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There are many areas in the world where the ground water has been contaminated by arsenic. TiO 2 is one of the most promising materials that can remove arsenic from groundwater supplies by the adsorption-based processes. The TiO 2 surface is capable of photo-catalytic oxidation (PCO) changing the arsenite [As(III)] to arsenate [As(V)] which is more easily absorbed by the surface, increasing...
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