Mesophilic and Thermophilic Methane Fermentation of Agro-Wastes and Grasses

概要

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Methane fermentation of agro-wastes and grasses using acclimated sludges derived from mud collected from hen, goose, and Indian cow ranges was studies under mesophilic and thermophilic conditions. Alkaline pretreatment of the substrates improved the gas evolution, particularly under thermophilic conditions. The fermentation of rice straw pretreated with 0.3 N NaOH yielded 560 ml of gas containing 67% CH_4 (v/v) per gram of the substrate after 5 day's incubation at 55℃, while only 450 ml of gas containing 60% CH_4 was evolved per gram of the substrate after 7 days' incubation at 37℃. However, gas evolution from Italian ryegrass was delayed under thermophilic conditions. Overall, 430-680 ml of gas containing over 50% CH_4 was obtained from the thermophilic methane fermentation by Indian cow range mud sludge of various agro-wastes and grasses after 3-5 days' incubation.
公益社団法人日本生物工学会の論文
1985-02-25