Substrate inhibition and pH effect on denitritation with granular biomass

Stanislava Kecskésová; Zuzana Imreová; Bibiána Kožárová; Ján Derco; Miloslav Drtil

doi:10.2478/acs-2019-0013

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Substrate inhibition and pH effect on denitritation with granular biomass

Acta Chimica Slovaca

Volume 12 (2019): Issue 1 (April 2019)

By: Stanislava Kecskésová, Zuzana Imreová, Bibiána Kožárová, Ján Derco and Miloslav Drtil

Open Access

|Jul 2019

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.

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Articles in this issue

DOI: https://doi.org/10.2478/acs-2019-0013 | Journal eISSN: 1339-3065 | Journal ISSN: 1337-978X

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Language: English

Page range: 91 - 96

Published on: Jul 9, 2019

Published by: Slovak University of Technology in Bratislava

In partnership with: Paradigm Publishing Services

Publication frequency: 1 issue per year

Keywords:

denitritation,

granulated biomass,

methanol,

pH,

substrate inhibition,

undissociated HNO₂

Related subjects:

Chemistry,

Chemistry, other

© 2019 Stanislava Kecskésová, Zuzana Imreová, Bibiána Kožárová, Ján Derco, Miloslav Drtil, published by Slovak University of Technology in Bratislava
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 12 (2019): Issue 1 (April 2019)