백우현 교수 정년퇴임 기념호

학회자료 한국환경과학회 2006 한국환경과학회지 Vol.15 No.3

수질 정화 기능 극대화 인공식물섬 개발을 위한 특허 동향 분석

김정호 ( Jeong Ho Kim ),윤용한 ( Yong Han Yoon ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

This study for the development of water purification artificial floating island maximizing domestic artificial floating island patent trends and product development, according to the timing of patent registration was analyzed for trends. In addition, domestic invention patent technology artificial floating island typed according to the purpose and characteristics of domestic patents were Artificial Floating Island, In particular, domestic leisure space with a growing population and the need for securing emerging role as a reservoir of water only in the past, who do appeal as a tourist destination or as an ecological space utilized, and accordingly will transform and the need to secure a hydrophilic, degrade water quality problems using this aquatic environment (water acquisition and hydrophilic), the requirements are a big obstacle is the reality factor. This patented product differentiation strategy through the analysis of the development of technology progressiveness (Field Application) in terms of water quality improvement and maintenance side, and the hydrophilic side scenery, ecological restoration aspects, and applicability to the field and taking into account existing technology economic aspects of distinction were presented and advertised a lot in terms of cost compared to other techniques without the use of highly efficient methodology for building a water purification and also appears identity appeal, wetlands, rivers, etc. can be applied broadly technician widespread deployment and installation time to less simple and more are expected to spread.

Caffeine과 Carbamazepine: 낙동강 수계에서의 검출 및 정수처리 공정에서의 거동

손희종 ( Hee Jong Son ),염훈식 ( Hoon Sik Yeom ),정종문 ( Jong Moon Jung ),장성호 ( Seong Ho Jang ),김한수 ( Han Soo Kim ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

The aims of this study were to investigated the occurrence of caffeine and carbamazepine in Nakdong river basin (8 mainstreams and 2 tributaries) and the behavior of caffeine and carbamazepine under drinking water treatment processes (conventional and advanced processes), The examination results showed that caffeine was detected at all sampling sites (5.4~558.5 ng/L), but carbamazepine was detected at five sampling sites (5.1∼79.4 ng/L). The highest concentration level of caffeine and carbamazepine in the mainstream and tributaries in Nakdong river were Goryeong and Jinchun-cheon, respectively. These pharmaceutical products were completely removed when they were subject to conventional plus advanced processes of drinking water treatment processes. Conventional processes of coagulation, sedimentation and sand-filtration were not effective for their removal, while advanced processes of ozonation and biological activated carbon (BAC) filtration were effective. Among these pharmaceuticals, carbamazeoine was more subject to ozonation than caffeine.

초음파 (US)와 다양한 파장범위의 자외선 (UV) 조사에 따른 DEP 분해특성에 관한 연구

나승민 ( Seung Min Na ),( Jin Hua Cai ),신동훈 ( Dong Hoon Shin ),( Ming Can Cui ),김지형 ( Jee Hyeong Khim ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

Diethyl phthalate (DEP) is widely spread in the natural environment as an endocrine disruption chemicals (EDs). Therefore, in this study, ultrasound (US) and ultraviolet (UVC), including various applied power density (10-40 W/L), UV wavelengths (365 nm, 254 nm and 185 nm) and frequencies (283 kHz, 935 kHz) were applied to a DEP contaminated solution. The pseudo-first order degradation rate constants were in the order of 10-1 to 10-4 min-1 depending on the processes. Photolytic and sonophotolytic DEP degradation rate also were high at shortest UV wavelength (VUV) due to the higher energy of photons, higher molar absorption coefficient of DEP and increased hydroxyl radical generation from homolysis of water. Sonolytic DEP degradation rate increased with increase of applied input power and the dominant reaction mechanism of DEP in sonolysis was estimated as hydroxyl radical reaction by the addition of t-BuOH, which is a common hydroxyl radical scavenger. Moreover, synergistic effect of were also observed for sonophotolytic degradation with various UV irradiation.

