Results 81 to 90 of about 1,651 (222)

Influence of Temperature and Dissolved Oxygen on Nitrogen and Phosphorus Removal of Integrated Bioreactor [PDF]

International Journal Bioautomation, 2017
An integrated biological membrane sewage treatment device has been designed based on the mechanism of microorganism nitrogen and phosphorus removal and the influence of temperature and dissolved oxygen on nitrogen and phosphorus removal of integrated ...
Chunying Wu, Lixiu Guo
doaj  

Simultaneous autotrophic denitrification and nitrification in a low-oxygen reaction environment

Water Science and Technology, 2014
The occurrence of autotrophic denitrification and nitrification activities by ammonia-oxidising bacteria and nitrite-oxidising bacteria is studied in a bioreactor system operable at low-dissolved oxygen (DO) and at variable oxygen influx rates.
Ganapathy, Ramanathan, Christopher M, Sales, Wen K, Shieh   +2 more
openaire   +2 more sources

Tillage does not impact soil greenhouse gas emissions in a Central Texas rainfed maize–cotton system

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Agricultural soils are a significant source of greenhouse gas (GHG) emissions, primarily as N2O. Monitoring how management practices impact soil gas fluxes (CO2, CH4, and N2O) is useful for making sure conservation practices (e.g., no‐till) are sustainable with regards to all potential environmental impacts.
Dorothy Menefee, Hal Collins, Doug Smith
wiley   +1 more source

Study on Simultaneous Biological Nitrogen and Phosphorus Removalin New Sequencing Batch Biofilm Reactor System

工程科学与技术, 2008
:In order to improve the efficiency of biological treatment of living sewage with rich nitrogen and phosphorus, and reduce the carbon source, the character of simultaneous nitrification and denitrification and biological phosphorus removal of ...
doaj  

Application of Bioelectrochemical System in Nitrogen Removal via Simultaneous Autotrophic Nitrification and Denitrification from Wastewater

ChemElectroChem
Bioelectrochemical systems (BES) is a new and expanding technology that can simultaneously convert chemical energy into electrical energy by removing nutrients. The present study investigated the BES in removing nitrogen compounds and produce electricity.
Parisa Ebrahimzadeh, Nahid Navidjouy, Hassan Khorsandi, Mostafa Rahimnejad   +3 more
doaj   +1 more source

Development of aerobic micro granular sludge in a sequencing batch airlift reactor for simultaneous removal of COD, NH4+, PO43-, and SO42-

Chemical Engineering Journal Advances
This study investigates the long-term effectiveness of an automated Sequencing Batch Airlift Reactor (SBAR) in simultaneous removal of COD, NH4+, PO43, and SO42− by developing aerobic micro granular sludge.
Kunnath Saidalavi Shameem, Pothanamkandathil Chacko Sabumon   +1 more
doaj   +1 more source

Optimisation of aeration for activated sludge treatment with simultaneous nitrification denitrification

Water Science and Technology, 2008
Following a promising study at pilot scale a new aeration control law has been implemented at a full scale wastewater treatment plant displaying a conventional activated sludge process. The new control law is based on the direct measurements of ammonium and nitrate concentration in the biological tank by ion selective electrodes.
David, Thauré, Cyrille, Lemoine, Olivier, Daniel, Nader, Moatamri, Julien, Chabrol   +4 more
openaire   +2 more sources

Substitution of fiber hemp for corn did not affect soil greenhouse gas emissions from a Kentucky cropping system

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Industrial hemp's return to American agriculture has been accompanied by claims of the crop's carbon neutrality, primarily due to its commercial applications. While carbon can be sequestered within products made with hemp fiber, there is little empirical evidence quantifying greenhouse gas contributions from the crop's production.
Kent Pham, Rebecca K. McGrail, Luke A. Moe, Robert Pearce, Rebecca L. McCulley   +4 more
wiley   +1 more source

Organic‐matter sources and stability in kettle‐hole sediments: A combined thermogravimetric and isotopic approach

Agrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Kettle‐holes are small but biogeochemically active landscape elements that integrate terrestrial inputs and influence carbon and nitrogen cycling. However, the stability and sources of organic matter (OM) in kettle‐hole sediments remain poorly understood.
Safdar Bashir, Kai Nils Nitzsche, Zachary Kayler   +2 more
wiley   +1 more source

Key Drivers of Soil CO2, CH4, and N2O Fluxes in Conifer and Broadleaf Afforestation Systems in the Southeastern U.S.: A Machine Learning Analysis

Global Change Biology Communications, Volume 1, Issue 3, September 2026.
Soil CO2 and CH4 emissions were higher in broadleaf than conifer afforestation systems in the southeastern U.S., particularly during the growing season. Machine learning analyses identified soil temperature, moisture, and atmospheric conditions as key drivers, emphasizing that soil greenhouse gas responses critically influence the climate mitigation ...
Jianing Liang, Austin Himes, Cade Booth, Troy Bowman, Olivia Buchanan, Gregory Bushey, Grethel Capistran, Sidnee Everhart, Natalie Dearing, Shaik Hossain, Joshua Granger, Samantha Humphrey, Dawn Lemke, Mark McConnell, Adam Polinko, Rebecca Pope, Krishna Poudel, Logan Pruitt, Nasir Qadir, Heidi Renninger, Morné le Roux, Kris Shelby, Jeremy Whigham, Jia Yang, Courtney Siegert   +24 more
wiley   +1 more source