간행물
大田大學校 環境問題硏究所 論文集 대전대학교 환경문제연구소 논문집 Journal of The Institute of Environmental Studies
- 발행기관 대전대학교 환경문제연구소
- 자료유형 학술지
- 간기 연간
- ISSN 2287-1527 (Print)
- 수록기간 1996 ~ 2016
- 주제분류 공학 > 환경공학 공학 분류의 다른 간행물
- 십진분류KDC 539DDC 628
권호리스트/논문검색
제19호 (2015년 2월) 9건
1.
2015.02
구독 인증기관 무료, 개인회원 유료
4,000원
2.
2015.02
구독 인증기관 무료, 개인회원 유료
4,000원
3.
2015.02
구독 인증기관 무료, 개인회원 유료
Urban areas (residential, commercial, transportation), each of the points during the same rainfall in the same area, this study was evaluated by a survey to find out the basic data and the characteristics of non-point pollution on local characteristics was performed. To evaluate and compare a non-point source pollution concentrations. The conclusion of this study was to know the influence of non-point pollutants in initial rainfall. There was a difference during the same point was compared. The pollution levels were differences in the point-specific characteristics, the same point compared by rainfall when rainfall is low, the contaminant concentrations were high. Finally, when compared to the number of rainy days. The shorter the number of rainy days, the non-point pollutants were high.
4,000원
4.
2015.02
구독 인증기관 무료, 개인회원 유료
This study was carried out to suggest a improvement plan for nuclear administration system in korea by comparing our country with other leading countries for nuclear power policy, current state and plans. It is suggested that NSSC, directly responsible to the prime minster should be upgraded to the president, the independence of NSSC will be maintained. A region safety committee directly responsible to the local government should be established, forge the dualistic regulation framework for mutual help and check, and consolidate the supervision of management for local nuclear power plant. NSSC is in charge of the engineered safety and protection of facilities, disaster protection etc., regional safety committee plays a special role in the safety measures for inhabitants and environmental monitoring
4,300원
5.
2015.02
구독 인증기관 무료, 개인회원 유료
H2S adsorption characteristics of adsorbent made by coffee waste were investigated. For analyses of the manufactured adsorbent, various methods such as scanning electron microscope(SEM), measurements of BET(Brunauer Emmett Teller) surface area, pH, and Iodide adsorption were adopted. As major adsorption characteristics, adsorption equilibrium capacity was measured by using a batch type experimental apparatus for operating variables such as adsorption temperature(25～45℃), adsorbent types. The experimental result showed that the H2S adsorption equilibrium capacity of adsorbent made by coffee waste much more increases with steam activation for the coffee waste.
4,000원
6.
2015.02
구독 인증기관 무료, 개인회원 유료
The contents of this paper is to develop a passive sampler for H2S measurement. When the H2S gas exists in the air, AgNO3 solution coated filter of white used phenomenon which is exchanged with black. If the H2S gas concentration increased, the color of AgNO3 solution coated filter is discolored more black. H2S passive sampler measures the H2S gas concentration by changed color of AgNO3 solution coated filter. The reproducibility of the H2S passive sampler is very stable to within an error 5%RSD. The black color of AgNO3 solution coated filter showed a linear relationship with the H2S gas concentrations. In addition, correlation of the developed CDM and CR-10(Minolta, Japan) showed a high correlation to 0.99. Manufactured H2S passive sampler must be kept refrigerated, stability and reactivity was observed for up to 20 days
4,000원
7.
2015.02
구독 인증기관 무료, 개인회원 유료
This study were performed to control color and satisfy discharge permission standard of effluents operating a small dyeing factory based on a fiber. The color removal efficiency was very high when the injection site of Sodium Hypochlorite(NaOCl) was more discharge site of second sedimentation tank than of first sedimentation tank. Although NaOCl usages was reduced from 1.0 ㎥/day to 0.8 ㎥/day, the removal efficiency of BOD, COD and SS were similar. At the time, the optimal Hydraulic Retention Time(HRT) was calculated to twenty five minute after NaOCl injection until effluent discharged finally. After controlling NaOCl usages and HRT, the effluent quality of BOD, COD, SS, Color and Chloroform were 8.6 mg/L, 24.7 mg/L, 43.3 mg/L, 191.2 degree and 0.346 mg/L, respectively, so that was satisfied to discharge permission standard.
4,000원
8.
2015.02
구독 인증기관 무료, 개인회원 유료
Benzene was oxidized by binary oxidants composed of nitric acid and hydrogen peroxide at 80℃. The product obtained was analyzed with gas chromatograph-mass spectrometer. Eight high value compounds, 2-nitrophenol, 2-chloro-6-nitrophenol, 4-chloro-2- nitrophenol, 2-chloro-4-nitrophenol, 2,4-dinitrophenol, 4-nitrophenol, 2,6-dinitrophenol and 2-chloro-4,6-dinitro-phenol were found, which they have high contents in the range from 4.28% to 32.52%. These compounds are very widely used in organic synthesis. e.g., synthesizing dye, medicines and chemical reagents, pesticide, explosive, polymer, etc.
3,000원
9.
2015.02
구독 인증기관 무료, 개인회원 유료
large amount of effluent water would be produced from low temperature coal catalytic gasification (LTCCG) developed by ENN Co, Ltd, which located at Langfang, Hebei Province. Many phenol homologous compounds and a large amount of other organic compounds were contained in this effluent water, but the overall concentration of the organic compounds was not very high (CODCr value was about several thousands mg/L). Too high cost would occur if treating it with a traditional liquid-liquid extraction process, and it was a waste of resources if the effluent water was directly purified with biochemical technology. In this paper, a decontaminating and recycling technique was developed for an effluent water, and a two-step technique includes flocculation-recycling and ion exchange adsorption-elution processes. By this two-step process, the CODCr value of the final outlet water was decreased to meet the related national standards, and at least 90% of the organics in the effluent water could be recovered.
4,000원
