Vermicompost as an accelerator of methane production
by Shiguan Yang, Jihong Li, Zheng Zheng, Yan Zhang, Bailiang Zhang
International Journal of Environmental Engineering (IJEE), Vol. 1, No. 1, 2009

Abstract: The influences of different vermicompost concentrations of 8.33, 4.35 and 0.9%, respectively (based on TS), on the CH₄ production, Specific Methanogenic Activities (SMAs) of the anaerobic sludge, pH and COD removal were investigated. A maximum cumulative CH₄ production of 874 ml/L _{fermentation liquor} was obtained from the experiment with vermicompost concentration of 8.33% which increased by 40.3% when compared with the control, and a maximum SMA of 295.9 mg COD _CH4/g VS•d was achieved which increased by 45% relative to the control. The results also showed that vermicompost could enhance the COD removal and improve the buffering capacity of anaerobic digestion system.

Online publication date: Thu, 11-Jun-2009

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