Table 4 Metal enrichment Index of the biochar produced at 350 (SSB350), 450 (SSB450) and 600 (SSB600) as compared to the feedstock.

From: Induced changes of pyrolysis temperature on the physicochemical traits of sewage sludge and on the potential ecological risks

Metal

CaO

MgO

K2O

Fe

Zn

Cu

P2O5

Mn

Pb

Al2O3

SSB350

0.91 ± 0.00

1.16 ± 0.08

1.07 ± 0.01

1.15 ± 0.00

1.48 ± 0.04

1.49 ± 0.04

1.21 ± 0.00

1.12 ± 0.13

1.13 ± 0.15

1.23 ± 0.02

SSB450

0.78 ± 0.00

1.17 ± 0.15

1.27 ± 0.01

1.17 ± 0.01

1.67 ± 0.04

1.76 ± 0.02

1.24 ± 0.02

1.22 ± 0.06

1.65 ± 0.32

1.68 ± 0.01

SSB600

0.79 ± 0.00

1.11 ± 0.23

1.22 ± 0.03

1.22 ± 0.01

1.73 ± 0.07

1.79 ± 0.02

1.32 ± 0.02

1.27 ± 0.16

1.46 ± 0.43

1.72 ± 0.01

Back to article page