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Effect of organic loading rate on thermophilic methane fermentation of stillage eluted from ethanol fermentation of waste paper and kitchen waste

Author:
Tan, Li, Nishimura, Hiroto, Wang, Yan-Fang, Sun, Zhao-Yong, Tang, Yue-Qin, Kida, Kenji, Morimura, Shigeru
Source:
Journal of bioscience and bioengineering 2019 v.127 no.5 pp. 582-588
ISSN:
1389-1723
Subject:
biogas, cellulose, energy recovery, ethanol fermentation, hydrolysis, kitchen waste, methane, methane production, microbial communities, waste paper
Abstract:
Thermophilic methane fermentation was a valid approach for handling the stillage eluted from ethanol fermentation of waste paper and kitchen waste. The wide organic loading rate (OLR) range (2–14 g VTS/(L d)) for stable performance and relatively high energy recovery efficiency (79.0%) were achieved, and OLR of 8 g VTS/(L d) was optimum for achievement of highest biogas evolution and VTS removal efficiency. Microbial community analysis revealed that hydrolysis of cellulose was the critical step for methane production from the stillage.
Agid:
6359667