Results 21 to 30 of about 843,119 (311)

Nitrogen Removal in Mangroves Constructed Wetland [PDF]

open access: yes, 2018
The potential use of Mangroves Constructed Wetland (MCW) as a low cost, efficient and suitable method for nitrogen removal from sewage in coastal zone of urban cities was examined in Dar es Salaam, Tanzania.
Mahenge, A. S. (Anesi)
core   +1 more source

Nitrogen Removal by HN-AD Bacteria Immobilized on Modified Absorbent Stone [PDF]

open access: yesChemical and Biochemical Engineering Quarterly, 2020
How to simplify the nitrogen removal process, reduce the cost and improve the efficiency has become an urgent problem to be solved. In this research, the isolated HNAD (heterotrophic nitrification and aerobic denitrification) bacteria were used to remove
W. Zhang, Z. Zhang, S. Wang
doaj   +1 more source

Enrichment and characterization of a bacteria consortium capable of heterotrophic nitrification and aerobic denitrification at low temperature [PDF]

open access: yes, 2013
Nitrogen removal in wastewater treatment plants is usually severely inhibited under cold temperature. The present study proposes bioaugmentation using psychrotolerant heterotrophic nitrification-aerobic denitrification consortium to enhance nitrogen ...
Borthwick, Alistair G. L.   +3 more
core   +1 more source

Design methodologies to determine optimal staging of membrane-aerated biofilm reactors for mainstream treatment with anammox

open access: yesWater Science and Technology, 2022
Partial nitritation anammox (PNA) membrane-aerated biofilm reactors (MABRs) can be used in mainstream nitrogen removal to help facilities reduce their energy consumption.
Brett M. Wagner   +2 more
doaj   +1 more source

Low threshold for nitrogen concentration saturation in headwaters increases regional and coastal delivery

open access: yesEnvironmental Research Letters, 2020
River corridors store, convey, and process nutrients from terrestrial and upstream sources, regulating delivery from headwaters to estuaries. A consequence of chronic excess nitrogen loading, as supported by theory and field studies in specific ...
Noah M Schmadel   +7 more
doaj   +1 more source

Interconversion and Removal of Inorganic Nitrogen Compounds via UV Irradiation

open access: yesChemEngineering, 2023
Dissolved inorganic nitrogen (DIN) species are key components of the nitrogen cycle and are the main nitrogen pollutants in groundwater. This study investigated the interconversion and removal of the principal DIN compounds (NO3−, NO2− and NH4+) via UV ...
Alejandro M. Senn, Natalia Quici
doaj   +1 more source

Shortcut Biological Nitrogen Removal (SBNR) in an MFC anode chamber under microaerobic conditions. The effect of C/N ratio and kinetic study [PDF]

open access: yes, 2018
In this work, the feasibility of the Shortcut Biological Nitrogen Removal (SBNR) in the anodic chamber of a Microbial Fuel Cell (MFC) was investigated.
Bavasso, Irene   +3 more
core   +5 more sources

Artificial wetlands performance: nitrogen removal

open access: yesWater Science and Technology, 2008
Artificial wetlands (AW) are a promising option for wastewater treatment in small communities due to their high performance in nutrients removal and low operation and maintenance costs. Nitrogen can favour the growth of algae in water bodies causing eutrophication when present at high concentrations. Nitrogen can be removed through different mechanisms
Carmen, Durán-de-Bazúa   +4 more
openaire   +2 more sources

Dynamic modeling of nitrogen losses in river networks unravels the coupled effects of hydrological and biogeochemical processes [PDF]

open access: yes, 2009
The importance of lotic systems as sinks for nitrogen inputs is well recognized. A fraction of nitrogen in streamflow is removed to the atmosphere via denitrification with the remainder exported in streamflow as nitrogen loads.
Alexander, Richard B.   +9 more
core   +2 more sources

Nitrogen phytoremediation by water hyacinth (Eichhornia crassipes (Mart.) Solms) [PDF]

open access: yes, 2008
The phytoremediation potential of water hyacinth, Eichhornia crassipes (Mart.) Solms, was examined in two independent studies under nitrogen (N) rates of 0, 40, 80, 100, 150, 200, and 300 ppm.
Appleton, B.L.   +3 more
core   +2 more sources

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