Results 11 to 20 of about 817,315 (310)

Experimental study on nitrification in a submerged aerated biofilter [PDF]

, 2004
The aim of the present work was to evaluate the performance of a semi-pilot scale BAF in order to obtain a highly polished effluent in terms of removal of organic matter, suspended solids and ammonia and to observe the influence of temperature, pH and ...
Chiavola, Agostina, Farabegoli, Geneve, Rolle, Enrico, Stracquadanio, Stefano   +3 more
core   +2 more sources

Determination of Trace Silver in Geological Samples by Inductively Coupled Plasma-Mass Spectrometry with Acid Decomposition and Internal Standard Calibration

Yankuang ceshi, 2021
BACKGROUND Inductively coupled plasma-mass spectrometry (ICP-MS) is used for the determination of trace silver in geological samples. Hydroxides and oxides of Zr, Nb, Mo cause serious overlapping interference on the two mass numbers of 107Ag and 109Ag ...
LIU Hai-ming, WU Ming-li, CHENG Jing-te
doaj   +1 more source

Removal of ammonia from anaerobic co-digestion effluent of organic fraction of food waste and domestic wastewater using air stripping process

Vietnam Journal of Science, Technology and Engineering, 2022
In this study, a continuous ammonium stripping lab-scale model of anaerobic co-digestion effluent from an organic fraction of food waste and domestic wastewater was used to investigate ammonium removal efficiency by air stripping.
Lan Huong Nguyen, Hong Ha Bui, Xuan Truong Nguyen   +2 more
doaj   +1 more source

Ultrafast Molecular Transport on Carbon Surfaces: The Diffusion of Ammonia on Graphite [PDF]

, 2017
We present a combined experimental and theoretical study of the self-diffusion of ammonia on exfoliated graphite. Using neutron time-of-flight spectroscopy we are able to resolve the ultrafast diffusion process of adsorbed ammonia, NH$_3$, on graphite ...
Calvo-Almazán, Irene, Ernst, Wolfgang E., Fouquet, Peter, Koza, Marek M., Sacchi, Marco, Tamtögl, Anton, Zbiri, Mohamed   +6 more
core   +2 more sources

Direct Numerical Simulation of a Reacting Turbulent Hydrogen/Ammonia/Nitrogen Jet in an Air Crossflow at 5 Bar

Energies, 2023
The article aims to analyze the fluid dynamics and combustion characteristics of a non-premixed flame burning a fuel mixture derived from ammonia partial decomposition injected in an air crossflow.
Eugenio Giacomazzi, Donato Cecere, Matteo Cimini, Simone Carpenella   +3 more
doaj   +1 more source

Selective low concentration ammonia sensing in a microfluidic lab-on-a-chip [PDF]

, 2006
In the medical community, there is a considerable interest in a diagnostic breath analyzer for ammonia that is selectively enough to measure in exhaled air and small enough for the small volumes available in such an application.
Berg, Albert van den, Delft, Koen M. van, Koelmans, W.W., Olthuis, Wouter, Timmer, Björn H.   +4 more
core   +3 more sources

Influence of Structural Parameters of Tesla Valve Flow Field on Performance of Fuel Cells

Energies
The optimization of flow channel structures significantly impacts the performance enhancement of proton exchange membrane fuel cells (PEMFCs). In this paper, the influences of the loop radius, inclination angle, and presence of the island in the Tesla ...
Hui Guo, Shaopeng Tian, Long Wang, Congda Xiao, Yuxin Pan, Wenlong Xie, Shujin Yang   +6 more
doaj   +1 more source

Radical Chemistry in a Femtosecond Laser Plasma: Photochemical Reduction of Ag+ in Liquid Ammonia Solution [PDF]

, 2018
Plasmas with dense concentrations of reactive species such as hydrated electrons and hydroxyl radicals are generated from focusing intense femtosecond laser pulses into aqueous media. These radical species can reduce metal ions such as Au3+ to form metal
Ahsan, Syeda, Frias Batista, Laysa M, John, Mallory G, Meader, Victoria K, Tibbetts, Katharine M   +4 more
core   +3 more sources

Toward Reliable FOWT Modeling: A New Calibration Approach for Extreme Environmental Loads

Energies
The current paper presents a comparative analysis between a high-fidelity simulation tool and computational fluid dynamics (CFD) in evaluating the behavior of a fully coupled floating offshore wind turbine (FOWT) system subjected to three distinct design
Ho-Seong Yang, Ali Alkhabbaz, Young-Ho Lee   +2 more
doaj   +1 more source

Research on the technical scheme of multi-stack common rail fuel cell engine based on the demand of commercial vehicle

Energy and AI
At present, most fuel cell engines are single-stack systems, and high-power single-stack systems have bottlenecks in meeting the power requirements of heavy-duty trucks, mainly because the increase in the single active area and the excessive number of ...
Ji Pu, Qianya Xie, Jun Li, Ziliang Zhao, Junming Lai, Kang Li, Fojin Zhou   +6 more
doaj   +1 more source