ペーパースラッジの滅菌方法に関する予備的研究

概要

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The sterilization method for paper sludge (PS) to use as biomass energy was examined. Two kinds of bacterial colonies with different shapes were obtained from PS, and they were negative in Gram staining. It was examined the effects of some chemical processings (treatment with ethanol, sodium hypochlorite, or hydrogen peroxide) or some physical processings (the autoclaving, the UV irradiation, the supersonic treatment, and the microwave irradiation) on PS itself and /or its bacteria. The treatment with sodium hypochlorite or hydrogen peroxide, and the autoclaving, the UV irradiation, or the supersonic treatment were effective for the sterilization of PS. Especially, the effects of the treatment with sodium hypochlorite, the autoclaving, and the supersonic treatment were strong. However, the problem of the residual substances is expected in the treatment with a large amount of sodium hypochlorite. The problem of cost is also expected as for the physical processings. It is necessary to examine more convenient and cheaper methods for sterilizing PS.
2010-01-31