Research Article

Improving Biomethane Production and Mass Bioconversion of Corn Stover Anaerobic Digestion by Adding NaOH Pretreatment and Trace Elements

Table 6

The amount of trace elements in feedstock and effluent.

ElementFeedstock (mg)Effluent (mg)
Activated sludgeCorn stoverElement additionLiquidSolid

Fe122.16 ± 0.2332.47 ± 0.8548.0012.66 ± 0.21192.18 ± 1.42
Co0.19 ± 0.010.07 ± 0.0119.470.78 ± 0.0119.20 ± 0.12
Ni0.21 ± 0.010.39 ± 0.0219.201.70 ± 0.1317.38 ± 0.16