Catalytic Hydrogenation of Aqueous Phase Nitrate Over Fe/C Catalysts
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Catalytic hydrogenation of nitrate in water has been carried out over Fe/C catalysts at ambient temperature using batch and continuous reactors. In batch reaction nitrate reduction activity of 2.9 mmol g metal −1 min−1 with nearly 100% selectivity towards nitrogen was obtained. Column study shows nitrate reduction below 5 ppm for an initial concentration of 100 ppm. Break through capacity, to reach concentration of 45 mg L−1, is more than 530 bed volumes. The catalysts were characterized using XRD, SEM–EDAX and XPS. With high selectivity and activity the catalytic system in present study could be a potential option for nitrate removal from water.
KeywordsCatalytic hydrogenation Fe/C catalyst Water treatment Nitrate
Authors would like to gratefully acknowledge the financial support from Rajiv Gandhi National Drinking Water Works Mission, Ministry of Rural Development, New Delhi. We also acknowledge Dr. B. Sreedhar, scientist, Indian Institute of Chemical Technology, Hyderabad for carrying out XPS analysis.