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Table 3 Heavy metals concentration in the used substrates

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

No. Heavy metal Heavy metal concentration in wheat bran, [mg / kg] Heavy metal concentration in the mix, [mg / kg]
1 Cr 0.919 0.705
2 Mn 184.127 59.158
3 Co 1.385 0.6
4 Ni 1.494 -
5 Cu 6.053 -
6 As 0.366 -
7 Se 0.833 0.289
8 Br 5.472 10.114
9 Sr 7.256 2.098
10 Cd 4.102 3.58
11 Sn - 0.584
12 Hg - -
13 Pb 6318 8.291