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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