Concurrence of anaerobic ammonium oxidation and organo trophic denitrification in presence of p-cresol
Concurrence of anaerobic ammonium oxidation and organo trophic denitrification in presence of p-cresol
Date
2015
Authors
Ricardo Beristain-Cardoso, 0000-0003-1548-7678
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad Autónoma Metropolitana. Unidad Lerma
Abstract
Description
This study was carried out to evaluate the capacity of anaerobic granular sludge for oxidizing ammonium and p-cresol with nitrate as terminal electron acceptor. Kinetics for the anaerobic oxidation of ammonium and p-cresol is described in this paper. The phenolic compound was very efficiently consumed, achieving 65 % of mineralization. Ammonium and nitrate were also consumed at 83 and 92 %, respectively, being the main product N2. Anaerobic ammonium oxidation was promoted owing to accumulation of nitrite, and it allowed the synergy of anaerobic ammonium oxidation and organotrophic denitrification for the simultaneous removal of ammonium, nitrate, and p-cresol. A carbonaceous intermediate partially identified was transiently accumulated, and it transitorily truncated the respiratory process of denitrification. These experimental results might be considered for defining strategies in order to remove nitrate, ammonium, and phenolic compounds from wastewaters.
Keywords
BIOLOGÍA Y QUÍMICA