Evaluation of performance and costs of various biomass conversion technologies
2006
Yuyama, Y.(National Inst. for Rural Engineering, Tsukuba, Ibaraki (Japan)) | Ikumura, T. | Ohara, A. | Kobayashi, H. | Nakamura, M.
Adequate biomass conversion technology must be adopted to promote sound biomass utilization system in a region. Characteristics of various feedstock biomass resources differ widely in terms of water content, decomposability, content of carbon and nitrogen. Basically, thermo conversion technologies and biological conversion technologies should be chosen according to the water content of biomass. We evaluated the performance and costs of various biomass conversion technologies based on material and energy balance. Technologies such as composting, methane fermentation, carbonization, processing to feed, conversion to BDF, direct burning, gasification, conversion to RDF, were focused on. Objective biomass included livestock wastes, food wastes, rice husks, wood residues, sewage sludge and others. Material and energy balance was estimated considering feasible conversion capacity within the range from 5 to 50 tons daily. The income and expenditures through construction and operation of biomass conversion plants for 20 years was accounted for with conversion capacities of 25, 50 and 100 ton/day. Designers of biomass utilization system can effectively use this information to diagnose plans in a region at the beginning stages.
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