下水汚泥のコンポスト化に伴う抽出液組成の変化 : 下水汚泥のコンポスト化の指標に関する研究(第2報)

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Composting of sewage sludge was carried out with various bulking agents and temperatures. Liquid chromatography using a gel-type-column was carried out on water extracts from the various composts and changes of chromatograms with the fermentation time were examined to determine effective parameters for a measure of compost maturity.The results can be summarized as follows.1) Concentrations of components in water extracts remarkably changed as the fermentation proceeded. The peak ratios, υ_<UV> and υ_<RI>, defined by (peak height of the low molecular weight component)/(peak height of the component of a molecular weight around 6000) of UV absorbance and refractive index, respectively, decreased and became almost zero when the carbon conversion exceeded 30%.2) In the fermentation using raw materials of large particle size, υ_<RI> increased at the initial stage, differently from in experiments under good aerobic conditions, and then decreased. The variation of υ_<RI> is useful as a measure of aerobic conditions in fermentations.3) υ_<UT> and υ_<RI> are useful parameters as a measure of compost maturity.
社団法人日本生物工学会の論文
1983-03-25