メタン発酵における各種化合物の分解と阻害 : (第1報)炭水化物, アルコール類について

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In the planning and operation of a plant for the biological treatment of industrial waste, it is necessary to know the effects of various substances on microorganisms. From poin of view, the biodegradability and toxicity of a wide range of organic and inorganic compounds in anaerobic digestion were studied. In this paper, the gas production and the minimum toxic concentrations of carbohydrates and alcohols were investigated. Studies were carried out by the thermophilic digestion (54℃). Seed used for these experiments had been prepared in a synthetic medium so that it held constant in amount and quality. 5 ml of a 5 % solution of various compounds was added to each digestor containing 50b ml of seeds, and the gas produced by the addition of the samples were measured in the batch-wise process. Carbohydrates were degraded, producing 500〜700 ml of gas per gram of sample after about 2 days as shown in Fig. 3. Lower saturated alcohols produced 700〜1,200 ml of gas per gram of sample after 3 days, but higher saturated alcohols and unsutrated alcohols inhibited gas production (Fig. 4). The minimum toxic concentrations of alcohols for methane fermentation were 1,000 ppm in hexyl alc., 500 ppm in heptyl alc., 200 ppm in octyl alc., 100 ppm in allyl alc., 500 ppm in crotonyl alc. and 20 ppm in propargyl alc. respectively. These alcohols inhibited gas production more significantly than the acid formation in methane fermentation.
社団法人日本生物工学会の論文
1968-10-25

メタン発酵における各種化合物の分解と阻害 : (第1報)炭水化物, アルコール類について

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