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Table 1 Main feedstock parameters at the beginning and the end of the process

From: Comparative study on factors affecting anaerobic digestion of agricultural vegetal residues

No. Substrates Humidity [%] Ash content [%] Lower heating value [kJ/kg] Higher heating value [kJ/kg] C/N
Beginning of the process
1 Wheat bran 10.23 4.63 15.535 17.098 88.3
2 Mix damaged ground grains (50% wheat rest corn kernels) 10.98 1.64 15.245 16.591 59.1
End of the process
3 Wheat bran 0.29 15.14 7.356 6.094 -
4 Mix damaged ground grains (50% wheat rest corn kernels) 0.93 49.89 11.502 10.676 -