RT Journal Article
T1 Predicting accumulation of intermediate compounds in nitrification and autotrophic denitrification processes: a chemical approach
A1 Campos Gómez, José Luis
A1 Dumais, Jacques
A1 Pavissich, Juan Pablo
A1 Franchi, Óscar
A1 Crutchik, Dafne
A1 Belmonte, Marisol
A1 Faúndez, Martín
A1 Jorquera, Lorena
A1 Pedrouso Fuentes, Alba
A1 Mosquera Corral, Anuska
A1 Val del Río, Ángeles
K1 Nitrification
K1 Autotrophic processes
K1 Waste water
K1 Ammonia
K1 Oxidation-Reduction
K1 Nitrous oxide
AB Nitrification and sulfur-based autotrophic denitrification processes can be used to remove ammonia from wastewater in an economical way. However, under certain operational conditions, these processes accumulate intermediate compounds, such as elemental sulphur, nitrite, and nitrous oxide, that are noxious for the environment. In order to predict the generation of these compounds, an analysis based on the Gibbs free energy of the possible reactions and on the oxidative capacity of the bulk liquid was done on case study systems. Results indicate that the Gibbs free energy is not a useful parameter to predict the generation of intermediate products in nitrification and autotrophic denitrification processes. Nevertheless, we show that the specific productions of nitrous oxide during nitrification, and of elemental sulphur and nitrite during autotrophic denitrification, are well related to the oxidative capacity of the bulk liquid.
PB Hindawi
SN 2314-6133
YR 2019
FD 2019
LK http://hdl.handle.net/10347/22065
UL http://hdl.handle.net/10347/22065
LA eng
NO Campos, J. L., Dumais, J., Pavissich, J. P., Franchi, O., Crutchik, D., Belmonte, M., Faúndez, M., Jorquera, L., Pedrouso, A., Mosquera-Corral, A., & Val Del Río, Á. (2019). Predicting Accumulation of Intermediate Compounds in Nitrification and Autotrophic Denitrification Processes: A Chemical Approach. BioMed research international, 7 Jul., 2051986. doi: 10.1155/2019/2051986
NO This work was funded by the Chilean Government through the project FONDECYT 1180650, CONICYT/ FONDAP/15130015 and CONICYT PIA/BASAL FB0002, and by the Spanish Government through TREASURE [CTQ2017- 83225-C2-1-R] and GRANDSEA [CTM2014-55397-JIN] projects. Te authors from Universidade de Santiago de Compostela belong to CRETUS [AGRUP2015/02] and the Galician Competitive Research Group [GRC ED431C 2017/ 29]. All these programs are cofunded by FEDER
DS Minerva
RD 30 abr 2026