Concept

Nitrifying bacteria

Publications associées (35)

Macroinvertebrate community traits and nitrate removal in stream sediments

Tom Ian Battin

In-stream nitrate removal capacity may be used as a proxy for the ecosystem service of water quality regulation. It is well known that this natural function is driven by abiotic and biotic factors in running water environments. With regard to biotic dri ...

Wiley-Blackwell2017

Mechanisms and modeling of pathogen fate in pilot scale nutrient recovery reactors

Loïc Decrey, Simon Schindelholz, Manfred Schoger, Ariane Schertenleib, Timothy R. Julian

Due to its high nutrient content, source-separated urine can be processed into marketable liquid or solid fertilizers. The Valorisation of Urine Nutrients in Africa (VUNA) project developed and tested pilot-scale nitrification/distillation and struvite (Mg ...

2017

Role of ammonia-oxidizing bacteria in micropollutant removal from wastewater with aerobic granular sludge

David Andrew Barry, Christof Holliger, Jonas Margot, Samuel Lochmatter

Nitrifying wastewater treatment plants (WWTPs) are more efficient than non-nitrifying WWTPs to remove several micropollutants such as pharmaceuticals and pesticides. This may be related to the activity of nitrifying organisms, such as ammonia-oxidizing bac ...

IWA Publishing2016

Nitrogen Removal over Nitrite by Aeration Control in Aerobic Granular Sludge Sequencing Batch Reactors

Christof Holliger, Julien Maillard, Samuel Lochmatter

This study investigated the potential of aeration control for the achievement of N-removal over nitrite with aerobic granular sludge in sequencing batch reactors. N-removal over nitrite requires less COD, which is particularly interesting if COD is the lim ...

Mdpi Ag2014

Inactivation of pathogens in urine nitrification reactors

Ariane Schertenleib

Through nutrient recovery by urine separation, the VUNA project aims to develop an effective sanitation system that simultaneously helps address important issues such as environmental pollution and water scarcity. Refinement of the nutrient recovery proces ...

2014

Identification of bacteria from wastewater for the oxidation of micropollutants

Julien Maillard, Emmanuelle Rohrbach, Arnaud Michel Gelb

The term "micropollutants" includes xenobiotic compounds of various origins which can be found in aquatic environments at concentration levels of nano- to micrograms per liter and which present a negative effect on ecosystems. Many aromatic micropollutants ...

2014

Effect of ammonia on the decomposition of ammonium formate over Au/TiO2 under oxidizing conditions relevant to SCR: Enhancement of formic acid decomposition rate and CO2 production

Oliver Kröcher

Ammonium formate (AmFo) and formic acid decomposition were carried out in the presence of excess O-2 and H2O over 0.5 wt%Au/TiO2 anatase monolithic catalysts using various contact times and temperatures between 160 degrees C and 300 degrees C, under spray ...

Elsevier Science Bv2014

Microbial diversity differences within aerobic granular sludge and activated sludge flocs

In this study, we investigated during 400 days the microbial community variations as observed from 16S DNA gene DGGE banding patterns from an aerobic granular sludge pilot plant as well as the from a full-scale activated sludge treatment plant in Epe, the ...

Springer2013

Optimization of Reactor Startup and Nitrogen Removal of Aerobic Granular Sludge Systems

Samuel Lochmatter

Aerobic granular sludge (AGS) in sequencing batch reactors (SBR) has recently made its proofs as full-scale technology for the biological treatment of urban wastewater. In contrast to conventional flocculent activated sludge, microorganisms aggregate to de ...

EPFL2013

The biofilm granulation mechanisms depend on the predominant populations involved

Christof Holliger, David Gregory Weissbrodt, Samuel Lochmatter

The novel aerobic granular sludge technology is attractive for intensified biological nutrient removal from wastewater. This process is based on self-granulated flocs forming fast-settling mobile biofilms with a gel-like consistence, called “granules”. Mec ...

2013

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