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.
| Element | Feedstock (mg) | Effluent (mg) | Activated sludge | Corn stover | Element addition | Liquid | Solid |
| Fe | 122.16 ± 0.23 | 32.47 ± 0.85 | 48.00 | 12.66 ± 0.21 | 192.18 ± 1.42 | Co | 0.19 ± 0.01 | 0.07 ± 0.01 | 19.47 | 0.78 ± 0.01 | 19.20 ± 0.12 | Ni | 0.21 ± 0.01 | 0.39 ± 0.02 | 19.20 | 1.70 ± 0.13 | 17.38 ± 0.16 |
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