Sixteen one-liter digesters were used to test four C/N ratios of 8. 4, 13. 9, 22. 2, and 27. 6 and four hydraulic retention times (RT) of 12, 18, 24, and 30 days. Percent methane in the biogas and methane production were dependent on both C/N and RT. Percent COD reduction, VS removal, TVA concentrations, digester pH, and amount of hydroxide solution needed to control digester pH were dependent on RT only.
|Original language||English (US)|
|Journal||Paper - American Society of Agricultural Engineers|
|State||Published - Dec 1 1986|