광주시 대기오염물질 배출량 변화추이에 관한 연구

서광엽(Gwang-yeob Seo),신대윤(Dae-yewn Shin) 대한환경위생공학회 2009 대한환경위생공학회지 Vol.24 No.4

We conclude the following with air pollution data measured from city measurement net administered and managed in Gwangju for the last 7 years from January in 2001 to December in 2007. In addition, some major statistics governed by Gwangju city and data administered by Gwangju as national official statistics obtained by estimating the amount of national air pollutant emission from National Institute of Environmental Research were used. The results are as follows ; 1. The distribution by main managements of air emission factory is the following ; Gwangju City Hall(67.8%) > Gwangsan District Office(13.6%) > Buk District Office(9.8%) > Seo District Office(5.5%) > Nam District Office(3.0%) > Dong District Office(0.3%) and the distribution by districts of air emission factory ; Buk District(32.8%) > Gwangsan District(22.4%) > Seo District(21.8%) > Nam District(14.9%) > Dong District(8.1%). That by types(Year 2004~2007 average) is also following ; Type 5(45.2%) > Type 4(40.7%) > Type 3(8.6%) > Type 2(3.2%) > Type 1(2.2%) and the most of them are small size of factory, Type 4 and 5. 2. The distribution by districts of the number of car registrations is the following ; Buk District(32.8%) > Gwangsan District(22.4%) > Seo District(21.8%) > Nam District(14.9%) > Dong District(8.1%) and the distribution by use of car fuel in 2001 ; Gasoline(56.3%) > Diesel(30.3%) > LPG(13.4%) > etc.(0.2%). In 2007, there was no ranking change ; Gasoline(47.8%) > Diesel(35.6%) > LPG(16.2%) > etc.(0.4%). The number of gasoline cars increased slightly, but that of diesel and LPG cars increased remarkably. 3. The distribution by items of the amount of air pollutant emission in Gwangju is the following; CO(36.7%) > NOx(32.7%) > VOC(26.7%) > SOx(2.3%) > PM-10(1.5%). The amount of CO and NOx, which are generally generated from cars, is very large percentage among them. 4. The distribution by mean of air pollutant emission(SOx, NOx, CO, VOC, PM-10) of each county for 5 years(2001~2005 ) is the following ; Buk District(31.0%) > Gwangsan District(28.2%) > Seo District(20.4%) > Nam District(12.5%) > Dong District(7.9%). The amount of air pollutant emission in Buk District, which has the most population, car registrations, and air pollutant emission businesses, was the highest. On the other hand, that of air pollutant emission in Dong District, which has the least population, car registrations, and air pollutant emission businesses, was the least. 5. The average rates of SOx for 5 years(2001~2005) in Gwangju is the following ; Non industrial combustion(59.5%) > Combustion in manufacturing industry(20.4%) > Road transportation(11.4%) > Non-road transportation(3.8%) > Waste disposal(3.7%) > Production process(1.1%). And the distribution of average amount of SOx emission of each county is shown as Gwangsan District(33.3%) > Buk District(28.0%) > Seo District(19.3%) > Nam District(10.2%) > Dong District(9.1%). 6. The distribution of the amount of NOx emission in Gwangju is shown as Road transportation(59.1%) > Non-road transportation(18.9%) > Non industrial combustion(13.3%) > Combustion in manufacturing industry(6.9%) > Waste disposal(1.6%) > Production process(0.1%). And the distribution of the amount of NOx emission from each county is the following ; Buk District(30.7%) > Gwangsan District(28.8%) > Seo District(20.5%) > Nam District(12.2%) > Dong District(7.8%). 7. The distribution of the amount of carbon monoxide emission in Gwangju is shown as Road transportation(82.0%) > Non industrial combustion(10.6%) > Non-road transportation(5.4%) > Combustion in manufacturing industry(1.7%) > Waste disposal(0.3%). And the distribution of the amount of carbon monoxide emission from each county is the following ; Buk District(33.0%) > Seo District(22.3%) > Gwangsan District(21.3%) > Nam District(14.3%) > Dong District(9.1%). 8. The distribution of the amount of Volatile Organic Compound emission in Gwangju is shown as Solvent utiliza

Part one: Research in Korea : Improved Anaerobic Digestion Efficiency By Gas Stripper and Disintegrator Pre-treatment

( Gwang Yeob Seo ),( Ke Jin Paik ),( Dae Yewn Shin ) 한국환경보건학회(구-한국환경위생학회) 2004 Current Challenges and Advances in Environmental H Vol.- No.-

Antibiotic Production from Streptomyces Fradiae SF-12 using Wasted Crude Vegetable Oil as an Energy Source

( Gwang Yeob Seo ),( Jong Soo Kim ),( Du Bok Choi ) 조선대학교 공학기술연구원 2010 공학기술논문지 Vol.3 No.3

