Open AccessDenitrification Performance of Pseudomonas denitrificans in a Fluidized‐Bed Biofilm Reactor and in a Stirred Tank Reactor
Author(s) -
Cattaneo C.,
Nicolella C.,
Rovatti M.
Publication year - 2003
Publication title -
engineering in life sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.547
H-Index - 57
eISSN - 1618-2863
pISSN - 1618-0240
DOI - 10.1002/elsc.200390026
Subject(s) - denitrification , fluidized bed , biofilm , biomass (ecology) , bioreactor , nitrogen , methanol , continuous stirred tank reactor , chemistry , environmental engineering , environmental science , waste management , pulp and paper industry , bacteria , biology , ecology , organic chemistry , engineering , genetics
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 ).