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Your search keyword '"Shen, Nan"' showing total 13 results
Start Over Author "Shen, Nan" Journal bioresource technology
13 results on '"Shen, Nan"'

13. Long solid retention time (SRT) has minor role in promoting methane production in a 65 °C single-stage anaerobic sludge digester.

Author

Chen, Yun, Xiao, Keke, Jiang, Xie, Shen, Nan, Zeng, Raymond J., and Zhou, Yan

Subjects
*METHANE, *ANAEROBIC digestion, *ACTIVATED sludge process, *VOLATILE organic compounds, *HYDROLYSIS
Abstract

In this study, a thermophilic (65 °C) single-stage wasted activated sludge (WAS) digester was established and the effects of solid retention time (SRT) on the reactor performance were investigated. The result showed that the optimum SRT was 6 days with methane yield of 186.16 mL/g VS. It was found that SRT had little effect on the hydrolysis and volatile solids (VS) destruction, and the high temperature employed seemed sufficient to achieve maximum hydrolysis and VS destruction performance. Longer SRT, however, promoted the release of recalcitrant compounds and impaired acidification, leading to the low methane yield. The microbial community analysis revealed that the dominant pathway for methane production was through syntrophic activity of acetate oxidizing bacteria and hydrogenotrophic methanogens while acetoclastic methanogens were absent in the system. [ABSTRACT FROM AUTHOR]

Published
2017
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