In this study, the biokinetics of autotrophic denitrification with biogenic S0 (ADBIOS) for the treatment of nitrogen pollution in wastewaters were investigated. The used biogenic S0, a by-product of gas desulfurization, was an elemental microcrystalline orthorhombic sulfur with a median size of 4.69 µm and a specific surface area of 3.38 m2/g, which made S0 particularly reactive and bioavailable. During denitritation, the biomass enriched on nitrite (NO2-) was capable of degrading up to 240 mg/l NO2--N with a denitritation activity of 339.5 mg NO2--N/g VSS·d. The use of biogenic S0 induced a low NO2--N accumulation, hindering the NO2--N negative impact on the denitrifying consortia and resulting in a specific denitrification activity of 223.0 mg NO3--N/g VSS·d. Besides Thiobacillus being the most abundant genus, Moheibacter and Thermomonas were predominantly selected for denitrification and denitritation, respectively.
Biokinetics of microbial consortia using biogenic sulfur as a novel electron donor for sustainable denitrification.
A. Kostrytsia,S. Papirio,L. Morrison,U. Ijaz,G. Collins,P. Lens,G. Esposito
Published 2018 in Bioresource Technology
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- Publication year
2018
- Venue
Bioresource Technology
- Publication date
2018-12-01
- Fields of study
Biology, Medicine, Chemistry, Environmental Science
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- Source metadata
Semantic Scholar, PubMed
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