炭化した製紙スラッジ(CPS)の炭素固定量の評価

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In this study, we estimated the amount of carbon storage in carbonized paper sludge (CPS) by considering the carbonization treatment process to paper sludge (PS) as Carbon Capture and Storage (CCS) technology. To estimate the amount of carbon storage, we collected the CPS from PS cooperative treatment factory in Fuji city of Shizuoka pref., and analyzed by XRD, XRF and TG/DTA. The carbonaceous material in CPS was classified by chemical fractionation treatment using soil science method. Especially, the carbon content ratios of CPS were analyzed by CHNS/O Analyzer. The classifying results show that the almost all the carbonaceous material in CPS could be considered "humic material" that were chemically stable. From the analyzing results, it was clear that the total amount of CO_2 was equal to 19.6t-CO_2 form the daily carbonization treatment process. On the other hand, the daily carbonization treatment process needed 5,500m^3 of LNG and exhausting gas treatment required 1,016kWh of electricity. From these processes, the 12.5t-CO_2 emission was estimated. The total amount of carbon storage in the daily carbonization treatment process was calculated at 7.1t-CO_2, and it was equal to 158kg-CO_2 in It CPS. Applying the carbonization process enables to reduce 118.9kg-CO_2 in It dried PS as compared to applying normal incineration process. The results show that the carbonization treatment process can be used as a CCS technology in the limited usage of none incineration treatments such as returning to the soil.
2009-08-17

炭化した製紙スラッジ(CPS)の炭素固定量の評価

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