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1
Effect of Pig Feces and Pig Waste Mixture Compositions on Bio-oil Production by Pyrolysis Process

Zhu Kun,신중두,백이,최홍림 유기성자원학회 2009 유기물자원화 Vol.17 No.4
- 원문보기
Pyrolysis is recently used as one of alternative methods of animal waste treatment. In this study bio-oil was produced at 550℃ in an auger reactor through pyrolysis process. Two pig waste mixtures were used, pig feces mixed with rice husks and pig feces mixed with sawdust. The main compositions of hemicellulose, lignin, cellulose, protein, and fat were analyzed chemically. Based on the main composition results obtained, the contents of holocellulose (the sum of hemicellulose and cellulose) and lignin had a significant positive effect on bio-oil production, and there was a significant negative effect of ash content on bio-oil yield. The interactions between the different feedstocks were evaluated, and it was concluded that the interaction between pig feces and rice husks was minimal, whereas the interaction between pig feces and sawdust was significant.
2
돈분을 이용한 열분해공정 바이오오일의 특성

Zhu Kun,최홍림(Hong L. Choi) 유기성자원학회 2008 유기물자원화 Vol.16 No.4
- 원문보기
본 연구에서는 돈분을 이용한 열분해공정(pyrolysis)에 의한 바이오오일의 특성을 분석하여 보고하였다. 기본적으로 bio-oil 생산을 위한 pilot auger형 반응기는 400°C∼600°C의 고온을 유지하였다. 바이오오일의 특성은 수질분석, 열량가, 원소분석, GC/MS를 이용한 마이오일의 원소, 1H NMR분광기에 의한 functional group 구명 등을 포함한다. 돈분시료를 이용한 바이오오일 생산량은 pilot auger 반응기의 온도가 550°C일 때 바이오일 생산율은 질량의 21%로서 최대를 나타내었다. 이 결과는 본 연구에서 연속 auger형 반응기의 이송이 편리하고 bio-oil 생산량이 적지 않아 대체 축분처리기술의 하나로 검토할 수 있음을 보였다. 그러나 auger 반응기의 원료로의 열전도가 유동상반응조보다 낮아서 향후 이를 개선하기 위한 연구가 성공적으로 수행되면 바이오오일 생산량을 제고시킬 수 있을것으로 판단된다. The characteristics of the bio-oil produced by the pyrolysis process with pig feces was investigated in this paper. The continuous auger-type reactor produced bio-oil was maintained at the temperature range of 400 to 600°C, which was higher than a typical that in a conventional pyrolysis system. The pig feces was used as the feedstock. The bio-oil and its compositions were characterized by water analysis, heating values, elemental analysis, bio-oil compounds, by Gas Chromatography/Mass Spectrometry (GC/MS), and functional group by 1H NMR spectroscopy. It was found that the maximum bio-oil yields of 21% w.t. was achieved at 550°C. This result suggested that this auger reactor might be a potential technology for livestock waste treatment to produce bio-oil because it is able to be improved to reach higher efficiency of biooil production in further study. The pyrolysis system reported herein had low heat transfer into the feedstock in the auger reactor so that it needs improve the heat conduction rate of the system in further study.
3
Kinetics of Chemical Properties and Microbial Quantity in Soil Amended with Raw and Processed Pig Slurry

Suresh, A.,Choi, Hong L.,Zhukun, Zhukun Asian Australasian Association of Animal Productio 2009 Animal Bioscience Vol.22 No.5
- 원문보기 2
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  KCI
Pig slurry is a good soil amendment not only because of its high organic matter content, but also because of its ability to provide various nutrients. The objective of this study was to estimate the influence of raw and processed pig slurry application on pot soil over chemical fertilizer and non-amended control soil. Change in the chemical parameters (pH, organic matter (OM), organic carbon (OC), macro and micronutrients) and microbial mass of the treated soils were monitored over 30 to 90 days. Pot soil was treated with the recommended dose of pig slurry and chemical fertilizer, and was sampled after 30, 60 and 90 days of incubation. The least significanct difference (p<0.05) was observed on Fe, Cu, Zn, available P and K between treatments. All treatments increased N, P and K content and microbial mass of soil over control soil. Interestingly, no significant effects were detected on OM, OC, total bacteria, actinomycetes and fungi mass in soil irrespective of treatments given. However fungal and bacterial counts, as well as available nutrients, were found to be higher in processed slurry (PS)-treated soil compared to other soils. In general a significant correlation existed between the fungal count and OM, OC, Zn, T Kjeldahl N (TKN), available P and K of soil. A strong negative correlation was observed between pH and Fe in soil. This study clearly demonstrated that the use of processed manure as a fertilizer could be a key for sustainable livestock agriculture.