Table 3 The test results of XRF.

From: Adsorption of Fe-modified peanut shell biochar for Pb(II) in mixed Pb(II), Cu(II), Ni(II) solutions

Biochar

Content percentage (%)

Si

S

Cl

K

Ca

Ti

Mn

Fe

Others

BC

3.189

0.704

1.235

0.913

91.133

0.243

0.975

1.102

0.506

Fe@BC

2.715

0.787

0.932

0.174

78.731

0.151

0.254

15.904

0.354