Crude vegetable oil was isolated from waste activated bleaching earth (WABE).This oil was used for an efficient antibiotic production from Sreptomyces fradiae SF-12. Batch cueture in WABE oil medium (30 g/L) were performed for 5 days at various inoculation times. The maximum tylosin concentration, 2.1 g/l, was obtained at 36 hrs of inoculation culture. This indicates that the tylosin production of Streptomyces fradiae SF-12 was significantly increased by the inoculation time. An initial concentration of 40 g/l gave the highest tylosin concentration and lipase activity, at 2.6 g/l and 156.4 U/ml, respectively. Fed batch cultures carried out in 21 flask containing 500 ml of production medium containing WABE oil for 10 days. Tylosin production was increased with culture time. The maximum tylosin concentration was 4.2 g/l after 10 days of culture. The product yield from oil was 0.67 g/g consumed oil. In the case of viscosity, it ranged of 130.6-150.4 cP after 2days of culture. This indicates that WABE oil is the most suitable carbon source for an efficient tylosin production from Streptomyces fradiae SF-12.

초고층 건물 공기단축을 위한 기둥철근 3개층 선조립공법에 관한 연구

김광희(Kim, Gwang Hee),김재엽(Kim, Jae Yeob),서덕석(Seo, Deok Seok),안성훈(An, Sung Hoon),최희복(Choi, Hee Bok),정병원(Jung, Beong Won) 한국생태환경건축학회 2007 한국생태환경건축학회 논문집 Vol.7 No.2

A Study on the Chemical Composition of Pleuroills ferulae Fruiting Body Cultivated on Mixture of Agricultural Wastes

( Geum Sook Lim ),( Gwang Yeob Seo ),( In Sook Kang ),( Dubok Choi ) 조선대학교 공학기술연구원 2012 공학기술논문지 Vol.5 No.3

This research was to stud the chemical component of Pleurotus ferulae fruiting body cultivated on mixture of agricultural wastes on the proximate composition, amino acid, and fatty acids. The concentrations of moisture, ash protein, fiber, carbohydrate, and fat of fresh fruiting body of P.ferulae were 85.3, 1.0 2.8 3.0,6.7, and 1.2%, respectively. Among sugars, the concentrations of sugar were in the order of Mannitol> Thehalose> Glucose> Fructose> Maltose> Sucrose and their concentration were 12.6, 8.4, 6.8 1.6, 0.9, and 0.05 mg/g, respectively. Among vitamins, the concentrations of vitamin were in the order of Vitamin E> Vitamin C> Vitamin B1> Vitamin D> Vitamin B1> Vitamin A and their concentrations were 36,97, 16.92, 1.64,0,79,0.30, and 0.23 mg/g respectively. Among various fatty acids, linoleic acid and palmitic acid were highest, 70.2 and 13.2%, respectively. Our results indicate that P.ferulae fruiting body cultivated on mixture of agricultural wastes has a good potential to be a resource for food and pharmaceutical uses.

DPPH Radical Scavenging and Tyrosinase Inhibitory Activities of Pseudosasajaponica var Purpurascensshoot Extract

( Byeong Kwon Ahn ),( Gwang Yeob Seo ),( Young Sook Moon ),( Du Bok Choi ) 조선대학교 공학기술연구원 2011 공학기술논문지 Vol.4 No.3

This research was to investigate the extraction yield, DPPH radical scavenging activity and the inhibitory activity of tyrosinase using Pseudosasajaponica var purpurascensshoot extract. The concentration of moisture, crude protein, crude fat, crude fiber, and ash were 89.7, 3.21, 0.49, 3.95, and 0.34%, respectively. Among various fatty acids, the concentrations of C18:2, C18:3, and C 16:0 were highest and their concentrations were 43.3, 26.9, and 25.9%, respectively. On the other hand, other fatty acids such as C 18: 1, C18:0, and 20:0 were below 2.0%. The DPPH radical scavenging activity of each extract increased in the following order: butanol extract (52.6%) > ethyl acetate extract (50.7%) > methanol extracts (42.7%) > ethanol extract (41.3%) > water extract 38.6%) > hot water extract (31.9% > hexane extract (13,6%) > ether (11.8%). On the other hand, in the case of the inhibitory activity of tyrosinase, ethanol extract was highest, that showing 50.9%, Which was about 2.0 fold higher than that of hot water and water extract.

