Mixed Maghemite/Hematite Iron Oxide Nanoparticles Synthesis for Lead and Arsenic Removal from Aqueous Solution

Figure 8

Reusability of iron oxides IO-Na, IO-K, and IO-Na for (a) Pb adsorption with initial concentration of 10 mg/L, mass of 0.1 g at pH = 6.7 and for (b) As adsorption with initial concentration of 10 mg/L, mass of 0.1 g at pH = 8.

(a)

(b)