Biosorption of Cr(III) and Pb(II) by Schoenoplectus californicus and Insights into the Binding Mechanism

Figure 9

EDX analyses of (a) filter with Cr³⁺ precipitated at pH 7 ± 0.1, (b) filter with Pb²⁺ precipitated at pH 7 ± 0.1, (c) shoot biomass treated with 1.5 mmol L⁻¹ Pb²⁺ at pH 7 ± 0.1, and (d) shoot biomass treated with 1.5 mmol L⁻¹ Cr³⁺ at pH 7 ± 0.1.

(a)

(b)

(c)

(d)