Arsenic(V) Removal by Sulfate Modified Iron Oxide-Coated Sand (SMIOCS) in a Fixed Bed Column
作者： Rakesh Chandra Vaishya , Sudhir Kumar Gupta
关键词: Iron oxide 、 Desorption 、 Inorganic chemistry 、 Sorbent 、 Distilled water 、 Barium 、 Arsenic 、 Nuclear chemistry 、 Particle size 、 Chemistry 、 Alkalinity
摘要: A novel granular media developed by the coating of iron, barium and sulfur on quartz sand surface has been demonstrated to be an effective sorbent for removal arsenic(V) from a 0.01 M NaNO3-spiked distilled water system in laboratory-scale tests. The results fixed bed studies indicate that is dependent pH, size influent arsenic concentrations. particle shown significant differences reactor breakthrough times similar experimental conditions. As(V) may explained using complexation theory. presence alkalinity (250‐260 mg/L as CaCO3) hardness (200 slightly increases time conditions without hardness. Desorption 0.2 NaOH elutant resulted nearly 92% recovery arsenic(V). theoretical model based two parameters good correlation with observed data generated during depth variation studies.
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