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알카리금속염을 첨착시킨 활성탄을 이용한 CO_2 제어에 관한 흡착특성
오광중,심언봉,최원준,조기철 부산대학교 환경문제연구소 2001 環境硏究報 Vol.19 No.-
Na_2CO_3,K_2CO_3, Li_2CO_3-impregnated activated carbon which had a longer breakthrough time and more enhanced adsorption capacity than the activated carbon was tested with isothermal adsorption and tested for the CO_2 adsorption amount varied with temperature, CO_2 inlet concentration, flow rate, aspect ratio. As a result, when Langmuir, Freundlich and Dubinin-Polanyi adsorption isotherms were used for linear regression of isothermal adsorption data, Langmuir adsorption isothermal was the most suitable. And, The optical condition for Na_2CO_3 and K_2CO_3 impregnated activated carbon make-up was 1N and Li_2CO_3 was 0.1N. It could be concluded that adsorption capacity was decreased with adsorption temperature and increased gas concentration. When the aspect ratio(L/D) was varied 0.5, 1.0, and 2.0, the significant drop of adsorption amount was observed below 1.0 and breakthrough time was shortened with gas flow rate.
창원시 주변 토양과 가로수 중 중금속 농도에 관한 연구
김영식,조성근,심언봉,김기선 한국보건교육건강증진학회 2007 한국보건교육·건강증진학회 학술대회 발표논문집 Vol.- No.-
본 연구는 2007년 5월부터 2007년 6월까지 창원시 학교, 주거, 공업, 상업지역 인근의 토양과 식물체를 채취하여 중금속 농도와 지역별 토양오염지수를 산정하였다. 창원시 각 지역별 토양과 식물체중 중 중금속 농도는 공업지역이 가장 높게 나타났으며, 학교, 주거 그리고 상업지역 순으로 나타났다. 창원시내 중금속 오염지수는 대체적으로 아주 낮은 값을 보이고 있으며, 전지역 모두 l등급으로 아주 건전한 토양으로 평가되었다.
飮食物쓰레기의 效率的 管理를 위한 物理的 特性 및 處理
권효정,정영헌,김임경,심언봉,오광중 부산대학교 환경문제연구소 2003 環境硏究報 Vol.21 No.-
This study was conducted to manage food wastes in Korea efficiently. We carried out an experiments on food wastes generated from Yeonjae gu, Pusan as a representative boundary according to the measurement of apparent density, generation quantity, physical characteristics, proximate analysis, and elemental analysis as well as drying and carbonizing, and also tested the hazardous materials in fertilizer and compost from public and private recycling center in operation. The purposes of this study are to investigate current status of food wastes recycling methods and facilities, to examine the fuelization of food wastes, and to suggest the cost effective food wastes treatment plans. Based on the results of the analysis of apparent density and water content in food wastes, it was revealed that the apparent density of food wastes was in inverse proportion to the water content. The water content of food wastes was highly influenced by the fruit and vegetables such as watermelons. These results indicate that the food wastes with about 75 ~80wt% initial moisture content should be reduced under 70wt% moisture content by drying process pier to throwing away. Comparing the heating values of the food wastes which were calculated by Dulong's equation and Steuer's equation it was revealed that Steuer's equation(HHV 5,186 kcal/kg, LHV 880 kcal/kg) was more compatible than Dulong's equation(HHV 4,676 kcal/kg, LHV 330 kcal/kg) because the results of proximate analysis for the food wastes were very similar to those of sewage sludges. Additionally, to reduce water contents of food wastes under 60wt% as acceptable water contents for fuelization, it was also found that blending with 25wt% chars made from food wastes was more efficient than the drying of food wastes itself at 105°C, 45minutes in view of completion time. Furthermore, these chars generated from food wastes (about LHV 6,608 kcal/kg) comparable to commercial charcoal(LHV 7,134 kcal/kg) generated from oak trees and lower ash contents(under 15wt% of chars) than those.