• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.295-296
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• 2001

동물 축사, 폐수 및 하수처리장, 피혁공장, 생선처리시설 등에서 주로 발생하는 암모니아(NH$_3$) 및 트리메틸아민(($CH_3$)$_3$N)과 같은 악취 물질 제거에 대한 많은 연구가 진행되고 있다. 악취 물질에 대한 처리 기술에는 직접 산화법, 고온 연소법, 효소분해법, 흡착법, 촉매 산화법, 플라즈마 제거법 등과 같은 악취 물질을 분해 제거하는 방법과 단순히 악취를 은폐시키는 마스킹법이 있다. (중략)

• KSBB Journal
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• v.22 no.5
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• pp.336-340
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• 2007

Supercritical carbon dioxide was used to remove coffee odors. The odor removal efficiency was tested with coffee drink prepared by the espresso extraction method. Five typical odors in coffee were analyzed with GC and these odors in deodorized coffee were compared to those in control. Supercritical carbon dioxide extraction conditions were optimized as 350 bar and 70$^{\circ}C$ because the solvating power of supercritical fluid is depend on the density which is determined by temperature and pressure. A modified head space method was applied to collect coffee odors in coffee drink prepared by the espresso extraction method. Odors generated in coffee drink made with deodorized coffee powder were reduced by 73% in total mass of typical five coffee odors.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.652-654
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• 2009

퇴비화는 유기물질이 분해되는 조건에 따라 호기성 퇴비화(Aerobic composting)와 혐기성 퇴비화(Anaerobic composting)로 대별된다. 음식물쓰레기 퇴비화 시설의 주요공정은 선별시설, 혼합 및 발효시설, 불순물제거장치, 숙성시설, 악취제거시설로 구성된다. 본 과제에서는 이와 같이 음식폐기물 처리공정 등에 널리 사용되는 퇴비화 공정에서 발생하는 악취를 제거하기 위한 연구를 진행하였다. 본 연구에서는 다양한 형태의 탈취 공정을 비교 검토하였으며, 세라믹 담체를 사용한 생물학적 처리에 초점을 맞추어 연구를 진행하였다. 이를 위하여 퇴비화 온도에 따른 유기물의 변화와 NaCl의 농도변화를 측정하여 퇴비화 진행에 따른 성분 변화를 예측하였다.

• 한국생물공학회:학술대회논문집
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• 2000.11a
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• pp.163-166
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• 2000

Hydrogen sulfide, ammonia and benzene which are generated from natural leather industry were simultaneously removed using biofilter including benzene degrading microbial consortia and sulfur oxidizer Thiobacillus sp.IW. The removal efficiency of benzene was maintained 90% in average for single and mixed gas treatment and that of ammonia was 99%, whereas at of hydrogen sulfide was relatively lower 85%.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1998.11a
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• pp.73-76
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• 1998

악취 물질은 주로 피혁공장, 화학공장, 유지공장, 슬러지처리장 등에서 발생하며 작업장 내의 근로자뿐만 아니라 인근 지역주민들에게 정신적인 불쾌감을 주는 동시에 인체에 매우 유해한 물질들이다. 이들 악취물질중 유황화합물질로는 황화수소, 머켑탄류가 있으며 아주 적은 농도에서도 악취를 느낄 수 있고 자극이 매우 심하다. 특히, 황화수소와 메틸머켑탄은 거의 모든 악취의 주요 원인물질로서 작업현장 내에 혼합물질로 존재하며, 쾌적한 작업환경을 위해서는 이들의 처리가 반드시 필요하다. (중략)

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2001.11a
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• pp.409-410
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• 2001

악취 발생원은 하수ㆍ분뇨처리장, 매립지 등 각종 환경기초시설에서부터 석유화학단지, 각종 산업시설, 그리고 농촌의 축사에 이르기까지 우리 생활주변에 널리 분포되어 있다. 탈취시설은 일반적으로 분뇨처리장을 제외하고는 보편화되어 있지 않으며, 특히 일반 농촌 축사의 경우는 탈취 시설이 전무한 상태로서 축사에서 발생하는 악취로 인한 주민 민원 발생이 증가하고 있다. 특히 축분의 대사과정에서 주로 발생되는 악취인 암모니아는 강한 악취성분의 하나로 배설된 분뇨에서 미생물의 유기물 분해에 의해 암모늄이 생성되고, 생성된 암모늄은 암모니아 가스로 대기중으로 휘산되어 강한 악취를 발생시킨다.$^{1)}$ (중략)

