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혐기성 소화-고온 호기법에 의한 유기성폐기물의 처리와 생성열의 재활용 검토
양재경,최경민,Yang, Jae-Kyung,Choi, Kyung-Min 유기성자원학회 2001 유기물자원화 Vol.9 No.1
본 연구에서는 유기성 폐기물의 분해시 발생되는 열을 재활용하고, 혐기성 소화액의 퇴비화를 위한 혐기성 소화 - 고온 호기법(Anaerobic Digestion-Thermophilic oxic process, ADTOP)을 고안하고, 유기물 분해와 수분의 증발 그리고 생성열의 적용성을 검토하였다. 유기성 폐기물인 중화요리 잔반은 TOP에 의해 완전처리가 가능하며, 최대 용적부하는 $55kg/m^3{\cdot}d$, 투입된 수분은 거의 완전히 증발되었으며 탄소수지에 의한 탄소성 유기물의 이산화탄소 전환율은 90.5%이었다. 고온 혐기성 소화를 위한 적정온도(약$55^{\circ}C$)를 유지하기 위한 최소용적부하는 $45.0kg/m^3{\cdot}d$이었다. 혐기성 소화조의 온도는 수리학적 체류시간이 짧아짐에 따라 지수적 온도강하를 나타내었으며 고온 혐기성소화를 위한 최소 HRT는 약 10일 정도로 판단된다. 따라서 고온 호기법을 이용한 유기성폐기물의 처리시 발생되는 열에너지는 혐기성 소화와 같은 체류시간이 비교적 긴 공정에서 효과적일 것으로 판단된다. 혐기조의 유기물 부하 $1.1kg-COD/m^3{\cdot}d$, 고온 호기조 유기물의 투입량 $50kg/m^3$, 공기 유입량 $250{\ell}/m^3{\cdot}min$의 조건에서 혐기성 소화효율은 90% 이상으로 나타났다. Anaerobic Digestion - Thermophilic Oxic Process(ADTOP) has been known to be one way reducing and composting of organic wastes without draining or forming excess sludge. It could be completely performed by the evaporation of water using the bio-energy from the microbial degradation of organic. In the present study the complete treatment of Chinese restaurant wastes was conducted and utility of bio-energy produced from the ADTOP was estimated. Base on results, it could be concluded as follows; 1) chinese restaurant wastes could be completely treated using the TOP without draining or excess sludge. Maximum volumetric loading rate was determined as $55.0kg-garbage/m^3$. Input water was almostly evaporated and 90.5% of carboneous organic wastes was conversed to carbondioxide. 2)The optimum volumetric loading rate which is acceptable to maintain over $55^{\circ}C$ in the anaerobic digester was determined as $45kg-garbage/m^3{\cdot}d$. 3) The optimum HRT was at least over 10 days in order to maintain about $50^{\circ}C$ in the anaerobic digester using bio-energy produced from TOP. Therefore the utilization of bio-energy produced from TOP could be used in the process which had long HRT such as the anaerobic digestion. 4) The efficiency of anaerobic digester rate were over 90% by the ADTOP under the organic loading rate of $1.1kg-COD/m^3{\cdot}d$, 50kg-Chinese restaurant garbage and $250{\ell}/m^3{\cdot}min$ of the aeration rate.
고온 호기법을 이용한 Poly Aluminum Chloride에 의해 응집된 조류의 분해특성
양재경(Jae-Kyung Yang),최경민(Kyung- Min Choi) 유기성자원학회 1999 유기물자원화 Vol.7 No.1
공기유입속도가 2171 . m-3• min-1 이었을 경우, 고온 · 호기조를 이용하여 PAC로 응집 , 탈수된 조류의 분해 특성을 관찰한 결과 다음과 같이 요약할 수 있다.10% 폐 식용유의 혼합조건이 본 연구에서 최적 조건으로 용도는 55"C 이상을 나타내었고, 수분은 55%를 일정하게 유지하였으며. COz의 농도는 최고 3.7%. 투입 탄소량의 92%가 CO2-C로 변환하였다. 적정한 폐식용유의 혼합은 미생물의 활동을 활발하게 하였지만 과도한 혼합은수분증발로건조상태로되었으며 오히려 분해 활성에 저해 영향을주었다. 처리가종료된 담체는고농도의 알루미늄이 축적되어 있으므로 별도의 처리가요구된다. The biodegradation of algae coagulated with poly aluminum chlorideCPAC) was investigated by using the thermophilic oxic process. The compositions of coagulated a1gae were 83.5% of water content. 24.6% of ash. 32% of organic carbon with in tota1 solid. respectively. In present study. food waste oil was used for the increment of ca10rie of mixtures in order to accelate the microbia1 activity. As a resu1t. the maximum temperature of mixtures was higher than 50"C when the mi피ng ratio of food oil was over 10%. However the temperature indicated the lower than 50"C when conditions of no mi잉ng with waste food 이1. and 5% of mixing ratio. Therefore. the optimum condition was 10% of the mixing ration at 217 l . m-3• min-1 of air supply rate. The conversion efficiency of carbon was highest as 92% at the optimum condition. And then water was eva1uated from imxture without accumulation at 10% of mixing ratio. The thermophilic oxic process well conducted that is good process for the treatment of waste a1gae without effluents however it has to consider the retreatment of accumu1ated aluminum in the reactor.
양재경(Jae Kyung Yang),강병국(Byeng Kuk Gang),김종만(Jong Man Kim),박용구(Young Goo Park),최명석(Myung Suk Choi) 한국차학회 2000 한국차학회지 Vol.6 No.3
Physico-chemical characteristics and thier chemical compositions of seed oil of Camellia sinensis L. were determined by various analysis methods. Physico-chemical characteristics of the extracted oil from the fresh seeds showed specific gravity(0.922), refraction index(1.467), acid value(10.2), saponification number(187.9), and iodine value(92.8). Neutral lipid(95.6%) in fresh seed oil was identified as major components, followed by glycolipid(3.5%) and phospholipid(0.9%). According to GC analysis, 9 fatty acids were present in the seed oil. Among fatty acids, most predominant fatty acids are oleic acid(48.5%) and linoleic acid(25.6%). However, the fatty acid contents of seeds oil somewhat varied with its storage periods. Composition of fatty acids from lipid fractions which isolated on silica open column was investigated. Major fatty acids in three lipid fractions were oleic acid and linoleic acid. The fatty acids contents of fresh seed derived each lipid fraction were generally higher compared to storage seed oil. In this results, seed oils of Camellia sinensis L. can be applied as sources for cosmetics, detergents and a few pharmaceuticals.