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 (321Kb)
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23,162,000 Yen (FY1996; 7,127,000 Yen)
The essential data for the life cycle analysis of the emissions of the trace greenhouse gases, such as methane, nitrous oxide, halocarbons, were accumulated and analyzed. The emission factor and amount on nitrous oxide from the production of adipic acid and nitric acid were expenmentally determined to be 1.3(N2O.mol/adipic-acid.mol) and ca. 15Gg・N2O/yr, respectively.
In addition, data bases on the treatment plants for municipal solid waste(MSW), night soil(NS, including sludge) and sewage were compiled. The numbers of plants, the treated volume and the consumption of energy were in 1981fy and 1990fy as follows: [MSW], 1842 and 1780 plants(pt.), 25.9 and 36.5 Mton・MSW, 1,061 and 1,779 GWh, 80 and 78 ML(oil), 3.3 and 2.0 Mm3(town gas), 0.16 and 0.32 Gg(LPG); [NS], 1487 and 1166 pt 20 and 26.9 GL・NS 1440 and 1,400 GWh, 194 and 167 ML(oil), 0.7 and 0.9 Mm3(t. gas), 0.2 and 0.2 Gg(LPG). The main energy sources of these plants are electricity and oil and each amount is approximately 1% of the domestic(home) use [187 TWh(EL), 15 GL(oil)] in 1990 fy in Japan.
The outline of the results of this study is as the followings; 1) the scale of sewage plants does not much influenced the energy use for the treatment 2) the energy used for the bulky waste treatment is mainly composed with electricity which is about 320 GWh to the amount of 3.5 Mton in 1990fy. 3) the expenses for these waste treatment in Japan is also analyzed and the total amount is 90 billion yen in 1981fy and 150 in 1990fy and 4)the total emission of greenhouse gases from the combustion treatments was roughly compared with one from the landfill disposal and the former was about one seventh of emission to the later on the basis of the adjusted radiative forcing.
Emission, Life cycle analysis, Night soil treatment, Adipic acid, CH4, N2O