• Journal of Korea Soil Environment Society
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• v.4 no.3
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• pp.45-56
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• 1999

A biofilter was established to remove the ammonia, which is representative nitrogen-contained malodorous gas. in a compost factory. Removal efficiency of ammonia and hydrogen sulfide also was investigated. A quantity of malodor gas produced in a compost factory was affected greatly by the weather. compost states and working condition of a fertilizing mixer, and the produced gas concentrations doubled by above various parameters. By operating a water scrubbing system for removing water-soluble malodorous gases effectively. we could improve the removal efficiency over three times. We investigated long-term stability of biofilter under continuous gas flow(SV=500h-1) for 100 days. The results showed 30 days of microbial retention time. After the days, deodorization efficiency of biofilter was kept steady state. and the removal efficiency was kept over 95% for ammonia and 97% for hydrogen so]fide. respectively. The electric consumption of the biofilter, which could treat malodorous gas of 100$\textrm{m}^3$/min, applied in the compost factory was evaluated about 80u0day and water consumption was 80~100$\ell$/day. These results concluded that the biofilter is a excellent deodorization technology as well as cost-effective for removing malodorous gas produced in a compost factory.

• Korean Journal of Microbiology
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• v.40 no.2
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• pp.127-132
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• 2004

We isolated 50 strains from sludge of wastewater treatment aeration tank using selective medium for Thio-bacillus sp. by membrane filtration method. They were identified as Thiobacillus neapolitanus (7), T. tepidarius (4), T. dientrificans (5), T. versutus (23), T. intermedius (2) and T. perometabolis (9). We selected Thiobacillus versutus strain KT51, which had the highest removal efficiency (100％) of hydrogen sulfide and the highest removal efficiency (85％) of dimethyl sulfide for 30 min in screen test. Also Thiobacillus versutus strain KT81 had the highest removal efficiency (26％) of dimethyl disulfide for 30 min in screen test. In applification of lab-scale reactor (closed-biological treatment) using Thiobacillus versutus strain KT51, results were 99.8％ (＜0.02 ppm) removal efficiency of hydrogen sulfide for 15 min.

• Journal of the Korean GEO-environmental Society
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• v.17 no.11
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• pp.35-43
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• 2016

In this study, by using a Effective Microorganisms Brewing Cycle, it confirmed the purification effect of pollutants that are adsorbed on the basins stench removal and retarding soil. On the basis of on-site application test, a soil decontamination system will be suggested. Using a Effective Microorganisms Brewing Cycle, the odor concentration is reduced 2.5 times than that of natural purification treatment method. It was measured and found that the quality of the pore water discharged from the soil is improved. In addition, it was found that a composite of copper and lead with the fermentation microorganisms adsorbed on soil particles from the surface of the stirred experiments lagoon mixed soil is reduced to 65% and 66%, respectively, The TPH organic component was confirmed that the reduction effect of 85%. Restoration of reservoir contaminated soils using the effective microorganism brewing cycle needs to be more developed and implemented as a long-term purification system. This study may be a good reference of developing more complete microorganism brewing system which will efficiently reduce the odor and soil contamination based on optimal stirring and mixing ratio of the compound solutions and contaminated soils in reservoir.

• Applied Chemistry for Engineering
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• v.20 no.2
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• pp.218-222
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• 2009

As we look into the related technologies at home and abroad, the odor and dust removal technologies did not make us satisfied because its removal method is not appropriate and its economical efficiency was low. If bad odor and dust were generated simultaneously, we should install two removal factories separately, and it made a big problem. Consequently, we investigated to obtain the related basic information for a new hybrid bag filter system which can remove both odor and dust at the same time, using bag filter with ACF (dual filter type).