Results 101 to 110 of about 5,332 (201)

Quantifying community dynamics of nitrifiers in functionally stable reactors [PDF]

open access: yes, 2008
A sequential batch reactor (SBR) and a membrane bioreactor (MBR) were inoculated with the same sludge from a municipal wastewater treatment plant, supplemented with ammonium, and operated in parallel for 84 days.
Wittebolle, Lieven   +3 more
core   +1 more source

Adaptive Biofiltration Strategy for an Evolutionary Relic: Assessing Bacterial Consortia for Nitrogen Management in Huso huso Aquaculture

open access: yesJournal of Zoological Systematics and Evolutionary Research, Volume 2025, Issue 1, 2025.
Recirculating aquaculture systems (RASs) represent a sustainable solution for intensive fish production, offering 90%–99% water savings compared to conventional systems while preventing nutrient contamination of natural waterways. The accumulation of nitrogenous compounds, driven by factors, like overfeeding, fish waste, and insufficient water exchange,
Peyman Bagherian   +6 more
wiley   +1 more source

Biogeochemical controls and isotopic signatures of nitrous oxide production by a marine ammonia-oxidizing bacterium [PDF]

open access: yes, 2010
Nitrous oxide (N2O)[N subscript 2 O] is a trace gas that contributes to the greenhouse effect and stratospheric ozone depletion. The N2O [N subscript 2 O] yield from nitrification (moles N2O-N [N subscript 2 O - N] produced per mole ammonium-N consumed ...
Casciotti, K. L., Frame, Caitlin H.
core   +1 more source

Assessment of Nitrifying Bacteria in Massard Plant Using Molecular Tools [PDF]

open access: yes, 2014
The discharge of nutrients (such as nitrogen and phosphorus) from wastewater treatment plants (WWTP) has become an increasingly important issue in the United States.
Holmes-Smith, Jennifer Puanani
core   +1 more source

Denitrification-derived nitric oxide modulates biofilm formation in Azospirillum brasilense [PDF]

open access: yes, 2013
Azospirillum brasilense is a rhizobacterium that provides beneficial effects on plants when they colonize roots. The formation of complex bacterial communities known as biofilms begins with the interaction of planktonic cells with surfaces in response to
Arruebarrena Di Palma, Andrés   +7 more
core   +1 more source

Abundance and diversity of bacterial nitrifiers and denitrifiers and their functional genes in tannery wastewater treatment plants revealed by high-throughput sequencing.

open access: yesPLoS ONE, 2014
Biological nitrification/denitrification is frequently used to remove nitrogen from tannery wastewater containing high concentrations of ammonia. However, information is limited about the bacterial nitrifiers and denitrifiers and their functional genes ...
Zhu Wang   +6 more
doaj   +1 more source

Effect of various factors to ammonia biodegradation by two stage biofiltration system [PDF]

open access: yes, 2007
[Abstract] An autotrophic ammonia-biodegrading PNNS association was isolated from the biological activated sludge of the fish factory wastewater treatment plant and used in the two-stage biofiltration system with the ammonia load 0.78 g/m3h ensured the ...
Berzins, Andrejs   +4 more
core  

Ammonia oxidation: Ecology, physiology, biochemistry and why they must all come together [PDF]

open access: yes, 2018
Ammonia oxidation is a fundamental core process in the global biogeochemical nitrogen cycle. Oxidation of ammonia (NH3) to nitrite (NO2 −) is the first and rate-limiting step in nitrification and is carried out by distinct groups of microorganisms ...
Abby   +87 more
core   +1 more source

KHẢO SÁT MẬT ĐỘ VÀ SỰ ĐA DẠNG CỦA VI KHUẨN NITRATE HÓA TRONG AO NUÔI TÔM

open access: yesTạp chí Khoa học Đại học Cần Thơ, 2011
Kết quả nghiên cứu và thông tin về vi khuẩn chuyển hóa đạm trong ao nuôi tôm sú thâm canh hiện nay chưa nhiều. Việc nghiên cứu động thái của nhóm vi khuẩn này trong ao nuôi tôm sú thâm canh có thể giúp cho quá trình quản lý ao nuôi hiệu quả hơn. Chính vì
Phạm Thị Tuyết Ngân   +2 more
doaj  

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