Articles with "nitrogen removal" as a keyword



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Nitrous oxide production in autotrophic nitrogen removal granular sludge: A modeling study

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Published in 2019 at "Biotechnology and Bioengineering"

DOI: 10.1002/bit.26937

Abstract: The sustainability of autotrophic granular system performing partial nitritation and anaerobic ammonium oxidation (anammox) for complete nitrogen removal is impaired by the production of nitrous oxide (N2O). A systematic analysis of the pathways and affecting… read more here.

Keywords: nitrogen removal; pathway; production; autotrophic nitrogen ... See more keywords
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The co-existence of anammox genera in an expanded granular sludge bed reactor with biomass carriers for nitrogen removal

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Published in 2018 at "Applied Microbiology and Biotechnology"

DOI: 10.1007/s00253-018-9494-3

Abstract: Anaerobic ammonium oxidation (anammox)-based nitrogen removal saves aeration energy and organic carbon costs, attributed to its anaerobic and autotrophic nature. However, due to the slow growth of anaerobic ammonium oxidation bacteria (AnAOB), drawbacks including long… read more here.

Keywords: nitrogen removal; biomass; granular sludge; expanded granular ... See more keywords
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Evaluation of predominant factor for shortcut biological nitrogen removal in sequencing batch reactor at ambient temperature

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Published in 2019 at "Bioprocess and Biosystems Engineering"

DOI: 10.1007/s00449-019-02117-6

Abstract: The shortcut biological nitrogen removal (SBNR) process requires less aeration and external carbon due to the oxidization of ammonia into nitrite and its direct denitrification to nitrogen gas during the biological nitrogen removal process. However,… read more here.

Keywords: nitrogen; nitrogen removal; shortcut biological; biological nitrogen ... See more keywords
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Advanced nitrogen removal without addition of external carbon source in an anaerobic/aerobic/anoxic sequencing batch reactor

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Published in 2019 at "Bioprocess and Biosystems Engineering"

DOI: 10.1007/s00449-019-02148-z

Abstract: Advanced nitrogen removal without the addition of external carbon source is challenging in the conventional biological nitrogen removal processes. This study presented a novel anaerobic/aerobic/anoxic sequencing batch reactor (A/O/A SBR) based on endogenous nitrate (NO3−–N)… read more here.

Keywords: removal without; nitrogen removal; removal; advanced nitrogen ... See more keywords
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Comparison of nitrogen removal efficiency and microbial characteristics of modified two-stage A/O, A2/O and SBR processes

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Published in 2021 at "Environmental Geochemistry and Health"

DOI: 10.1007/s10653-021-00855-9

Abstract: The low temperature of sewage in north China results in low performance of biological treatment at municipal wastewater treatment plants (MWTPs), especially in biological nitrogen removal. A modified two-stage A/O process with an embedded biofilm… read more here.

Keywords: nitrogen; nitrogen removal; modified two; two stage ... See more keywords
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Upscaling nitrogen removal processes in fluvial wetlands and irrigation canals in a patchy agricultural watershed

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Published in 2020 at "Wetlands Ecology and Management"

DOI: 10.1007/s11273-020-09714-3

Abstract: The evaluation of nitrogen (N) removal in aquatic ecosystems within human exploited watersheds may allow the setting of upper limits of N use in agriculture. However, such an evaluation is complex owing to the small… read more here.

Keywords: nitrogen removal; fluvial wetlands; wetlands irrigation; irrigation canals ... See more keywords
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Microbial removal and plant uptake of nitrogen in constructed wetlands: mesocosm tests on influencing factors

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Published in 2018 at "Environmental Science and Pollution Research"

DOI: 10.1007/s11356-018-3543-4

Abstract: Macrophytes and bacteria are key drivers of nitrogen removal in constructed wetlands. Through mesocosm experiments with vegetated submerged beds and free water surface wetlands in various operational modes, wetland configurations, and system layouts, this study… read more here.

Keywords: plant; nitrogen removal; removal; ammonia ... See more keywords
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Achieving single-stage autotrophic nitrogen removal by composite membrane aerated biofilm with gel under two microbial entrapping patterns: experimental and modeling aspects

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Published in 2020 at "Environmental Science and Pollution Research"

DOI: 10.1007/s11356-020-09660-w

Abstract: Single-stage autotrophic nitrogen removal offers advantages of low energy and carbon consumptions. Based on previous work about a novel composite membrane aerated biofilm (CMAB), two microbial entrapping patterns (mixed and stratified patterns) were evaluated for… read more here.

Keywords: single stage; stratified pattern; nitrogen removal; autotrophic nitrogen ... See more keywords
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Improvement of nitrogen removal with iron scraps in floating treatment wetlands

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Published in 2021 at "Environmental Science and Pollution Research"

DOI: 10.1007/s11356-020-12177-x

Abstract: Floating treatment wetland (FTW) in restoration of low C/N ratio wastewater was deemed to a frequently used method. However, the nitrate removal performance in floating beds was limited due to insufficient organic carbon sources. Iron… read more here.

Keywords: floating treatment; iron; iron scraps; nitrogen removal ... See more keywords
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Isolation and Nitrogen Removal Characteristics of an Aerobic Heterotrophic Nitrifying-Denitrifying Bacterium, Klebsiella sp. TN-10

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Published in 2018 at "Applied Biochemistry and Biotechnology"

DOI: 10.1007/s12010-018-02932-9

Abstract: Nitrogen removal by microorganisms has attracted increasing attention in wastewater treatment. In the present study, a heterotrophic nitrification bacterium was isolated from tannery wastewater and identified as Klebsiella sp. TN-10 based on phenotypic and phylogenetic… read more here.

Keywords: nitrogen; bacterium; klebsiella; nitrogen removal ... See more keywords
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Simultaneous Carbon and Nitrogen Removal from Domestic Wastewater using High Rate Vermifilter.

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Published in 2021 at "Indian journal of microbiology"

DOI: 10.1007/s12088-021-00936-4

Abstract: Being a cost-effective and environmentally benign technology, vermifiltration has significantly replaced the available conventional wastewater remediation methods in many cases over the last few decades. The present work emphasizes on the investigation of the nitrogen… read more here.

Keywords: nitrogen; nitrogen removal; removal; wastewater ... See more keywords