2006•Unpublished venueRequires access
Effect of Temperature and FA Concentration on the Conversion of Ammonium to Nitrite
Jung Hoon Kim, Young‐Chae Song, Hung‐Suck Park
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Abstract
The effects of free ammonia (FA) concentration and temperature on nitrite accumulation were studied. To estimate the most effective ammonium oxidation and nitrite build-up condition, nitrification tests were conducted in batch conditions at various FA concentrations, and at different ammonium concentration and temperature. The activation energies of ammonium oxidizer were 81.7 KJ/mol below , and 32.5 KJ/mol over , while that of nitrite oxidizer was 35.5 KJ/mol irrespective of temperature variations. The results of nitrification tests conducted at different FA concentrations and temperatures showed that temperature strongly affects nitrite accumulation, while effects due to FA concentrations were found negligible.