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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
- Tan, Li, Nishimura, Hiroto, Wang, Yan-Fang, Sun, Zhao-Yong, Tang, Yue-Qin, Kida, Kenji, Morimura, Shigeru
- Journal of bioscience and bioengineering 2019 v.127 no.5 pp. 582-588
- biogas, cellulose, energy recovery, ethanol fermentation, hydrolysis, kitchen waste, methane, methane production, microbial communities, waste paper
- 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.