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申盛義,李性琪,崔炯一,申大允,金永範,李抵憲,姜永周 조선대학교 환경연구소 1989 環境公害硏究 Vol.6 No.-
In this study, we made investigation into water permeation, solute separation, concentration and Na^(+), K^(+), Mg^(2+), Ca^(2+), Cl^(-), SO^(2)_(4)-, HCO^(-)_(3) ions separation of seawater by the revers osmosis process using a suitable semipermeable membrane. The different thickness of membranes were prepared. On heat treatment, temperature was 80℃ and thier effects were also investigated. The flat single module system was made to be capable of treating feed solution at 200-2000cc/min and 120 atm. The experimental results can be summerized as follows: 1) As the effective operating pressure increased, permeability of pure water proportionally increased. 2) As the exposure period of the manufactured membrane in air increased, permeation rate increased, but as the thickness of the membrane increased, permeation rate decreased. 3) The capacity for being reproductive of the manufactured membrane (CA: 30wt%, Formamide: 45wt%, Acetone: 25wt%) in their performance was less than 10-30% and agreed with that reported in the literature. 4) We could separated about 85-95% of salt ion in seawater using a flat single module system.
Laminar Jet Absorber의 利用에 의한 CaCO₃-slurry中 에로의 So₂吸收에 關한 硏究
申盛義 朝鮮大學校 工科大學 1974 論文集 Vol.3 No.-
This absorber has been only used for studying systems without gas phase resistance. In this case, however, a modified laminar jet reactor has been built, in which the gas phase resistance easily can be either theoretically calculated or experimentally determined. In this reactor the SO₂-N₂system has been studied and especially the SO₂ absorption in CaCO₃-Slurry. It has been verified that in the gas phase the mass transport closely follows the penetration state. The rate of absorption of SO₂in CaCO₃-Slurry is slightly greater than that in water probably owing to reaction between SO₂and H₂CO₃??. The theoretically calculated and experimentally determined values of K?? are in good agreement with each other.
[논문]다른 온도로 소성한 왕겨를 콘크리트 흔화재로 사용한 콘크리트의 강도특성에 관한 연구
신상엽,정의창,정유진,박문석,백계승,최세윤,김영수 釜山大學校生産技術硏究所 2007 生産技術硏究所論文集 Vol.66 No.-
본 논문은 다른온도로 소성한 왕겨를 콘크리트 흔화재로 사용한 콘크리트의 강도특성을 알아보기 위한 것으로 물결합재비를 35% 로 고정하고 왕겨의 혼입률을 각기 달리하여 소성온도에 따른 압축강도 특성과 왕겨의 혼입률에 따른 강도특성을 평가하였다. 실험결과 왕겨가 혼화재로서 성능을 발휘하는 최저 온도가 600℃인 것으로 나타났으며, 700℃로 소성한 경우 가장 우수한 강도 값을 나타내었다. 또한 혼입률별 압축강도 특성에서는 혼입률 10% 에서 가장 우수한 강도발현을 나타내었다.
申盛義 조선대학교 환경연구소 1991 環境公害硏究 Vol.8 No.-
In this study, I porformed investigation to conservate for water quality of the Yeong San river. The monthly water analytical points are five station along the up-stream of the Yeong San river basin. I reported the analytical values of physical factors from 1988 to 1990 about pH., Wt., DO, BOD, COD, SS, T-N, and T-P.
高在能,申盛義 조선대학교 생산기술연구소 1985 生産技術硏究 Vol.7 No.2
The study on the adsorption characteristics of zinc ion on activated carbon resolved itself into the following six points concerning the effect of pH, adsorption velocity, adsorption isotherm, cations, and anions. The results are as follows; 1. The adsorbed amount of zinc ion on activated carbon increased rapidly from equilibrium pH 4 to equilibrium pH 7, and zinc ion was absorbed easily in the neutral region and NH_(4)0H alkaline medium pH 7~11. 2. Adsorption isotherm of zinc ion on activated carbon was shown the Freundlich's equation. 3. Zinc ion was easily adsorbed in the form of complex anion such as ZnI_(4)^(2-) and Zn(CN)_(4)^(2-) respectively. 4. Adsorption of zinc ion on activated carbon is improved by the addition of halide ions. The order of this improvement of halide ions is F^(-)〉Cl^(-)〉Br^(-)〉I^(-). 5. The effect upon the adsorption of zinc ion on activated carbon presented itself in the order of influencing power such as S0_(4)^(2-)〉N0_(3-)〉CI^(-). 6. Zinc ion was adsorbed preferentially in the case of coexistence of Zn^(2+) and Ni^(2+).
Phosphorus Removal in Pilot Plant Using Biofilm Filter Process from Farm Wastewater
Shin, Sung-Euy,Choi, Du-Bok,Lee, Choon-Boem,Cha, Wol-Suk The Korean Society for Biotechnology and Bioengine 2006 Biotechnology and Bioprocess Engineering Vol.11 No.4
Various environmental conditions affecting total phosphorus removal from farm wastewater in a biofilm filter process were investigated using loess balls and Chromobacterium LEE-38 at a pilot plant. When Chromobacterium LEE-38 was used, the removal efficiency of total phosphorous was approximately 10- or 5-fold higher than that of Acinetobacter CHA-2-14 or Acinetobacter CHA-4-5, respectively. When a loess ball of $11{\sim}14mm$ manufactured at a $960^{\circ}C$ calcining temperature was used, the removal efficiency of total phosphorous was 90.0%. When 70% of the volume fraction was used, the maximum efficiency of total phosphorus removal was 93.1%. Notably, when the initial pH was in the range of 6.0 to 8.0, the maximum removal efficiency of total phosphorus was obtained after 30 days. When the operating temperature was in the range of 30 to $55^{\circ}C$, the maximum removal efficiencies of total phosphorus, 95.6 to 94.6%, were obtained. On the other hand, at operating temperatures below $20^{\circ}C$ or above $40^{\circ}C$, the removal efficiency of total phosphorous decreased. Among the various processes, biofilm filter process A gave the highest removal efficiency of 96.4%. Pilot tests of total phosphorus removal using farm wastewater from the biofilm filter process A were carried out for 60 days under optimal conditions. When Acinetobacter sp. Lee-11 was used, the average removal efficiency in the p-adsorption area was only 32.5%, and the removal efficiencies of chemical oxygen demand (COD) and biological oxygen demand (BOD) were 56.7 and 62.5%, respectively. On the other hand, when Chromobacterium LEE-38 was used, the average removal efficiency was 95.1%, and the removal efficiencies of COD and BOD were 91.3 and 93.2%, respectively.
생물화공 , 에너지 / 환경 : 커들란을 이용한 콘크리트의 유동성 및 강도증가에 관한 연구
신성의(Sung Euy Shin),이중헌(Jung Heon Lee),이기형(Ki Hyeong Rhee) 한국화학공학회 2002 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.40 No.3
One of biopolymer, curdlan, was mixed with concrete to enhance the fluidity and to increase the strength of concrete. Using powder type of curdlan, its effect on fluidity was very low relative to that of welan due to solubility during mixing. To increase the solubility of curdlan, small amount of NaOH was added. As a result, the fluidity of concrete was greatly improved with NaOH addition and the strength of concrete was also improved. The optimal pH of dissolving solution for the best quality concrete was pH 12.7. The pilot scale experiment also showed good performance in the slump value and also in concrete strength. From these experiments, we can approve that curdlan produced from microorganism is a good super plasticizer for concrete mixture.