<abstract xmlns="http://www.w3.org/1999/xhtml">Undissociated HNO2 (up to 2 mg dm−3) was confirmed as substrate inhibitor for granular biomass from a denitritation upflow sludge bed reactor used for biological removal of nitrite. On the contrary, total nitrite nitrogen (N-NO2 up to 500 mg dm−3) and methanol (COD up to 2000 mg dm−3) were not proven to be inhibitors. pH also affected the denitritation efficiency (optimal pH was 5.9). Reduction of HNO2 concentration in the reactor by effluent recycling is recommended.</abstract>

Undissociated HNO2 (up to 2 mg dm−3) was confirmed as substrate inhibitor for granular biomass from a denitritation upflow sludge bed reactor used for biological removal of nitrite. On the contrary, total nitrite nitrogen (N-NO2 up to 500 mg dm−3) and methanol (COD up to 2000 mg dm−3) were not proven to be inhibitors. pH also affected the denitritation efficiency (optimal pH was 5.9). Reduction of HNO2 concentration in the reactor by effluent recycling is recommended.

Substrate inhibition and pH effect on denitritation with granular biomass

Department of Environmental Engineering, Faculty of Chemical and Food Technology

Acta Chimica Slovaca

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Substrate inhibition and pH effect on denitritation with granular biomass"}

Undissociated HNO2 (up to 2 mg dm−3) was confirmed as substrate inhibitor for granular biomass from a denitritation upflow sludge bed reactor used for...

Substrate inhibition and pH effect on denitritation with granular biomass

Online veröffentlicht: 09. Juli 2019

Seitenbereich: 91 - 96

DOI: https://doi.org/10.2478/acs-2019-0013

Schlüsselwörter
denitritation, granulated biomass, methanol, pH, substrate inhibition, undissociated HNO

© 2019 Stanislava Kecskésová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Substrate inhibition and pH effect on denitritation with granular biomass

Online veröffentlicht: 09. Juli 2019

Seitenbereich: 91 - 96

DOI: https://doi.org/10.2478/acs-2019-0013

Schlüsselwörterdenitritation, granulated biomass, methanol, pH, substrate inhibition, undissociated HNO

© 2019 Stanislava Kecskésová et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Schlüsselwörter
denitritation, granulated biomass, methanol, pH, substrate inhibition, undissociated HNO