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Anammox process in a closed sponge-bed trickling filter
Published in Javier Adrián Sánchez Guillén, Autotrophic Nitrogen Removal from Low Concentrated Effluents, 2017
However, the abundance of Anammox bacteria in those reactors was relatively low since they were not aimed to achieve nitrogen removal via Anammox. Recently, Wilsenach et al. (2014) identified the presence of Anammox Candidatus Brocadia anammoxidans and Candidatus Brocadia Fulgida on the biofilm of trickling filters with stones as support media, in the Daspoort municipal wastewater treatment plant, South Africa. According to the authors, the contribution of the Anammox bacteria seems to be important for the nitrogen removal in these trickling filters.
Reduction of methane emission from landfills by its microbial oxidation in filter bed
Published in Małgorzata Pawłowska, Lucjan Pawłowski, Management of Pollutant Emission from Landfills and Sludge, 2014
Małgorzata Pawłowska, Lucjan Pawłowski
The ANAMMOX process (acronym for: ANaerobic AMMonia OXidation) was first discovered in a wastewater treatment plant in Delft, The Netherlands, and today anammox activity has been reported from several other treatment plants (Strous et al., 1999; Schmid et al., 2000; Egli et al., 2001). Recently the process has also been shown to occur in nature, in marine sediment and anoxic water columns (Thamdrup & Dalsgaard, 2002; Dalsgaard et al. 2003; Rysgaard et al., 2004). Anammox is carried out by lithoautotrophic bacteria belonging to the order Planctomycetales, including Candidatus Brocadia anammoxidans, and Candidatus Kuenenia stuttgartiensis identified by the Fluorescent in situ Hybridisation method (FISH) (Egli et al., 2001; Jetten et al., 2001). The biodiversity of Anammox bacteria was extended by the discovery of the genus Scalindua (Schmid et al., 2003). Two species were found: Candidatus Scalindua brodae and Scalindua wagneri. The genus Scalindua has been also detected in the marine ecosystems of the Black Sea and Candidua was named Scalindua sorokinii (Kuypers et al., 2003). Very recently, Anammox bacteria were found in the leachate of a landfill For this purpose, it has been possible to apply several novel tools, including FISH, dot-blot rRNA hibridization, and 16S rDNA clone library construction (Egli et al., 2003). The Anammox process converts ammonium directly into dinitrogen gas under anaerobic conditions, with nitrite as an electron-acceptor in the absence of any organic C-source. The stoichiometry of the process can be summarized by the equation without cell synthesis (van Dongen et al., 2001a; Constantine et al., 2005) or with cell synthesis (van Dongen et al., 2001a;Fux,2003) respectively:
Research advances in anammox granular sludge: A review
Published in Critical Reviews in Environmental Science and Technology, 2022
Mabruk Adams, Junxiang Xie, Arthur wendinso Judicael Kabore, Yaofeng Chang, Jiawei Xie, Menglei Guo, Chongjun Chen
To a large extent, the dominant anammox bacteria in the anammox process is determined by the prevailing pH. In anammox systems operating between pH range of 7.8 and 8, “Candidatus Brocadia Anammoxidans” (Chen, Ji et al., 2010; Cho et al., 2011; Third et al., 2005; Van Der Star et al., 2008; Wang et al., 2012) and Kuenenia stuttgartiensis (Dapena-Mora, Campos et al., 2004; Van Der Star et al., 2008) were identified as the predominant species (He et al., 2015) whereas at pH 6.8-7 Brocadia Anammoxidans and “Candidatus Anammoxoglobus propionicus” were the dominant species in the enrichment from aerobic granules and leachate sludge, respectively (Ni et al., 2010). Thus, for efficient nitrogen removal, operating parameters such as temperature and pH need to be controlled at appropriate levels.