2011년 동아시아에서 기류의 이동 경로에 따른 청원에서 측정한 에어로졸 질량 농도 및 원소 성분 분석

김학성 ( Hak Sung Kim ),변광태 ( Kwang Tae Byun ),정용승 ( Yong Seung Chung ),최현정 ( Hyun Jung Choi ),김민정 ( Min Jung Kim ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

This study analyzed mass concentrations of TSP, PM10 and PM2.5 and elemental constituents according to the isentropic backward trajectories of air parcel from Cheongwonin East Asia during the period January - October, 2011. Mass concentrations of the continental polluted airflow (CP) showed levels of TSP and PM10 mass concentrations higher than the continental background airflow (CB). Also, PM2.5 mass concentrations of anthropogenic fine particles ran higher in CP than in CB. The elemental constituents and elemental constituent ratio ended up varying depending on the origin of atmospheric aerosols generated. The average absolute content of elemental constituents reached its height in CB, the ratio of anthropogenically originating elements (PE) among the all elements (AE) analyzed marked a high in CP, and Mg+Na/AE reached its height in the oceanic airflow (OA). At the same time, TSP, PM10 and PM2.5 mass concentrations, the ratio of PM2.5/TSP and PE/AE element ratio ran higher in CP than CB. Episodes of large-scale transport of atmospheric pollutants as observed at Cheongwon were 8 cases and 22 days. The ratios of PM10, PM2.5 among TSP mass concentrations showed different results and the ratios of PM2.5 showed an increasing trend in the episodes of anthropogenic air pollution transport. Overall, dustfall episodes show a level of elemental constituents higher than those of anthropogenic air pollution.Dustfall episodes were observed to contain more of Fe, Al and Ca originating from continental soils and those of air pollution were observed to contain more of Zn, Mn, Cu and Pb. By difference in contents of absolute elemental constituents, episodes of anthropogenic air pollution showed a high PE/AE rate, and dustfall episodes a high SE/AE rate.

빈그릇교육을 통한 대학 기숙사의 음식물쓰레기 감량효과에 대한 연구

이은경 ( Eun Kyeong Lee ),김덕길 ( Deok Gil Kim ),김승우 ( Seung Woo Kim ),정신영 ( Sin Young Jung ),최광수 ( Kwang Soo Choi ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

Clean plate education program was applied to change students` perception on food waste in the dormitory cafeteria of T campus G university that is located in Tongyeong, in which 408 students joined the program. From survey and food waste monitoring, it was found that clean plate education program was effective to change students` perception as well as action. Half students (50.5%) answered that their eating habit changed, and among them 30.1 % students left a little food on the plate and 13.1% students left no food behind. Many students become aware of the seriousness of food waste issue (84.5%), and 44.2% students were trying to reduce leftover. Food waste generation in cafeteria was 341.9, 576.1, 344.3g/capita/day in 2005, 2007 and 2008, respectively, And this shows that food waste generations were much less than national average data except 2007, Therefore we could conclude that clean plate education program was satisfactory to change students` perception on food and to change their action, and it could be an excellent new approach to resolve a social issue caused by food waste. In order to reduce food waste generation at dormitory cafeteria, food taste and diet should be improved and students` eating habits also should be changed. For this, a practical program like clean plate education should be organized.

부산지역 겨울철 고농도 미세먼지 발생일의 기상학적 특성

전병일 ( Byung Ii Jeon ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

The purpose of this study was to analyze the meteorological characteristics of wintertime high PM10 concentration episodes in Busan. PM10 concentration has been reduced for the past four years and recorded near or exceeded 100 ㎍/㎥ (national standard of PM10). High concentration episodes in Busan were 6 case, PM2.5/PM10 ratio was 0.36∼0.39(mean 0.55). High PM10 concentration occurred during higher air temperature, more solar radiation and sunshine, lower relative humidity, and smaller cloud amount. Synoptically, it also occurred when Busan was in the center or the edge of anticyclone and when sea breeze intruded. An analysis of upper air sounding showed that high PM10 concentration occurred when surface inversion layer and upper subsidence inversion layer existed, and when boundary layer depth and vertical mixing coefficient were low. An analysis of backward trajectory of air mass showed that high PM10 concentration was largely affected by long range transport considering that it occurs when air mass is intruded from China.

