| 摘要 |
<p>PURPOSE:To ferment in a low-temp. region with reduced energy by using a nonoceanic low-temp. ferment bacterium which is newly separated and belonging to Methanococcus. CONSTITUTION:A nonoceanic low-temp. ferment bacterium which is newly separated and belonging to Methanococcus is efficiently cultured at the low temps. of 20-25 deg.C, and fermentation is carried out. For example, when 1pts. seed culture soln. using a methane bacterium 8-G, a methane bacterium 8-P and a methane bacterium 16-11-L which are nonoceanic low-temp. ferment bacteria belonging to Methanococcus as the dominant species and 6pts. culture soln. for medium-temp. fermentation are used for the methane fermentation of excess sludge contg. 5.68% solid material, the generation speed of gaseous methane is increased by about 4 times at 20 deg.C and by about 6 times at 25 deg.C in comparison with the case where a usual culture soln. for medium-temp. fermentation is used.</p> |
