Table 4 Zeta potential and particle sizes of Fe@BC and BC.

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

Name

Before-adsorption

BC

Fe@BC

Zeta potential (mV)

− 14.6

− 17.6

Z-Average (d nm)

342.0

396.1

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