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RISS 인기검색어
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- 저자 : 박유인(Park You In) (검색결과 16 건)
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Preparation of PEBA/PDMS Blend Membranes for Separation of Carbon Dioxide
박유인,강하성,남미연,이은우,김범식,이상학,서정권,서동학,Park, You-In,Kang, Ha-Sung,Nam, Mi-Yeon,Lee, Eun-Woo,Kim, Beom-Sik,Lee, Sang-Hak,Suh, Jeong-Kwon,Suh, Dong-Hak,Feng, Xianshe The Membrane Society of Korea 2009 멤브레인 Vol.19 No.1
Poly(ether block amide) (PEBA)/poly(dimethyl-siloxane) (PDMS) blend membranes (PEBA : PDMS = 5 : 2, 6 : 1 wt%) were prepared through the solution-casting and phase inversion process in order to demonstrate their superior performance in carbon dioxide separation. PDMS and PEBA (4033) were also prepared by the same method using n-butanol as a solvent. To study the gas permeation properties, the membranes were characterized with SEM and tested with carbon dioxide and nitrogen at $35^{\circ}C$ and pressure ranging from 3 to 5 atm. In conclusion, PEBA/PDMS blend membranes were shown to have selectivity for $CO_2/N_2$ separation that is 4 to 5 magnitudes greater than that of PDMS membrane at 3 atm.
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염충균,윤석복,박유인,Yeom, Choong-Kyun,Yoon, Seok-Bok,Park, You-In The Membrane Society of Korea 2008 멤브레인 Vol.18 No.4
This study was focused on the investigation of the effects of membrane module configuration and the temperature of feed retentate flowing along with module length on membrane performance through model simulation. A simulation model of pervaporative dehydration through membrane module assemble in which a number of unit modules are connected in parallel or in series has been established. In this study, ethanol/water mixture was used as model mixture. Some of permeation parameters in the model were quantified directly from the real dehydration pervaporation of ethanol through a lab-made membrane. By adopting the coefficients determined empirically the simulation model could be of more practical value. The simulation of pervaporation with two basic module configurations, that is, parallel connection and series connection, could present the importance of process parameters such as feed rate, module connection mode, number of stages, and inter-stage heating.
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CO<sub>2</sub>/CH<sub>4</sub> 분리를 위한 프로필렌카보네이트/물 흡수제 특성 평가 및 막접촉기의 적용
박아름이,김성중,이평수,남승은,박유인,Park, Ahrumi,Kim, Seong-Joong,Lee, Pyung Soo,Nam, Seung Eun,Park, You In 한국막학회 2016 멤브레인 Vol.26 No.2
To produce renewable biomethane from biogas, the properties of physical absorbents such as water, methanol, 1-methyl-2-pyrrolidone (NMP), poly(ethylene glycol) dimethylether (PEGDME), and propylene carbonate (PC) were studied, and PC was applied to membrane contactor systems. Among physical absorbents, PC exhibited a high contact angle of $58.3^{\circ}$ on polypropylene surface, and a PC/water mixture (5 wt%) increased the contact angle to $90^{\circ}$. Furthermore, the PC/water mixture presented higher $CO_2$ absorption capacities (0.148-0.157 mmol/g) than that of water (0.121 mmol/g), demonstrating a good property as an absorbent for membrane contactors. Actual operations in membrane contactors using the PC/water mixture resulted in $CO_2$ removal of 98.0-97.8% with biomethane purities of 98.5-98.3%, presenting a strong potential for biogas treatment. However, the PC/water mixture yielded moderate improved in $CO_2$ removal and methane recovery, as compared with water in the membrane contactor operation. This is originated from insufficient desorption processes to reuse absorbent and low $CO_2$ flux of the PC/water absorbent. Thus, it is requiring optimizations of membrane contactor technology including development of absorbent and improvement of operation process.
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분리기술 열역학 : 순환식 중공사막 접촉기를 이용한 이산화탄소의 분리
이용희(Lee Yong Hee),박유인(Park You In),전대규(Jurn Dae Gyu),이용택(Lee Yong Taek),이규호(Lee Kew Ho) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.1
The effects of various system parameters on the absorption and sorption of carbon dioxide into the absorbent liquid were investigated in a circulatory hollow fiber membrane contactor with absorption and vacuum mode desorption modules. An aqueous potassium carbonate solution was used as a chemical absorbent and its permeation results were compared to those obtained with pure water as a physical absorbent in order to figure out the effect of chemical reaction. The mixture of carbon dioxide and nitrogen was used as an feed gas, and the pore condition of hollow fiber membrane was hold to be non-wetted through an appropriate control of pressures of the mixture gas and the absorbent. The permeation rate of carbon dioxide was increased with the increment of the flow rate of the absorbent in the absorption module. Particularly, in the case of an aqueous potassium carbonate solution used as an absorbent, the permeation rate of carbon dioxide was higher than that in pure water. The permeation rate was increased with the increments of the flow rate of mixture gas. The desorption rate of carbon dioxide was increased with the increment of the vacuum degree in the desorption module, and the absorbent flow rate for the desorption module.
