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Table 5 Calculated concentrations in biogas plants/fermenters in g t−1 = mg kg−1 FM, of four different substrate input mixtures given in percent and a 100 % maize input (Ref.), based on fresh weight input. Calculated with a total fresh weight input of 20 t per day

From: Trace element delivery for biogas production enhanced by alternative energy crops: results from two-year field trials

Mix Substrates Co Mn Mo Ni
g t−1 FM
Ref. M 100% 0.003 6.2 0.13 0.06
1 M 35%, FB 35%, A 30% 0.025 8.8 0.12 0.09
2 M 37.5%, FB 37.5%, RG 25% 0.024 11.2 0.24 0.14
3 M 40%, FB 60% 0.032 8.2 0.12 0.12
4 M 35%, FB 40%, man. 25% 0.073 15.9 0.18 0.30
  1. man. = manure, FM = fresh matter