Effect of ventilation and moisture content on microbial activity in the early stage of composting with vacuum-induced aeration
2008
Miyatake, F.(National Inst. of Livestock and Grassland Science, Nasushiobara, Tochigi (Japan). Nasu Research Station) | Abe, Y. | Honda, Y. | Iwabuchi, K.
The effect of ventilation and moisture content on oxygen uptake rate, heat production rate, and specific growth rate was investigated to determine the reaction characteristics in the early stage of composting using vacuum-induced aeration system. Maximum oxygen uptake rate and heat production rate were, observed at ventilation rates of 0.5-0.7 L/min/kg-vm and moisture contents of 56-65% wet basis. These results were quite similar to that reported in previous composting studies with forced-pressure aeration system. The profile of specific growth rate observed in vacuum-induced aeration also coincided with that of forced-pressure aeration reported in past research. The result of this study showed that vacuum-induced and forced-pressure aeration systems have the same performance in the early stage of composting.
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