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고재철,안범종,김승호 三陟大學校 産業科學技術硏究院 2005 産業科學技術硏究論文集 Vol.10 No.-
This study was to manufactured the rectangular and cylindrical module types in order to improve the performance of the Metal Fuel Cell. Power densities of two modules were estimated at electrolyte varied from 1 to 10 M-KOH and the shapes of metal fuels were pellet and plate. The performance of the pellet shape with big surface was a higher value about 10 percents than plate shape when the current was 100 mA. As the results of life test with 75 mV in the rectangular module at the 7 M-KOH, which were operated at 1.09 V for twenty hours.
질소산화물 제거를 위한 V₂O_5/TiO₂촉매 코팅된 다공성 실리카 필터의 제조 및 특성
한요섭,고재철,박영구,김승호,박재구 三陟大學校 2005 論文集 Vol.38 No.-
The prepared porous support from silica coated with TiO₂ and V₂O_(5) catalysts were studied by selective catalytic reduction of NOx with NH₃ The effects of V₂O_(5) loading, reaction temperature, space velocity and filter-type(disk and sphere) on the characteristics of NOx reduction with NH₃ were mainly investigated. At space velocity 6000h^(-1), reaction temp rature 350℃, V₂O_(5) loading 6.Owt.% and oxygen content 5%, the NOx reduction was higher to about 91%. The efficiency of porous silica on V₂O_(5)/TiO₂ catalytic disk-filter was higher than that of the V₂O_(5)/TiO₂ catalytic sphere-filter. It has been experimentally observed that the V₂O_(5)/TiO₂ catalytic disk-filter has strong resistance of gas flow.
김승호,박영구,고재철 三陟大學校 2000 論文集 Vol.33 No.2
In this study, we synthesized Mn₃O₄ by the different equivalent ratio, investigated XRD, SEM, TG-DTA, BET, and the amount of adsorption of carbon dioxide. As the results, we surveyed that XRD main peak was Mn₃O₄, some peak was MnO₂ and Mn??O??, SEM was globular-shape of the majority, some neele-shape, TG-DTA had weight-loss from 100℃ to 400℃ and endothermic reaction over 400℃, BET was 14.16∼29.63㎡/g and the amount of chemisorption of carbon dioxide was 2.885∼19.628cc/g. Optimal equivalent ratio was 1.00 to the physi-chemisorption of carbon dioxide.
박영구,김승호,최선도,고재철 三陟大學校 2000 論文集 Vol.33 No.2
Methods for the treatment of foul odor was physical, chemical and biological. In this study, we utilized biofilter for the treatment of foul odor. Importance factors of a microbe is nutrients, temperature, moistrure and pH. As the results, it was found that matter of the odor was trimethylamine, removal rate(η(%)) fo (CH₃)N₃ appeared 19.7%∼96.5%(site-1), 20%∼95.5%(site-2) after treated to the biofilter, and tended to decrease from 7 months later by a biofilter compaction. Also size of the tree chip was 2cm, degree of the foul odor was degree of 3∼4, propriety temperature was 20∼40℃, the rate of contained moisture was 60∼70%, acidity was pH=8.
대기확산모델을 이용한 산업단지 내 미세먼지 확산 특성 분석
고재철 ( Jae-churl Ko ),류경원 ( Kyong-won Ryu ),박일건 ( Il Gun Park ) 한국환경기술학회 2018 한국환경기술학회지 Vol.19 No.4
본 연구에서는 확산모델을 이용하여 시흥스마트허브 내 미세먼지(PM<sub>10</sub>, PM<sub>2.5</sub>) 주요 오염원을 기준으로 배출된 미세먼지가 주변지역으로 확산되는 특성을 분석하였다. 그 결과, 모든 지점(A-1~A-6)에서 주풍향에 따라 서풍과 동풍계열에 의해 양방향으로 확산되는 것으로 예측되었고, 특히 서해안쪽에서 불어오는 바람과 내륙에서 부는 바람이 공존하는 지리적인 특징으로 인해 오염물질이 멀리 확산되지 못하고, 배출원지점 인근에 머물러 있는 것으로 예측되었다. 또한, 계절별 PM<sub>10</sub>의 확산 특성에서는 A-3 지점에서 대체적으로 정체되어 농도 수준이 높은 것으로 나타났고, 주변 주거지역에 미치는 영향은 낮은 것으로 예측되었다. In this study, the dispersion characteristics of particle matter(PM<sub>10</sub> and PM<sub>2.5</sub>) discharged in the industrial complex(Siheung Smart Hub) were analyzed based on the pollution sources of particle matter. As a result, it was predicted that it spread in both directions by westerly winds and east winds at all points (A-1~A-6) according to the main wind direction. Especially, it is a geographical feature that winds blowing from west coast and winds blowing from inland It was predicted that the pollutants could not spread far enough and stayed near the source site. In addition, the dispersion characteristics of PM<sub>10</sub> in season showed that the concentration level was generally stagnant at the A-3 point, and the influence on the surrounding residential areas was predicted to be low.
