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Recycling of surfur using chelate absorption reactor
박영규,박영규 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
Several experiments have done to investigate the removal of hydrogen sulfide(H2S) synthetic gas from biogas streams by means of chemical absorption and chemical reaction with 0.1M - 1M Fe/EDTA solution. The hydrogen sulfide of biogas was bubbled through an gas-lift column with Fe/EDTA resulting in the formation of sulfur particles. Wide range of optimal operating conditions were tested for both Fe/EDTA solution and the biogas, and the optimal ratio of Fe/EDTA concentration for efficient removal of hydrogen sulfide was found. The roles of Fe/EDTA were studied to enhance the removal efficiency of hydrogen sulfide because of oxidizing by Fe+3/EDTA. The motivation of this investigation is first to explore the feasibility of enhancing the toxic gas treatment in the biogas facility. The biogas purification strategy affords many advantages. For instance, the process can be performed under mild environmental conditions and at low temperature, and it removes hydrogen sulfide selectively. The end product of separation is elemental sulfur, which is a stable material that can be easily disposed of with minor potential for further pollution. The process to address over 90% removal efficiency of hydrogen sulfide does offer considerable advantages unrealized.
Reduction of H2S in anaerobic digestion of sewage wastes
박영규,박영규 한국공업화학회 2015 한국공업화학회 연구논문 초록집 Vol.2015 No.0
In order to make the best biogas production in the anaerobic fermentation, it is important to be able to compare the raw input materials on the basis of their sustainability, which may include a variety of environmental indicators. This study examined the comparative sustainability of renewable technologies in terms of their life cycle CO2 emissions andembodied energy, using life cycle analysis. The comparative results showed that power generation of bioenergy was associated with 0.96 kWh/m3 biogas and the reduction of CO2 emission is 2.1kg of CO2/kg Biomass. Other environmental indicators should be applied to gain a complete picture of the technologies studied. The generation of electricity is 2.07 kWh/m3 biogas in comparison with theoretical results of 3.09 kWh/m3 (efficiency of generator is 30%) based on the assumption of the removal efficiency 95% of CO2, methane conversion 100%, efficiency of generator 30%. Final results are the production of methane: 250 m3/day, production of electricity: 770kWh/day when used 5m3/day of waste.
艾灸刺戟이 D-Galactosamine投與 白鼠 肝損傷에 미치는 影響
朴永奎 圓光大學校大學院 1985 學位論叢 Vol.14-2 No.-
The effectiveness of moxibustion treatment on D-galactosamine induced liver injury was examined in albino rats. After the stimulation of Shin-Su, Gan-Su and Joong-Wan loci several enzyme activities, and thymol turbidity test, the changes of albumin, total protein and total cholesterol contents were investigated in serum. l. As compared with control group the activities of GOT, GPT, ALP, LDH, a-HBD and TTT, the levels of total cholesterol in serum were significantly decreased by the moxibustion stimulation of Shin-Su, Gan-Su and Joong-Wan loci. And the contents of albumin, total protein in serum were not changed remarkably. 2. The maximum effectiveness of moxibustion stimulation were showed in 3rd day, effects of Gan-Su, Shin-Su and Joong-Wan treatment and its effect appeared Gan-Su, Shin-Su and Joong-Wan in order. Based on the above results it is suggested that moxibustion treatment shorten recovery of the hepatic function in D-galactosamine intoxicated Iiver.
박영규,Park Young-Gyu 한국전기화학회 1998 한국전기화학회지 Vol.1 No.1
전기장이 충전층내 거대 이온성분자체의 분리를 위한 이론적 인 모델이 수행되었다 충전층내 여과재에서 전기적인 대류속도의 효과는 분자량이 큰 이온성 물질을 분리하기 위해서는 효과적이다. 이유는 전기장하에 거대이온성 분자체는 전기의 방향으로 빠르게 이온성분자체가 곧게 뻗는 현상때문이다. 이러한 분자체의 거동현상은 여과재내에 대류속도가 전기힘과 분자크기에 따라 대류속도가 다르기 나타나기 때문에 이들에 대한 연구는 충전층내에서 분자체를 분리하는데 도움이 된다 본 논문에서 여과재시스템내에서 이론분리는 확산에 대한 대류속도의 비$(Pe_t/Pe_g)$를 이용하여 예측하였으며 본 논문에서 얻어진 결과는 여과시스템을 설계하고 응용하는데 유효하게 적용될 것이며 이론적인 근거는 연산자 이론과 Reptation이론이 적용되였다. Theoretical model has been derived in the electrophoretic separation system where an electric potential is applied to the system in the axial direction. The effect of electrophoretic convection in the polymeric media is significantly contributed to separate large ionic-molecules because the conformation of large ionic-molecule quickly orients in the field direction. The dependence of the transport in the polymeric media upon field intensity and molecular size aids in understanding the transport of large ionic-molecule in the system, since the convective velocity of large ionic-molecule is accelerated inside a porous material. The separation of two different large ionic-molecules is predicted with a value of $(Pe_t/Pe_g)$ of individual large ionic-molecule using an operator and the reptation theories.