Denitrification Performance of Pseudomonas denitrificans in a Fluidized‐Bed Biofilm Reactor and in a Stirred Tank Reactor |
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Authors: | C Cattaneo C Nicolella M Rovatti |
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Abstract: | Denitrification of a synthetic wastewater containing nitrates and methanol as carbon source was carried out in two systems – a fluidized‐bed biofilm reactor (FBBR) and a stirred tank reactor (STR) – using Pseudomonas denitrificans over a period of five months. Nitrogen loading was varied during operation of both reactors to assess differences in the response to transient conditions. Experimental data were analyzed to obtain a comparison of denitrification kinetics in biofilm and suspended growth reactors. The comparison showed that the volumetric degradation capacity in the FBBR (5.36 kg N · m–3 · d–1) was higher than in the STR, due to higher biomass concentration (10 kg BM · m–3 vs 1.2 kg BM m–3). |
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Keywords: | Bioreactors Denitrification Microorganisms Wastewater |
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