下水処理汚泥の嫌気性消化におけるキラヤサポニンの添加効果

概要

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Sludge waste exhausted from sewerage disposal plant systems is a serious public problem needed to be solved at present. In this study, a laboratory test regarding the aerohobic-digestion of concentrate sludge from the Numazu city sewerage disposal plant was carried out to determine the effective condition of Quillaja saponin addition on digest gas evolution. An extract called Econin is extracted from the bark of Quillaja Saponaria Mol, a South America tree. Econin was purified by two separation methods, solvent extraction and column chromatography. The isolated Quillaja Saponin was examined by IR and NMR analysis to estimate the chemical structure. It was confirmed that the total volume of digest gas and the evolution velocity increased several times at the Quillaja saponin concentration of 10〜20ppm in the mediate temperature of 37℃. However, no effective addition of Quillaja saponin was recognized under other temperature conditions which varied from 30 to 55℃. The effectiveness of Quillaja saponin as a microbeactive assistant agent is discussed.
東海大学の論文
2000-03-10