ena-STUDY-Microbial Communities Laboratory-24-07-2018-13:55:48:241-870
BIOKINETICS OF MICROBIAL CONSORTIA USING BIOGENIC SULFUR AS A NOVEL ELECTRON DONOR FOR SUSTAINABLE DENITRIFICATION
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 the median size 4.69 µm, specific surface area 3.38 m2/g). A specific denitrification activity of 223.0 mg NO3--N/g VSS·d was achieved by the biogenic S0-oxidizing microbial consortium. During denitritation, the biomass enriched on nitrite (NO2-) was capable of degrading NO2--N at a rate of 73.0 mg NO2--N /l·d, which was 3 times higher than that achieved during denitrification. Moheibacter and Thermomonas were predominantly selected for denitrification and denitritation, respectively. The impact of this study for the design and scale-up of an integrated nitrogen treatment with biogenic S0 recovery/reuse is discussed.
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 the median size 4.69 µm, specific surface area 3.38 m2/g). A specific denitrification activity of 223.0 mg NO3--N/g VSS·d was achieved by the biogenic S0-oxidizing microbial consortium. During denitritation, the biomass enriched on nitrite (NO2-) was capable of degrading NO2--N at a rate of 73.0 mg NO2--N /l·d, which was 3 times higher than that achieved during denitrification. Moheibacter and Thermomonas were predominantly selected for denitrification and denitritation, respectively. The impact of this study for the design and scale-up of an integrated nitrogen treatment with biogenic S0 recovery/reuse is discussed.