Removal of Pb(II) from Aqueous Solutions with Manganese Oxide-Modified Diatomite

Figure 9

(a) Pb(II) adsorption capacity on Mn/diatomite at different solution pHs; (b) point of zero charge of Mn/diatomite in 0.01 M KCl solution and in 0.05 mM Pb²⁺ solution determined by the pH drift method [64].

(a)

(b)