http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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.
박영규 영남대학교 환경문제연구소 2000 環境硏究 Vol.19 No.2
본 논문에서는 염소와 대체소독제로 이산화염소, 오존 및 자외선을 사용할 경우 병원성미생물의 살균, 소독부생성물의 생성 및 세균의 재성장 특성을 문헌자료를 이용하여 비교하였다. 최종 정수 공정으로 완속모래여과 및 막분리 공정을 도입하여 소독을 하지 않고 정수 하는 네덜란드 Leiduin 정수장을 소개하였다. 소독제를 사용하지 않은 위생적으로 안전한 물을 마시고 싶은 것이 사람들의 욕망이다. 이런 욕망을 충족시킬 수 있는 수돗물로는 보호구역이 지정되어 잘 관리하고 있는 지역의 지하수에서 얻을 수 있다. 그러나 인구가 밀집된 대도시 지역은 소독을 하지 않고는 대량의 수돗물을 생산할 수 없는 실정이다. 수질이 좋은 원수를 이용하고 최상의 정수기술과 미생물학적으로나 화학적으로 안전성이 있는 소독제를 사용하는 종합수도시스템을 구축하여 정수하면 안전한 수돗물을 생산할 수 있다. 대체소독제의 개발은 많은 분야의 연구자가 관련되고 있어 폭넓은 상호협력과 사회적인 호응을 얻어야 가능할 것이다. This paper reviews the literature to compare the characteristics of pathogenic microorganism disinfection, disinfection by-products, and bacteria regrowth in the case of using chlorine, chlorine dioxide, ozonation, and ultra violet irradiation as disinfectant. Also, this article illustrates the case of Leiduin water works, which does not disinfect water by treating the slow sand filtration or the membrane separation as the final purification process. It is human being's desire to drink the safety drinking water that does not contain disinfectant. The drinking water that satisfies this desire can be obtained from ground water in the region designated as protection area. However, the densely-populated metropolitan area produces large amount of tap water inevitably treated with disinfectant. The safety drinking water can be obtained by using water resource with good quality and by establishing the total water supply system, which uses microbiologically and chemically safe disinfectant and adopts the most up-dated purification technology that removes pathogenic microorganism sand harmful compounds and prevents bacteria regrowth in the water distribution system. Extensive cooperation and social support are necessary for the development of alternative disinfectants, which requires substantial interdisciplinary researches. Keywords : disinfection, alternative disinfectant, disinfection by-products, bacteria regrowth, total water supply system