Cellulose Triacetate 막에서 CD₂ 와 CH₄혼합기체의 투과

배성렬,노상호,이규훈 한양대학교 에너지 ·환경기술연구소 1995 에너지·環境技術論文集 Vol.2 No.-

Cellulose Triacetate막에서 CO₂의 수착실험은 pressure decay method에 의해서 행하였고, 수착실험의 온도범위는 50℃, 60℃이고 압력범위는 13atm 까지 가압하여 수착 등온선을 측정하였다. 이런 조건하에서는 CO₂의 수착평형은 Dual-mode sorption model에 의한 이론치와 실험치가 비교적 일치한다는 것을 알 수 있다. Dual-mode sorption model 수착 매개 변수들은 비선형 최소 자승법으로 구하였다. 투과실험은 같은 온도 조건과 25atm까지의 압력 범위까지 수행하였다. 실험에서 얻은 평균투과계수의 압력의존성은 고온, 고압에서 기존의 Dual-mode mobility model로는 설명할 수 없었다. 이런 현상은 기체 분자에 의한 가소화 현상 때문으로 생각할 수 있다. 따라서 modified dual-mode mobility model을 적용시킨 결과 잘 일치하였다. 또한 CTA막에서 CO₂와 CH₄혼합기체의 투과 실험을 40℃, 50℃, 60℃의 온도 범위와 25 atm의 압력 범위 하에서 행하였다. 순수 기체에 비해서 복잡한 혼합 기체의 투과를 설명하기 위해서 Dual-mode mobility model을 적용시켜 보았고 잘 일치하는 것을 알 수 있었다. 또한 혼합 기체의 거동에서 CO₂을 고려한 부분투과계수를 구하였다. 이때의 부분투과계수의 압력 의존성이 Dual-mode mobility model에 잘 일치하는 것을 알 수 있었다. The sorption isotherms of CO₂in cellulose triacetate membrane sample were measured by a pressure decay method to examine the sorption model of CO₂. And the permeation experiments were perfomed by variable volume method to analyze the permeation model of CO₂. Sorption experiments carried out 50, 60℃ and pressure up to 13 atm in cellulose triacetate. The sorption equilibria of CO₂at these temperature range can be simulated well by dual-mode sorption model. The values of the dual-mode sorption parameter were estimated by the non linear least square method. Permeation runs were carried out at same trmperature and pressure to 25atm. The pressure dependence of mean permeability of CO₂at these temperature range couldn't accurately be simulated by a dual-mode mobility model because of the plasticization action of sorbed gas in the polymer membrane. But more satisfactorily simulated by a modified dual-mode mobility model. An analytical solution has been obtained for the dual-mode mobility model extended to a binary gas mixtures to describe the pressure dependence of mean permeablity for CO₂and CH₄in the cellulose triacetate membranes. Binary gas of permeation rate measured at 40, 50, 60℃ and upstream pressure 25atm. Mean permeability of each component in a binary gas were calculated by the basis of the dual-mode mobility model.

염수의 담수화를 위한 막분리 장치 설계제작 및 성능

배성렬,김영채,이종일 한양대학교 에너지·환경기술연구소 1997 에너지·環境技術論文集 Vol.3 No.-

폐수의 처리와 해수의 담수화에 사용되는 막분리장치의 효율을 증가시키기 위하여 새롭게 설계, 제작하였다. 유체의 흐름을 개선하여 염수를 사용한 실증 실험으로 상업용 제품과 비교하여 10%의 향상된 분리성능을 갖은 장치를 개발하였다.

매립지 침출수내의 Ca^2+, Fe^2+,3+, 휴믹물질 동반제거에 관한 연구

김지태,고명욱,배성렬 漢陽大學校 工學技術硏究所 2002 工學技術論文集 Vol.11 No.-

탄산칼슘(CaCO_3) 결정화 석출과 수산화철(Fe(OH)_3)의 결정화 석출을 위해 반회분식 장치를 이용하였으며, 반응온도는 25±2℃로 유지하였고 교반속도는 40∼80rpm으로 교반하였다. 매립 침출수내에 함유되어져 있는 Ca^2+와 Fe^2+, Fe^3+를 응집 침전물로 결정화한 후, 활성탄에 흡착시켰다. 휴믹물질을 금속 이온 물질과 배위 결합시켜 함께 제거할 수 있었다. 침출수 처리의 적정pH 범위는 9∼10이었고, 약 90%이상의 Ca^2+, 휴믹물질이 동반제거됨을 알 수 있다. 그러나 Fenton 산화처리 이후에 활성탄 흡착에 의한 Fe^2+,3+, 휴믹물질의 동반제거에 있어서 충분한 처리방법이 되지 못함을 관찰할 수 있다. Batch reactor was used in this study for treating CaCO_3 and Fe(OH)_3, temperature was maintained at 25±2℃ and stirring speed was 40∼80rpm. Ionic metals such as Ca^2+, Fe^2+ and Fe^3+ in leachate were precipitated and adsorbed by activated carbon. Subsequently ionic metals and humic substances that combined with Ca^2+, Fe^2+ and Fe^3+ are removed. The removal efficiency of humic substances was varied with pH value. At the pH 9∼10 range in the treated leachate, Ca^2+, humic substances was removed over 90%. but removal of Fe^2+,3+, humic substances didn't show that the efficient treatment was absorbed by activated carbon after Fenton treat.

