Substrate loading rates conducive to nitritation in entrapped cell reactors: performance and microbial community structure
Sign Up to like & getrecommendations! Published in 2022 at "Environmental Science and Pollution Research"
DOI: 10.1007/s11356-022-18632-1
Abstract: This study aimed to elucidate the boundaries of ammonia and organic loading rates that allow for nitritation in continuous flow phosphorylated-polyvinyl alcohol entrapped cell reactors and to clarify the community structure of microorganisms involving nitrogen… read more here.
Keywords: entrapped cell; loading rates; ammonia; nitritation ... See more keywords
First full-scale nitritation-anammox plant using gel entrapment technology for ammonia plant effluent
Sign Up to like & getrecommendations! Published in 2017 at "Biochemical Engineering Journal"
DOI: 10.1016/j.bej.2017.03.005
Abstract: Abstract The first full-scale nitritation-anammox process using gel entrapment technology was evaluated for nitrogen removal. Ammonia plant effluents contained not only ammonium but also methanol, an anammox inhibitor. The nitrogen concentration and loading design were… read more here.
Keywords: nitritation; anammox; plant; first full ... See more keywords
Single reactor nitritation-denitritation for high strength digested biosolid thickening lagoon supernatant treatment
Sign Up to like & getrecommendations! Published in 2020 at "Biochemical Engineering Journal"
DOI: 10.1016/j.bej.2020.107630
Abstract: Abstract Ammonia-rich lagoon supernatant has a low alkalinity/nitrogen ratio, which is ideal for single reactor nitritation-denitritation operation. In the present study, an integrated fixed film and activated sludge system in sequencing batch mode (IFAS-SBR) was… read more here.
Keywords: nitritation; nitritation denitritation; lagoon supernatant; single reactor ... See more keywords
Startup and performance of a novel single-stage partial nitritation/anammox system for reject water treatment.
Sign Up to like & getrecommendations! Published in 2020 at "Bioresource technology"
DOI: 10.1016/j.biortech.2020.124432
Abstract: A novel internal circulation contact oxidation membrane bioreactor (ICCOMBR) was constructed to investigate a three steps startup strategy of single-stage partial nitritation-anammox (SPNA) system. A stable nitrite accumulation rate (NAR) of 86.60% was achieved with… read more here.
Keywords: single stage; nitritation; nitritation anammox; system ... See more keywords
Efficient transition from partial nitritation to partial nitritation/Anammox in a membrane bioreactor with activated sludge as the sole seed source.
Sign Up to like & getrecommendations! Published in 2020 at "Chemosphere"
DOI: 10.1016/j.chemosphere.2020.126719
Abstract: A lab-scale membrane bioreactor (MBR) was employed to carry out the partial nitritation/Anammox (PN/A) process from conventional activated sludge. Seed sludge was cultivated under microaerobic conditions for 10 days before seeding into the MBR. The… read more here.
Keywords: nitritation; seed; efficient transition; partial nitritation ... See more keywords
Stability and control of a partial nitritation reactor with biomass retention
Sign Up to like & getrecommendations! Published in 2019 at "Chemical Engineering Research and Design"
DOI: 10.1016/j.cherd.2019.02.017
Abstract: Abstract Partial nitritation–anammox process is an interesting process option for biological nitrogen removal from wastewater. Partial nitritation needs to provide about equimolar ammonium and nitrite concentrations as required for the Anammox conversion. This study analyzes… read more here.
Keywords: nitritation; biomass retention; partial nitritation; reactor ... See more keywords
Effect of inorganic carbon limitation on the nitrogen removal performance of the single-stage reactor containing anammox and nitritation gel carriers.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of bioscience and bioengineering"
DOI: 10.1016/j.jbiosc.2021.09.014
Abstract: Herein, the effect of inorganic carbon (IC) limitation on the nitrogen removal performance of the single-stage reactor containing nitritation and anammox gel carriers was investigated. As a result of a continuous feeding test, the effluent… read more here.
Keywords: nitritation; anammox nitritation; gel carriers; effect inorganic ... See more keywords
Robust Nitritation of Anaerobic Digester Centrate Using Dual Stressors and Timed Alkali Additions.
Sign Up to like & getrecommendations! Published in 2021 at "Environmental science & technology"
DOI: 10.1021/acs.est.0c04613
Abstract: Nitrogen is commonly removed from wastewater by nitrification to nitrate followed by nitrate reduction to N2. Shortcut N removal saves energy by limiting ammonia oxidation to nitrite, but nitrite accumulation can be unstable. We hypothesized… read more here.
Keywords: nitritation; sbr; anaerobic digester; digester centrate ... See more keywords
Light Irradiation Enables Rapid Start-Up of Nitritation through Suppressing nxrB Gene Expression and Stimulating Ammonia-Oxidizing Bacteria.
Sign Up to like & getrecommendations! Published in 2021 at "Environmental science & technology"
DOI: 10.1021/acs.est.1c04174
Abstract: Nitritation facilitates the application of anaerobic ammonium oxidation (Anammox)-based processes for cost-efficient nitrogen removal from wastewater. This study proposed light irradiation as a novel strategy to rapidly start up nitritation by stimulating both the activities… read more here.
Keywords: nitritation; start nitritation; light irradiation; oxidizing bacteria ... See more keywords
Predictions of the Influent and Operational Conditions for Partial Nitritation with a Model Incorporating pH Dynamics.
Sign Up to like & getrecommendations! Published in 2018 at "Environmental science & technology"
DOI: 10.1021/acs.est.8b00202
Abstract: Ammonium partial oxidation to nitrite (i.e., partial nitritation) is required in a two-stage autotrophic nitrogen removal system, to provide effluent suitable for the anammox reaction. This study aims to establish influent (ammonium and bicarbonate concentrations)… read more here.
Keywords: influent ammonium; nitritation; partial nitritation; model ... See more keywords
Achieving Stable Partial Nitritation in an Acidic Nitrifying Bioreactor.
Sign Up to like & getrecommendations! Published in 2019 at "Environmental science & technology"
DOI: 10.1021/acs.est.9b04400
Abstract: Partial nitritation providing suitable effluent for subsequent anammox is a critical step in a two-stage autotrophic nitrogen removal system. This study demonstrates an innovative approach for attaining partial nitritation in an acidic bioreactor operating at… read more here.
Keywords: nitritation; bioreactor; partial nitritation; nitritation acidic ... See more keywords