Analytical techniques
Total solids (TS), volatile solids (VS), CODt and soluble chemical
oxygen demand (CODs), Kjeldahl nitrogen (KN), ammonium nitrogen
ðN—NHþ4
Þ and alkalinity were measured twice a week in accordance
with standard methods [9]. Free ammonia concentrations
were calculated based on Hansen et al. [10].
Bo ratio, Eq. (1), was used to predict R1 and R2 feedstock biodegradability
[11].
Bo ¼ g VSdestroyed=g VSadded
Analytical techniquesTotal solids (TS), volatile solids (VS), CODt and soluble chemicaloxygen demand (CODs), Kjeldahl nitrogen (KN), ammonium nitrogenðN—NHþ4Þ and alkalinity were measured twice a week in accordancewith standard methods [9]. Free ammonia concentrationswere calculated based on Hansen et al. [10].Bo ratio, Eq. (1), was used to predict R1 and R2 feedstock biodegradability[11].Bo ¼ g VSdestroyed=g VSadded
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