도시고형폐기물의 성분분석에 관한 연구

선정화,김희택,배성렬,강신춘 한양대학교 에너지·환경기술연구소 1994 에너지·環境技術論文集 Vol.1 No.-

도시지역에서 배출되는 일반폐기물에 대한 성분분석결과 밀도는 250∼300㎏/㎥, 수분함량은 중량비로 평균 51.83%, 가연성분 42.09%, 회분 6.08%로 각각 측정되었다. 한편, 저위발열량은 주거지역이 700∼1,700㎉/㎏, 상업지역이 2,000㎉/㎏이상으로 측정되어 상업지역이 주거 지역보다 발열량이 높은 폐기물이 배출됨을 알 수 있었는데 이는 수분함량이 높은 주개류의 배출이 상업지역이 주거지역보다 적으며 소비자 포장지로서 종이, 비닐, 플라스틱류 등의 사용이 많은데 기인하는 것으로 생각되어 진다. 한편, 분리수거, 유가품에 대한 자원 재활용, 연탄재 배출의 감소추세 등의 효과로 폐기물 중 불연성 함량은 줄어들고 반면 종이, 비닐, 플라스틱류 등의 가연성 폐기물의 함량은 크게 늘어 전체적으로 폐기물의 질이 향상되고 있음을 알 수 있다. The analysis results of components of municipal solid wastes are as follows : ① Density ranged from 250㎏/㎥ to 300㎏/㎥. ② Water content, combustible content and ash content measured 51.83%, 42.09%, 6.08% respectively. ③ Low calorific value was ranged from 700 to 1,700㎉/㎏ in residential area and measured 2,000㎉/㎏ in commercial one. Therefore, it was known that calorific value of wastes in residential area is smaller than that in commercial area. Also, the quality of wastes was improved by increase of combustible content which results from vitality of valuable recycling, reduction trend of briquette ash generation rate and increase of paper, plastic consumption as wrapping materials.

중년후기 여성의 폐경관리와 삶의 질에 영향을 미치는 요인 분석

차경미,남철현,배성욱,서인선,김기열 慶山大學校 保健福祉硏究所 2002 保健福祉硏究 Vol.7 No.-

This study was conducted to identify influencing factors to management of menopause and quality of life and also to develope the developing education program of HRT(hormone replacement therapy) for healthy aging women. The hypothetical model explaining health promoting behavior and quality of life was constructed on the basis of Pender's health promotion model, Nho's quality of life model. The empirical data for testing the hypothetical model consisted of 356 late-middle aged(45~64) women who visited from 5th september to 20th september, 1999, in Pohang city. The reliabilities of instruments were adequate(Cronbach's alpha=0.7941, -0.9098). SPSS PC+ program were utilized for descriptive statistics and covariance structure analysis. The summary of research results was as follows: 1) The influential factors to management of menopause showed: The directed factors were the influences of family(β=.29), economical status(β=-.12), experienced symptoms of menopause(β=.24), multidimensional health locus of control(β=.15), subjective health status of compared with to another person(β=-.18). The indirected factors were the influences of family(β=.04), age(β=.05), experience of HRT's information(β=.02), belonging to occupation(β=-.03), stop of menstruation(β=-.02). 2) The influential factors to quality of life showed: The directed factors were the influences of family(β=.39), self efficiency(β=.15), subjective health status(β=-.31). The indirected factors were the influences of family(β=.37), age(β=-.97), belonging to occupation(β=.01), educational status(β=.21), a monthly income(β=.26). In conclusion, the purpose for "Healthy aging" in late-middle aged women is increasing of the quality of life after menopause. All the health providers have to efforts and harder study for developing health maintenances and health aging in late-middle aged women. Consequently, we need many kinds of public health education programs. And farther more, the developing HRT's educational program is very important in late middle-aged women's healthy aging.

