Lookup NU author(s): Professor Russell Davenport,
Professor David Werner
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
The effects of temperature reduction (from 35 °C to 20 °C) on nitrogen removal performance and microbial diversity of an anammox sequencing batch reactor were evaluated. The reactor was fed for 148 days with anaerobically pretreated municipal wastewater amended with nitrite. On average, removal efficiencies of ammonium and nitrite were high (96%) during the enrichment period and phases 1 (at 35 °C) and 2 (at 25 °C), and slightly decreased (to 90%) when the reactor was operated at 20 °C. Deep sequencing analysis revealed that microbial community structure changed with temperature decrease. Anammox bacteria (Ca. Brocadia and Ca. Anammoximicrobium) and denitrifiers (Burkholderiales, Myxococcales, Rhodocyclales, Xanthomonadales, and Pseudomonadales) were favoured when the temperature was lowered from 35 °C to 25 °C, while Anaerolineales and Clostridiales were negatively affected. The results support the feasibility of using the anammox process for mainstream nitrogen removal from anaerobically pretreated municipal wastewater at typical tropical temperatures.
Author(s): de Almeida Fernandes L, Pereira AD, Leal CD, Davenport R, Werner D, Mota Filho CR, Bressani-Ribeiro T, Augusto de Lemos Chernicharo C, Calabria de Araújo J
Publication type: Article
Publication status: Published
Journal: Bioresource Technology
Print publication date: 01/06/2018
Online publication date: 23/02/2018
Acceptance date: 16/02/2018
Date deposited: 03/05/2018
ISSN (print): 0960-8524
ISSN (electronic): 1873-2976
Publisher: Elsevier BV
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