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김진호,정영헌,조기철,이협희,오광중 부산대학교 환경문제연구소 1998 環境硏究報 Vol.16 No.-
Pyrolysis system will plat a big role on the resource recovery of wastes without secondary pollution problems comparing usual incineration system. Pyrolysis experiments of municipal solid wastes was conducted and the results are as follows. 1) From tile compression test before the pyrolysis, moisture removal was observed from 70% compression and the variation of the removed moisture amount was detected until 80% compression. Over the 80% compression, there was no change. 2) Non-isothermal pyrolysis reaction constant was found out through the experiment. When the increasing rate of temperature varied from 20 to 40 K/min, the activation energy of cellulose and plastic were 100~160 KJ/mol and 192~239KJ/mo1, respectively. The order of reaction was on the range of 1.2~1.8. As the increasing rate of temperature increased, the activation energy was decreased.
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.
[논문]도시생활폐기물과 저품위 무연탄의 혼합 열분해시 반응특성에 관한 연구
박경진,박규만,정영헌,조기철,오광중 부산대학교 환경문제연구소 2004 環境硏究報 Vol.22 No.-
A Study on the Characteristics of the Reaction in Blends of Municipal Solid Wastes with Poor Anthracite on Pyrolysis
오방일,노경환,조기철,정영헌,오광중 부산대학교 환경문제연구소 2004 環境硏究報 Vol.22 No.-
A Study on the Solidification of Soi1 Contaminated by Arsenite