Partial nitritation and anammox of a livestock manure digester liquor and analysis of its microbial community

Yamamoto, Takuya; Wakamatsu, Shingo; Qiao, Sen; Hira, Daisuke; Fujii, T.; Furukawa, Koichi

doi:10.1016/j.biortech.2010.10.091

Cited by 57 publications

(22 citation statements)

References 32 publications

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“…On the other hand, other autotrophic nitrogen removal technologies, such as the completely autotrophic nitrogen‐removal over nitrate or the deammonnification processes, are operated with certain aeration and therefore will support the growth of totally different bacterial communities than those from the MBR Anammox bioreactor. Other attempts for the identification of bacterial communities of Two‐Step Anammox bioreactors have been conducted by cloning and quantitative PCR techniques . Both studies showed a dominance of anammox bacteria and the presence of other minor species, such as Chloroflexi‐related strains or low abundance of AOB .…”

Section: Resultsmentioning

confidence: 99%

Bacterial community structure of a lab‐scale anammox membrane bioreactor

González‐Martínez

Osorio

Rodríguez-Sánchez

et al. 2014

Biotechnology Progress

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Autotrophic nitrogen removal technologies have proliferated through the last decade. Among these, a promising one is the membrane bioreactor (MBR) Anammox, which can achieve very high solids retention time and therefore sets a proper environment for the cultivation of anammox bacteria. In this sense, the MBR Anammox is an efficient technology for the treatment of effluents with low organic carbon and high ammonium concentrations once it has been treated under partial nitrification systems. A lab-scale MBR Anammox bioreactor has been built at the Technological University of Delft, The Netherlands and has been proven for efficient nitrogen removal and efficient cultivation of anammox bacteria. In this study, next-generation sequencing techniques have been used for the investigation of the bacterial communities of this MBR Anammox for the first time ever. A strong domination of Candidatus Brocadia bacterium and also the presence of a myriad of other microorganisms that have adapted to this environment were detected, suggesting that the MBR Anammox bioreactor might have a more complex microbial ecosystem that it has been thought. Among these, nitrate-reducing heterotrophs and primary producers, among others, were identified. Definition of the ecological roles of the OTUs identified through metagenomic analysis was discussed.

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Section: Resultsmentioning

confidence: 99%

Bacterial community structure of a lab‐scale anammox membrane bioreactor

González‐Martínez

Osorio

Rodríguez-Sánchez

et al. 2014

Biotechnology Progress

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“…In this study, Nitrosomonas was enriched at 83.72%. Accordingly, the achieved NLR is near to 7 times of the NLR reported by Yamamoto et al, (2011). Thus, it is considered that the PNBS reactor used in this study can enrich Nitrosomonas effectively by which the NLR can be readily increased.…”

Section: Discussionmentioning

confidence: 50%

“…(Yamamoto et al, 2006). Yamamoto et al, (2011) reported that only 15% of the total clones were identified as Nitrosomonas in one nitritation reactor. In this study, Nitrosomonas was enriched at 83.72%.…”

Section: Discussionmentioning

confidence: 99%

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Treatment of high-strength ammonia containing wastewater using partial nitritation system with biological selector

Jin

D²,

Zhang³

2015

Global NEST Journal

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In this paper, one partial nitritation system with biological selector (PNBS) was first evaluated in treating high-strength ammonia containing wastewater. Nitrite production rate (NPR) of 8.25 kg N m -3 d -1 was achieved with influent NH4-N concentration 2000 mg l -1 and HRT 3.2 h, which is, to our knowledge, the highest NPR to be treated successfully by an nitritation reactor. A genetic analysis of the organisms in the PNBS revealed an abundance of Nitrosomonas sp. ENI-11, uncultured bacterium clone: AnDHS-3, Nitrosomonas sp. ENI-11 and Nitrosomonas eutropha enriched in the PNBS reactor.

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“…3(b), the influent TN concentration was increased to 2200 mg l -1 with the nitrogen removal efficiency above 89% and the NRR at 6 kg N/m3/d (process hydraulic retention time of 8.8 h) near the end of the study. High NO2-N concentrations are inhibitory to Anammox bacteria (Carvajal-Arroyo et al, 2014); thus, highly concentrated nitrogen wastewater is usually diluted prior to treatment in Anammox reactors (Yamamoto et al, 2011). However, this practice is forbidden by law for wastewater treatment in China.…”

Section: Discussionmentioning

confidence: 99%

Granular activated carbon as nucleus for formation of Anammox granules in an expanded granular-sludge-bed reactor

2015

Global NEST Journal

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Granular activated carbon (GAC) was used in an Anammox process treating synthetic wastewater with the aim of evaluating its use as a growth nucleus to enhance granule formation. In an expanded granularsludge-bed reactor, granules were formed demonstrating excellent retention characteristics with an average settling velocity of 200 m h -1 (5 cm s -1) over a startup period of only 38 days. The time required for formation of Anammox granules under the experimental conditions in this study, was thus demonstrated to be much shorter than that of others. A genetic analysis of the organisms in the granular bed revealed an abundance of Paenisporosarcina uncultured bacterium similar to other known Anammox bacteria.

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Partial nitritation and anammox of a livestock manure digester liquor and analysis of its microbial community

Cited by 57 publications

References 32 publications

Bacterial community structure of a lab‐scale anammox membrane bioreactor

Bacterial community structure of a lab‐scale anammox membrane bioreactor

Treatment of high-strength ammonia containing wastewater using partial nitritation system with biological selector

Granular activated carbon as nucleus for formation of Anammox granules in an expanded granular-sludge-bed reactor

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