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Several industrial and remedial processes create aqueous wastes containing complexed heavy metal species. TiO 2 -assisted photocatalysis was evaluated to address contamination problems from Pb-EDTA at both stoichiometric and non-stoichiometric Pb(II)/EDTA ratios. Pb-EDTA destruction occurred rapidly. At higher pH, lead became adsorbed onto the TiO 2 as complexed intermediates. Continued...
Specimens of iron-doped titania containing different amounts of Fe (0.5-5%) were prepared from TiO 2 (Degussa P-25) and Fe(III) acetylacetonate by the wet impregnation method. Samples were characterized by X-ray diffraction analysis, specific surface area (BET) measurements, SEM-EDX, atomic absorption and IR and diffuse reflectance spectra. From the structural point of view, the samples were...
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