatments (p>0.05), compared to control (p<0.05). Concentrations of phenols and indoles were highest in beet plup (183.83, 168.59 ppm) and IRG (9.32, 8.92 ppm) treatments. Altogether, addition level of two contents was not appropriate to decrease concentration of odorous compounds.

Evaluation of Deodorization Capabilities, Morphologies, and Thermal Stabilities of Baking Soda, Charcoal, Coffee, and Green Tea for Kimchi Packaging Application

  • Jeong, Suyeon;Yoo, Seung Ran
    • KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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    • v.26 no.1
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    • pp.1-9
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    • 2020
  • We evaluated the applicability of baking soda, charco'al, coffee, and green tea as a natural deodorant in Kimchi packaging. Moreover, to evaluate the potential usage of these deodorants in packaging materials and confirm their applicability in high-temperature melt-extrusion processing, the thermal stabilities of the deodorants were investigated, and heat-treated deodorants were evaluated in terms of the deodorizing function compared with non-treated deodorants. Aroma patterns were decreased after deodorizing treatment with all-natural deodorants. Dimethyl disulfide, methyl trisulfide, and diallyl disulfide, the most significant odorous Volatile organic compounds (VOCs) of Kimchi, decreased after treatment with the deodorants. In particular, baking soda and charcoal showed the highest efficiency in removing odorous compounds and VOCs from Kimchi, even after high-temperature processing. The acetic acid removal rates for both baking soda and charcoal were 99.9±0.0%. The heating process increases the deodorizing effects of baking soda. Sensory evaluation results showed that there is a significant increase (p < 0.05) in the overall preference for Kimchi samples packaged with charcoal and baking soda. This study provides useful information for the deodorization effects of natural deodorants for Kimchi smell and their applicability for packaging materials.

Paint booth volatile organic compounds emissions in an urban auto-repair center

  • Cho, Minkyu;Kim, Ki-Hyun;Szulejko, Jan E.;Dutta, Tanushree;Jo, Sang-Hee;Lee, Min-Hee;Lee, Sang-hun
    • Analytical Science and Technology
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    • v.30 no.6
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    • pp.329-337
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    • 2017
  • A major concern regarding most auto-repair shops in residential areas is the emission of odorous volatile organic compounds (VOCs) into the local atmosphere, especially during painting operations. VOCs contribute to poor local air quality and are responsible for the perceived odor and discomfort experienced by local residents. Sixteen major VOCs (6 aromatic hydrocarbons and 10 aliphatic carbonyl compounds) were selected as potential target compounds. The site was an auto-repair shop located in a central region of Seoul, South Korea, where the air quality of the site has been a subject of residents' complaints. The sampling points were as follows: 1) in the painting booth with new (NB) or old (OB) removal system, (2) in the exhaust duct after new (ND) or old (OD) odor removal filter, and (3) 2 m below the discharge vent (4 m above the ground) (outdoor air, OA). Each sample was coded: (1) before painting (BP), (2) during painting (DP), and (3) after painting (AP). The toluene level in the duct with the new removal filter during painting (ND-DP) was 1.5 ppm (v/v), while it was 3.8 ppm (v/v) in the right duct with an old removal filter during painting (OD-DP). Accordingly, the effect of filter replacement was reflected by differences in VOC levels. Therefore, accurate monitoring of odorous VOCs is an important step to reduce odor nuisance from local sources.