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중공사막 접촉기를 통한 탄산칼륨 수용액으로의 이산화탄소 흡수거동 연구
염봉열,김민수,이용택,박유인,이규호 ( Bong Yeol Yeom,Minsoo Kim,Yongtaek Lee,You In Park,Kew Ho Lee ) 한국화학공학회 1998 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.36 No.5
The effects of various system parameters on the absorption of carbon dioxide into the absorbent liquid were investigated in a hydrophobic microporous hollow fiber membrane contactor with a configuration of countercurrent. An aqueous potassium carbonate solution was used as an absorbent and its permeation results were compared to those obtained with pure water to figure out the effect af chemical reaction. The mixture of carbon dioxide and nitrogen wav used ar an inlet gas and the pore condition of the hollow fiber membrane was hold to be nonwetted through an appropriate control of pressures of a mixture gas and an absorbent. In case of an aqueous potassium carbonate solution used as am absorbent, the permeation rate of carbon dioxide was about 4-6 times higher than that in pure water. The permeation rate was increased with the increments of the concentration of potassium carbonate in an absorbent, the pressure and the flow rate of a mixture gas.
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송예진,김종후,김예솜,김상득,조영훈,박호식,남승은,박유인,손은호,김정,Song, Ye Jin,Kim, Jong Hoo,Kim, Ye Som,Kim, Sang Deuk,Cho, Young Hoon,Park, Ho Sik,Nam, Seung Eun,Park, You In,Son, Eun Ho,Kim, Jeong F. The Membrane Society of Korea 2018 멤브레인 Vol.28 No.3
In this work, the morphology of polyvinylidene-co-hexafluoropropylene (PVDF-co-HFP) membranes were systemically investigated using phase inversion technique, to target membrane contactor applications. As the presence of macrovoids degrade the mechanical integrity of the membranes and jeopardize the long-term stability of membrane contactor processes (e.g. wetting), a wide range of dope compositions and casting conditions was studied to eliminate the undesired macrovoids. The type of solvent had significant effect on the membrane morphology, and the observed morphology were correlated to the physical properties of the solvent and solvent-polymer interactions. In addition, to fabricate macrovoid-free structure, the effects of different coagulation temperatures, inclusion of additives, and addition of nonsolvents were investigated. Due to the slow crystallization rate of P(VDF-co-HFP) polymer, it was found that obtaining porous membrane without macrovoids is difficult using only nonsolvent-induced phase separation method (NIPS). However, combined other phase inversion methods such as evaporation-induced phase separation (EIPS) and vapor-induced phase separation (VIPS), the desired membrane morphology can be obtained without any macrovoids.
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탄산칼륨 수용액 액막을 통한 이산화탄소의 촉진수송에 미치는 온도와 수송담체 농도의 영향
이용택,염봉열,이용희,박유인,이규호 ( Yongtaek Lee,Bong Yeol Yeom,Yonghee Lee,You In Park,Kew Ho Lee ) 한국화학공학회 1998 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.36 No.5
Model analysis was carried out using the system controlling equations which include the reversible reactions of carbon dioxide with potasaium carbonate to predict the permeation behavior of carbon dioxide in a potassium carbonate liquid membrane. The physicochemical properties of reaction rate constants, equilibrium constants, solubility and diffusion coefficient were represented as a function of the concentration of carbonate ion and the temperature; the calculated solubility and the predicted diffusion coefficient were found to be identical to those published data. The permeation rates could be successfully predicted with several important parameters : the thickness of liquid membrane, the partial pressure of carbon dioxide, the concentration of carrier and the temperature. The increment of the permeation rate was represented in terms of the facilitation factor as a function of carrier concentration, It was found that the permeation rate of carbon dioxide increases significantly as the concentration of carrier increases. The facilitation factor considerably increases together with the permeation rate as the temperature increases. The effective operating conditions could be obtained through this model analysis for the permeation rate as well as the facilitation factor of carbon dioxide across the liquid membrane.
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