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http://dx.doi.org/10.5389/KSAE.2008.50.4.059

Operational Strategy of Anaerobic Digesters Considering Energy Balance  

Hong, Seong-Gu (한경대학교 지역자원시스템공학과)
Kwun, Soon-Kuk (한국과학기술한림원)
Publication Information
Journal of The Korean Society of Agricultural Engineers / v.50, no.4, 2008 , pp. 59-66 More about this Journal
Abstract
Anaerobic digestion system is getting more attractive in that it produces biogas in the process of organic waste stabilization. Net energy production is important when biogas production is concerned. In this study, net energy production was evaluated with respect to biogas production and heat losses in a hypothetical digester. Under the condition of digester operation with slurry inflow of 5% of TS, additional fuel is required to maintain digester temperature during the winder season. Substrate therefore, needs to have higher VS contents through co-digestion of silage or food waste that has greater values of methane production rate. Heating input slurry is important in cold season, which covers over 80% of heating requirement. Heat recovery from digestate is valuable to reduce the use of biogas for heating. It seems desirable to minimize slurry inflow when temperature is very low. Psychrophilic digestion may be a feasible option for reducing heating requirement.
Keywords
Anaerobic digestion; Substrate; Energy balance; Net energy Production;
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1 양상현, 이정수, 2004, 용폐수처리와 관리 - IV 혐기성처리.안정화지와 라군.질소와 인의 생물학적 제거. pp.43-44
2 한선기, 2001, Bioenergy Generation and Leachate Treatment by Anaerobic Digestion of Organic Waste, 한국과학기술원. 토목공학 과, 대전
3 Ghafoori, E. & P. C. Flynn, 2007, Optimizing the Size of Anaerobic Digesters. Transactions of the ASABE, 50 (3), pp.1029-1036   DOI
4 Ghosh, S., 1981, Net Energy Production in Anaerobic Digestion, Institute of Gas Technology, Orlando, Fl
5 산업자원부, 2002, 슬러지/음식물 통합소화에 의한 바이오가스 이용기술 실용화 연구
6 Chen, Y. R., 1983, Biogas digester design. in Fuel Gas Systems edited by Donald L. Wise, CRC Press, pp. 23-60
7 Green Box Systems Group(GBSG), 2000, Biogas/ Anaerobic digestion for Fuel cell applications. http://www.esru.strath.ac.uk
8 GS(Deutsche Gesellshaft für Sonnenene rgie) & Ecofys, 2004, Planning and Installing Bioenergy Systems : A guide for installers, Architects and Engineers, Earthscan
9 Chynoweth, D. P., J. M. Owens & R. Lergrand, 2001, Renewable methane from anaerobic digestion of biomass. Renewable Energy, 22, pp.1-8   DOI   ScienceOn
10 asse, D. I., R. L. Droste, K. Kennedy, & N. K. Patny, 1996, Operation Strategies for Psychrophilc Anaerobic Digestion Swine Manure Slurry in Sequencing Batch Reactors. Canadian Journal of Civil Engineering 23, pp.1285-1294   DOI   ScienceOn
11 농업과학기술원, 2002, 가축분뇨 처리를 위한 Biogas 이용기술 개발, 수원, 농촌진흥청
12 권순국, 홍성구, 김현욱, 2007, 음식물쓰레기 실용화방안 연구, 농촌진흥청
13 Srivastava, V. J., 1987, Net Energy. in Anaerobic Digestion of Biomass, edited by D. P. Chynoweth & R. Isaacson, London, New York. Elsevier Applied Science, pp.219-230
14 윤진섭, 2007, 현대.대우건설 축산분뇨에 눈독들이는 이유, http://news.hankooki.com