Development of the evaluating method for utilizing biomass in Miyako-island, [Japan]
2006
Kanri, Y.(National Inst. for Rural Engineering, Tsukuba, Ibaraki (Japan)) | Shinogi, Y.
Three research for developing the evaluation method of biomass utilization in the Miyako-island were conducted. 1) The simulator which estimates the environmental impacts of the agriculture in Miyako-island was developed. This simulator was developed mainly as the tool of assessing the biomass utilization. Moreover this is expected to be used as the tool of making the policy of environmental agriculture and the tool of environmental education. The main problems of the simulator are how to integrate the environmental impacts properly and to improve the accuracy of emission factors. 2) In order to develop the evaluation method for biomass utilization in each groundwater basin, the nitrogen burden of each basin was calculated. The nitrogen management at each groundwater basin is rational from environmental aspects. Planning and evaluating the biomass utilization system based on the nitrogen of each groundwater basin is effective. 3) In order to develop the evaluation method with GIS, the amount of CO2 emission for collecting the cattle manure were calculated. Targeting Ueno village, six scenarios which were different from the scale of the biomass conversion facilities and the collecting area were examined. If the facility were the composting facility, the amount of the CO2 emission caused by transportation of bagasse couldn't be omitted. Therefore, from a viewpoint of LCA (Life Cycle Assessment), it is necessary to examine not only the CO2 emission of the transportation stage but also conversion and use stage. The biomass evaluation method would be established by integrating these three evaluation methods and merging them organically.
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