고재철(Jae Churl Ko),전제열(Jae Youl Jeon),박준석(Joon Seok Park),박영구(Young Koo Park) 한국유화학회 2008 한국응용과학기술학회지 Vol.26 No.4
This research was conducted to estimate the characteristics of carbon dioxide decomposition using an inorganic sludge. The inorganic sludge was composed of high amount (66.8%) of Fe2O3. Hydrogen could be reduced with 0.247, 0.433, 0.644, and 0.749 at 350, 400, 450, and 500℃, respectively. The carbon dioxide decomposition rates at 250, 300, 350, 400, 450, and 500℃ were 32, 52, 35, 62, 75, and 84%, respectively. High temperature led to high reduction of hydrogen and better decomposition of carbon dioxide. The specific surface area of the sludge after hydrogen reduction was higher than that after carbon dioxide decomposition. The specific surface area of the sludge was more decreased with increasing of temperature.
산업단지에서 발생하는 미세먼지의 입경분포 및 금속성분 함유 특성조사
고재철 ( Jae-churl Ko ),양정하 ( Jeong-ha Yang ) 한국환경기술학회 2018 한국환경기술학회지 Vol.19 No.3
본 연구에서는 시흥스마트허브에서 발생되는 미세먼지의 입경별 분포 및 금속성분 함유특성을 조사하여 저감정책 수립의 기초자료로 활용하고자 하였다. 입도분포 조사결과에서는 0.54 ㎛ 이하의 초미세입자가 현저히 높은 비율을 차지하고 있었고, PM<sub>2.5</sub>/PM<sub>10</sub> 비율은 일반적인 주거지역보다 높았다. 가을철에 채취된 시료의 이온성분 조사 결과에서는 질산염이온과 황산염이온이 특정지점에서 높게 함유되어 있는 점을 미루어 연소공정 및 화학공정에서 배출되는 초미세먼지의 영향을 받고 있는 것으로 판단되었다. 금속성분 함유특성 조사결과에서는 계절별로 차이를 보이나 알루미늄, 철, 아연 농도가 상대적으로 높게 나타났고, 공업지역과 주거지역간의 상관성은 발견되지 않았다. 시흥스마트허브에서 발생되는 미세먼지의 특성을 고려했을 때 초미세먼지의 저감이 우선시되어야 할 것으로 판단되었다. The distribution of fine particulate matter(PM) and the characteristics of metal components in PM from Siheung Smart Hub are investigated to utilize them as basic data for establishing the reduction policy. Particle size distribution shows that the PM below 0.54 ㎛ accounted for a significantly high proportion, and the PM<sub>2.5</sub>/PM<sub>10</sub> ratio is higher than that of ordinary residential areas. The ionic components analysis results of the samples collected in autumn shows that nitrate ions and sulfate ions are highly contained at specific sites, and it is considered to affected by ultra-fine PM emitted from the combustion process and chemical process. The characteristics of metal components have seasonal difference and aluminum, iron, and zinc concentrations are relatively high, but there is no correlation between industrial and residential areas. Considering the characteristics of PM emitted in Siheung Smart Hub, the reduction of ultra-fine PM should be given priority.