회분식 반응기에서 ABS 수지의 열분해특성에 관한 연구

김지태,곽현,류한영,배성렬 漢陽大學校 工學技術硏究所 2002 工學技術論文集 Vol.11 No.-

본 연구는 앞으로 폐플라스틱 뿐 아니라 다른 폐기물에도 보편화될 것으로 예상되는 열분해공정을 이용하여 ABS 수지(Acrylonitrile-Butadiene-Styrene resign)에 대해 열분해 실험을 행하였다. 교반기가 달린 회분식 반응기에서 5대범용수지(PS, PP, PE, PVC, ABS)중 전기부품과 자동차 부품 등으로 많이 사용되고 있는 ABS 수지 100g을 400, 420, 440℃ 의 분해온도에서 등온 열분해실험을 행하였다. 대부분 고분자의 열분해 반응은 1차이므로 1차반응으로 가정하고 속도록적 해석과 함께 활성화에너지를 구하였다. 실험변수인 분해온도가 오일, 가스 및 잔류물질의 수율과 오일 생성물의 성분분포에 미치는 영향을 관찰하였다. 분해온도에 따라 약간의 차이가 나긴 하지만 주성분은 styrene, benzenebutanenitrile, ethylbenzene 등의 성분으로 이루어져 있었고, 생성오일의 양은 분해 온도가 높을수록 증가했으며, 부가가치가 큰 styrene 단량체 역시 400℃ 일 경우 32.6wt%였으나 440℃일 경우 45.8wt%까지 크게 증가하였다. Isothermal pyrolysis experiment was performed on ABS resign 100g in batch reactor. The temperature was varied from 400℃ to 440℃ at intervals of 20℃. Because most plastic degradation reaction was first order, it assumed first order and elucidated the kinetics. This was the basis of characteristics analysis of ABS resign degradation mechanism. Also, the effect of temperature on the yield of oil, gas and char product change was observed, and the distribution of oil product components was observed. Main components of oil product were a little difference with degradation temperature, but they consist of styrene, benzenebuttanenitrile, ethylbenzene etc. and their yield increased along with degradation temperature. Particularly, high value added styrene yield 32.6wt% at 400℃ but increased to 45.8wt% at 440℃.

정수공정에서 이취미물질 제거에 관한 연구

김지태,한명애,곽현,배성렬 漢陽大學校 工學技術硏究所 2000 工學技術論文集 Vol.9 No.1

이취미물질중에서 페놀, Geosmin, 2-MIB를 선정하여 응집제(PACS)와 흡착제(PAC) 및 산화제(Cl2, ClO2)로 처리하였을 때 제거율을 알아보았다. 페놀의 경우 이산화염소(ClO2)와 분말활성탄(PAC)으로 처리하였을 때 제거효율이 높았고, Geosmin과 2-MIB는 분말활성탄(PAC)으로 처리하였을 때 제거효율이 높았다. 그러나 페놀, Geosmin, 2-MIB 모두 응집제(PACS), 염소(Cl2)로 처리하였을 경우에는 제거효율이 거의 없음을 알 수 있었다. The removal ratio of phenol, geosmin, and 2-MIB selected in odor and taste causing materials was investigated, when water was treated with coagulant(PACS), adsorbent(PAC), and oxidants(Cl2, ClO2). Phenol was removed at a relatively higher rate by the treatment with CIO2 and PAC(Powder Activated Carbon). The other side, geosmin and 2-MIB were removed at a higher rate by the treatment with PAC. But it was found that the treatment with coagulant(PACS) and chlorine(Cl2) for the removal of phenol, geosmin and 2-MIB was little removal efficiency.

TRANSPORT OF OXYGEN AND CARBON DIOXIDE THROUGH POLYCARBONATE MEMBRANE

Bae, Seong Youl,Cho, Du Hyon,Kim, Hee Taik,Kumazawa, Hidehiro 한국화학공학회 1994 Korean Journal of Chemical Engineering Vol.11 No.2

Sorption equilibria and permeation rates for oxygen and carbon dioxide in polycarbonate membrane were measured at different temperature between 30 and 60℃ and at pressures up to 2.5 MPa. The pressure dependence of mean permeability coefficient to oxygen obeyed the conventional dual-mode mobility model, whereas that to carbon dioxide followed a modified dual-mode mobility model with concentration-dependent diffusivities, as that of polystyrene to the same gas did.

PYROLYSIS OF POLYSTYRENE IN A BATCH - TYPE STIRRED VESSEL

Bae, Seong Youl,Kim, Young Sil,Hwang, Gyon Chul,Yi, Sung Chul,Moon, Sei Ki,Kumazawa, Hidehiro 한국화학공학회 1999 Korean Journal of Chemical Engineering Vol.16 No.2

Isothermal pyrolysis of PS was investigated in the relatively low temperature range of 370 to 400℃, using a stirred tank of batch-type with respect to the liquid phase ; the gas phase was operated in an open system. To maintain an isothemal condition, the stirring speed was 80 rpm. At the initial stage of pyrolysis at each temperature, the first-order kinetic law was found to be operative. The activation energy was evaluated to be 224 kJ/mod a value close to the previously reported one. The main liquid products were single and double aromatic ring species styrene, a-methylstyrene, toluene and 1,3-diphenylpropane, 1,3-diphenylbutene. The yield of styrene was much larger than any other product and amounted to ca. 70 % by weight. The present reactor, operated in an open system with respect to the gas phase, tends to suppress the scission of volatile diphenyl radicals because of short residence times of these radicals.

Degradation of Polystyrene in Supercritical n - Hexane

Bae, Seong Youl,Kumazawa, Hidehiro,Hwang, Gyou Cheol,Choi, Jang Hwan 한국화학공학회 2001 Korean Journal of Chemical Engineering Vol.18 No.6