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홍순석(Soon-Seok Hong),박상전(Sang-Jeon Park),홍종준(Chong-Joon Hong) 유기성자원학회 1998 유기물자원화 Vol.6 No.1
농 • 축 · 수산 유통집하장에서 발생하는 유기질 폐기물의 메단 전환 기초 연구로서 실험실 규모로 수행하였다. 선발된 Run B 시료는 분석 결과 C/N Ratio는 18.41 , TCOD는 168, 960 mg/L의 것이 얻어졌다. 생화학적 메탄 생산성 실험에서 이론 생산량은 313. 6 mg/L VS added 이었고 실질적인 생산량은 234.2 mg/L VS added로 혐기성소화에 의한 74%의 메단 전환이 얼어났으며,반응속도론적고찰에서 속도 상수는 0.2476d- 1 이었다. 그리고 3단 여과막 충진형 반응기는 공시험 반응기보다 메탄함량은 16% 높고, TCOD 벚 SCOD는 각각 44.7% 벚 44.2%가 감소되었다. A fundamental study on methane conversion for the collection organic wastes of agriculture , forestry and fishers was performed in a laboratory scale. As a result, selected Run B sample were obtained 18.41 C/N Ratio and 168.96 mg/L TCOD; Under the biochemical methane potential test , theoretical and actual methane generation was 313.6 mg/L VS added and 234.2 mg/L VS added, respectively; However, methane conversion from Run B were occurred 74% by anaerobic digestion. By the first order reaction kinetics, kinetic constant were 0.2476 d-1 for Run B. Three steps fill-up fi 1ter reactor was evaluated methane content 16% up to promote than blank reactor; TCOD and SCOD have reduced 44.7% and 44.2%, respectively.
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洪鐘俊 건국대학교 1986 論文集 Vol.23 No.1
The purpose of this study is to investigate the dynamometric conditions of microbial fermentation, and to establish the optimum drive conditions for the efficient operation of the mixed small scale single digester. In this study, the effects of mixing upon fermentation appeared to be high; the contact rate between the substrates and microorganisms was increased, precipitation of Insoluble solids was prevented, the discharge rate of gases staying between substrates was increased, and stable was production was facilitated consequently. The results of the study can be described as follows (A) Under the condition of mixed digestion system, some major factors such as concentration of methane gas, pH of liquid in the digester, and gas production rate, etc, were extensivly observed to establish the optimum drive conditions having a continuous feeding of 1.44 kg.V.S./m3/day of raw material from 16th day of the initial fermentation, and production of 0.79m3/m3/day of biogas containing 63% of methane. (B) The normal methane fermentation was able to be maintained when the concentration of waste in the digester indicated S=7.5gr/m3, the total number of microorganisms per volume unit of digester reached dx/dt =427.128(mass/vol-time), and the removal rate of organic material showed 40.6 percent. At this stage the average retention time of microorganisms in the digester was calculated as 8.6 days. According to the review made above, it is therefore proposed to drive the digester with substrate retention time of 10 days.
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洪鍾俊 건국대학교 1985 論文集 Vol.20 No.1
The amount of animal wastes producted by a Korean Livestock farm has increased greatly year by year just as the stale of livestock farms has become larger with greater income. The anaerobic digestion of these wastes is essential for pollution control. Because our country has a few natural resources, it is also urgent to develop methane gas fuel from the process. This study aims at designing an economical method of producing a constant amount of biogas during the harsh winter season. Applying the simple tank fermentation system which is easily accessible to a livestock raising farm, the optimum fermentation conditions are concluded as follows. 1. Utilizing the compost heating system without any other heating source in winter, the fermentation temperature of the digester can be controlled at on around temperature of 35℃, and biogas can be yielded all the year round. 2. The optimum hydrogen ion concentration (pH= 7.0∼7.2) and biogas composition (CH4 =60∼63%) are obtained for the organic material loading. 3. Through observing the acid fermentation, acid reduction, and alkali fermentation phases by the symbiotic fungus in pig manure, the proper time to control the environmental conditions can be determined. 4. Analyzing comparatively the heat loss at three places in the compost heating system, the corrective measures to prevent heat loss on Q1〉Q3〉Q2 were found.
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