통계분석을 이용한 광주지역 대기오염도

서광엽,백계진,신대윤,Seo Gwang Yeob,Paik Ke Jin,Shin Dae Yewn 한국환경보건학회 2004 한국환경보건학회지 Vol.30 No.5

We investigate changing characteristics and concentration distribution of ambient air quality using data from which obtained local ambient air monitoring network and local meterological measuring sites in Gwangju area from January to December in 2003. Sulfur dioxide ($SO_2$) showed that increase from 8 AM and decrease in 6 PM but, it was not drastically changed concentration. it also 0.010 ppm in 1995 from at this time it's decrease step by step and than some constant in year 2001 to 2003. Nitrogen dioxide ($NO_2$) concentration was showed highest peak in 10 AM and increase again at 6 PM. And also it showed peak concentration (0.026 ppm) in 2001 and decreased from after that times. Ozone was showed peak concentration in 1 PM and Nitrogen dioxide was ditto in 10 AM from this data, we can conclude that this two article ws showed chemical reaction by 3 to 5 hours. There was no case of Ozone alarm in Gwangju area since 1995, but it showed highest ozone concentration (over 0.070 ppm) in May and June of the year and 2 to 4 PM of the day and sometimes it showed increase at the dawn. Ozone product optimum condition was that air temperature is over $25^{\circ}C$, no rain and increase solar radiation (over $20MJ/m^2$) and no wind or below 2.0 m/s wind speed.

Effect of Corn Cob and Activated Bleaching Earth on the Cell Growth of Pleurotus Species

( Jong Soo Kim ),( Gwang Yeob Seo ),( In Sook Kang ),( Byeong Kwon Ahn ),( Du Bok Cho ) 조선대학교 공학기술연구원 2010 공학기술논문지 Vol.3 No.1

To evaluate corn cob and activated bleaching earth (ABE) as energy source for the effective growth of Pleurotus sp.., the proximate composition and physicochemical properties of corn cob and ABE were investigated. Among various fatty acids of crude vegetable oil separated from ABE, C18:1 and C18:2 were 34.4 and 44.9%, higher than other fatty acids. Cellulose and lignin concentrations of corn cob were 37.8 and 10.8, respectively. In the case of crude protein and total free sugar concentrations, they were 3.9 and 0.5%. In order to investigate the effect of mixture ratio of corn cob and ABE for mushroom growth, 12 kinds of Pleurotus sp.. were used. The optimum mixture ratio of corn cob and ABE for the growth of P. ostreatus, P. ferulae, P. eryngii, P. nebrodensis, and P. pulmonarius under solid state was 50: 50 and the optimum mixture ratio of P. sajor-caju, P. mutilis, and P. ctirinopileatuisit was 75: 25. On the other hand, in the case P. florida, P. tuberregium, P. sapidus, and P. cornucopiae, it was 100: 0. These results indicate that the growth of Pleurotus sp.. was strongly affected by mixture ratio of corn cob and ABE under solid state cultivation.

Denitrification in the Culture of Pseudomonas sp Using Synthetic Wastewater

( Byeong Kwon Ahn ),( Gwang Yeob Seo ),( In Sook Kang ),( Dubok Choi ) 조선대학교 공학기술연구원 2012 공학기술논문지 Vol.5 No.4

The objective of this study is 10 investigate on the effect of carbon source, initial pH of media, nitrate concentration, and working temperature on effective removal of nitrate in the culture of Pseudomona chodang-345 using synthetic wastewater. Among different carbon sources when glucose and acetate were used, the nitrate removals were 22.3 and 22.9%, respectively. On the other hand, when methanol and ethanol were used, they were only 2.2 and 3.8%, respectively. When the initial pH of media ranged of 6.5 to 7.5, the maximum removal efficiency of nitrate gave 100%. On the other hand, when the initial pH was increased from 8.0 to 10.0. it was decreased from 94.2 10 61.8%. When working temperature was increased from 20 to 30℃, the removal efficiency of nitrate was increased from 72.4 to 100%. On the other hand al above 37.5℃ of temperature, the removal efficiency of nitrate was decreased from 98.6 to 80.8%. These results would be useful information for operating a denitrification process in wastewater treatments plants using Pseudomonas chodang-345.

Alkaline $\alpha$-amylase Production from Bacillus megaterium

Jia, Shiru,Lim, Chae-kyu,Seo, Gwang-Yeob,Nam, Hyung-Gun Korean Society for Environmental Sanitary Engineer 2009 대한환경위생공학회지 Vol.13 No.1

The enzyme expressed from strain L-49 was 2.01 times higher than that of original strain. Strain L-49 can grow on culture plate with $50{\mu}g/mL$ ampicillin. The synthesis of $\alpha$-amylase was greatly suppressed when strain L-49 was grown on monosaccharide such as glucose and polysaccharide at the same time cell concentration was low. Amylase production was enhanced when the bacterium was grown on starch and dextrin. Among different nitrogen sources tried, yeast extract was found to be the best followed by panpeptone, peptone, meat extract, bean meal, and corn steep liquor. The average rate of enzyme production was enhanced for 3~4 times in fermentation time from 24h to 44h. The sugar uptake rate has also increased. Low oxygen supply rate enhanced the rate of strain propagation but depressed the enzyme production. Hence it is benefit to obtain high enzyme activity that agitation speed maintained not lower than 400r/min and aeration rate maintained greater than 1:1vvm.