Peer-Reviewed Journal Details
Mandatory Fields
Kostrytsia, A;Papirio, S;Frunzo, L;Maffei, MR;Porca, E;Collins, G;Lens, PNL;Esposito, G
2018
April
Journal Of Environmental Management
Elemental sulfur-based autotrophic denitrification and denitritation: microbially catalyzed sulfur hydrolysis and nitrogen conversions
Published
Optional Fields
BACTERIAL COMMUNITY STRUCTURE FLUIDIZED-BED DENITRIFICATION WASTE-WATER TREATMENT BIOLOGICAL REMOVAL MULTISPECIES BIOFILMS NITRATE REMOVAL ELECTRON-DONOR GROUNDWATER NITRITE PERFORMANCE
211
313
322
The hydrolysis of elemental sulfur (S-0) coupled to S-0-based denitrification and denitritation was investigated in batch bioassays by microbiological and modeling approaches. In the denitrification experiments, the highest obtained NO3--N removal rate was 20.9 mg/l.d. In the experiments with the biomass enriched on NO2-, a NO2--N removal rate of 10.7 mg/l.d was achieved even at a NO2--N concentration as high as 240 mg/l. The Helicobacteraceae family was only observed in the biofilm attached onto the chemically-synthesized S-0 particles with a relative abundance up to 37.1%, suggesting it was the hydrolytic biomass capable of S-0 solubilization in the novel surface-based model. S-0-driven denitrification was modeled as a two-step process in order to explicitly account for the sequential reduction of NO3- to NO2- and then to N-2 by denitrifying bacteria. (C) 2018 Elsevier Ltd. All rights reserved.
0301-4797
10.1016/j.jenvman.2018.01.064
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