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Hydrogenotrophic denitrification was demonstrated using hydrogen generated from anoxic corrosion of metallic iron. For this purpose, a mixture of hydrogenated water and nitrate solution was used as reactor feed. A semi-batch reactor with nitrate loading of 2000mgm −3 d −1 and hydraulic retention time (HRT) of 50days produced effluent with nitrate concentration of 0.27mgNL −1 ...
Maintenance of stable pH through provision of adequate buffering is of importance to many pollutant removal processes where either acid or base is produced as a reaction product. The objective of this study was to evaluate the suitability of pyrite (FeS 2 ) as an in situ buffering agent for arresting pH increase during metallic iron assisted hydrogenotrophic denitrification. Pyrite is considered...
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