동충하초 열수추출액의 항고지혈증 효과에 관한 연구

김한수 ( Han Soo Kim ),김민아 ( Min A Kim ),장성호 ( Seong Ho Jang ),이원기 ( Won Ki Lee ),류재용 ( Jae Young Ryu ),이춘식 ( Chun Sik Lee ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

This study was performed to observe the effects of the feeding physiological activity substance in Cordyceps militaris hot-water extract intake on the improvement of lipid components and metabolic enzyme activities in the serum of dietary hyperlipidemic rats (SD strain, male) fed the experimental diets for 5 weeks. The concentrations of cholesterol (total cholesterol, β-lipoprotein, LDL-cholesterol, free cholesterol and cholesteryl ester), atherosclerotic index, triglyceride (TG), phospholipid (PL) and blood glucose in sera were remarkably lower in the Cordyceps militaris extract intake group than in the hyperlipidemic rats. In the ratio of HDL-cholesterol concentration was higher percentage in the Cordyceps militaris extract intake group than in the hyperlipidemic rats. The activities aminotransferase (AST, ALT) in sera were rather lower in the Cordyceps militaris extract administration than in the hyperlipidemic rats. From the above research, Cordyceps militaris extract were effective on the improvement of the lipid compositions in sera of dietary hyperlipidemic rats.

합성 제올라이트를 이용한 pH에 따른 Cu와 Zn 이온의 흡착특성

이창한 ( Chang Han Lee ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

The removal property of Cu and Zn ions by chemical precipitation and adsorption using zeolite (Z-C1) prepared from coal fly ash (CFA) were evaluated in this study. Adsorption kinetic and equilibrium mechanisms described to analyze parameters and correlation factors with Lagergen 1st and 2nd order model and Langmuir and Freundlich model. Analysis of adsorption kinetics data revealed that the pseudo 2nd order kinetics mechanism was predominant. The equilibrium data in pH 3 - 5 were able to be fitted well to a Langmuir model, by which the maximum adsorption capacities(qmax) were determined at 124.9 - 140.1 mg Cu2+/g and 153.2 - 166.9 mg Zn2+/g, respectively. We found that Z-C1 has a potential application as absorbents in metal ion recovery with low pH.

N2O 분해를 위한 전이금속이 도핑된 메조포러스 실리카 촉매의 합성과 표면 특성에 관한 연구

이갑두 ( Kamp Du Lee ),노민수 ( Min Soo Noh ),박상원 ( Sang Won Park ) 한국환경과학회 2012 한국환경과학회지 Vol.21 No.7

The purpose of this study is to synthesize transition metal doped mesoporous silica catalyst and to characterize its surface in an attempt to decomposition of N2O. Transition metal used to surface modification were Ru, Pd, Cu and Fe concentration was adjusted to 0.05 M, The prepared mesoporous silica catalysts were characterized by X-ray diffraction, BET surface area, BJH pore size, Scanning Electron Microscopy and X-ray fluorescence. The results of XRD for mesoporous silica catalysts showed typical the hexagonal pore system. BET results showed the mesoporous silica catalysts to have a surface area of 537 ~973 m2/g and pore size of 2∼4 nm. The well-dispersed particle of mesoporous silica catalysts were observed by SEM, the presence and quantity of transition metal loading to mesoporous surface were detected by XRF. The N2O decomposition efficiency on mesoporous silica catalysts were as follow: Ru>Pd>Cu>Fe. The results suggest that transition metal doped mesoporous silica is effective catalyst for decomposition of N2O.