Searched for: subject:"nitrogen"
(1 - 20 of 64)

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Subramanian, S.S. (author), Chukwuike, V. I. (author), Kulandainathan, M. Anbu (author), Barik, Rakesh C. (author)
Electrochemical reduction of CO<sub>2</sub> has received significant interest for converting CO<sub>2</sub> to value added products and closing the carbon cycle. Recent advances through catalyst development have aided in satisfying the requirements of achieving a high product selectivity, activity and long-term stability. Among various...
journal article 2020
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Watari, Takahiro (author), Vazquez, Carlos Lopez (author), Hatamoto, Masashi (author), Yamaguchi, Takashi (author), van Lier, J.B. (author)
Anaerobic ammonia oxidation to nitrogen gas using nitrite as the electron acceptor (anammox process) is considered a cost-effective solution for nitrogen removal after an anaerobic pre-treatment process. In this study, we conducted a laboratory-scale experiment to develop a single-stage partial nitritation–anammox process in a sponge-based...
journal article 2020
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Samylina, Olga S. (author), Namsaraev, Zorigto B. (author), Slobodova, Natalia V. (author), Zelenev, Vladimir V. (author), Borisenko, Gennadii V. (author), Sorokin, D. (author)
Nitrogen fixation (NF) of phototrophic communities was studied in a number of soda lakes with a wide range of salinity (25-400 g/l) located in Kulunda Steppe (Altai, Russia) during several summer seasons (2011-2016). The phototrophic communities were represented by the algal-bacterial Ctenocladus communities or cyanobacterial biofilms...
journal article 2019
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van der Hoek, J.P. (author), Duijff, R. (author), Reinstra, Otto (author)
Due to an increased food production the demand for nitrogen and phosphorus as fertilizers grows. Nitrogen based fertilizers are produced with the Haber-Bosch process through industrial fixation of N2 into ammonia. Through wastewater treatment the nitrogen is finally released back to the atmosphere as N2 gas. This nitrogen cycle is characterized...
book chapter 2019
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Griffin, Debora (author), Zhao, Xiaoyi (author), McLinden, Chris A. (author), Boersma, Folkert (author), Bourassa, Adam (author), Dammers, Enrico (author), Degenstein, Doug (author), Eskes, Henk (author), Veefkind, j. Pepijn (author)
TROPOspheric Monitoring Instrument (TROPOMI), on-board the Sentinel-5 Precurser satellite, is a nadir-viewing spectrometer measuring reflected sunlight in the ultraviolet, visible, near-infrared, and shortwave infrared. From these spectra several important air quality and climate-related atmospheric constituents are retrieved, including nitrogen...
journal article 2019
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Ruf, M.T. (author), IJspeert, M. (author), van Dam, S.B. (author), de Jong, N. (author), van den Berg, J.H. (author), Evers, G.P.H. (author), Hanson, R. (author)
Diamond membrane devices containing optically coherent nitrogen-vacancy (NV) centers are key to enable novel cryogenic experiments such as optical ground-state cooling of hybrid spin-mechanical systems and efficient entanglement distribution in quantum networks. Here, we report on the fabrication of a (3.4 ± 0.2) μm thin, smooth (surface...
journal article 2019
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Ilgrande, Chiara (author), Mastroleo, Felice (author), Christiaens, Marlies E.R. (author), Lindeboom, R.E.F. (author), Prat, Delphine (author), Van Hoey, Olivier (author), Ambrozova, Iva (author), Coninx, Ilse (author), Heylen, Wietse (author)
To sustain human deep space exploration or extra-terrestrial settlements where no resupply from the Earth or other planets is possible, technologies for in situ food production, water, air, and waste recovery need to be developed. The Micro-Ecological Life Support System Alternative (MELiSSA) is such a Regenerative Life Support System (RLSS)...
journal article 2019
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Vavourakis, Charlotte D. (author), Mehrshad, Maliheh (author), Balkema, Cherel (author), Van Hall, Rutger (author), Andrei, Adrian Ştefan (author), Ghai, Rohit (author), Sorokin, Dimitry Y. (author), Muyzer, Gerard (author)
Background: The planetary sulfur cycle is a complex web of chemical reactions that can be microbial-mediated or can occur spontaneously in the environment, depending on the temperature and pH. Inorganic sulfur compounds can serve as energy sources for specialized prokaryotes and are important substrates for microbial growth in general. Here,...
journal article 2019
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van der Hoek, J.P. (author), Duijff, R. (author), Reinstra, Otto (author)
Due to increased food production, the demand for nitrogen and phosphorus as fertilizers grows. Nitrogen-based fertilizers are produced with the Haber-Bosch process through the industrial fixation of N2 into ammonia. Through wastewater treatment, the nitrogen is finally released back to the atmosphere as N2 gas. This nitrogen cycle is...
journal article 2018
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Agarwal, Girish (author), Allen, Roland E. (author), Bezděková, Iva (author), Boyd, Robert W. (author), Chen, Goong (author), Hanson, R. (author), Hawthorne, Dean L. (author), Hemmer, Philip (author), Kim, Moochan B. (author), Kocharovskaya, Olga (author), Lee, D. (author), Lidström, Sebastian K. (author), Lidström, Suzy (author), Losert, Harald (author), Maier, Helmut (author), Neuberger, John W. (author), Padgett, Miles J. (author), Raizen, Mark (author), Rajendran, Surjeet (author), Rasel, Ernst (author), Schleich, Wolfgang P. (author), Scully, Marlan O. (author), Shchedrin, Gavriil (author), Shvets, Gennady (author), Sokolov, Alexei (author), Svidzinsky, Anatoly (author), Walsworth, Ronald L. (author), Weiss, Rainer (author), Wilczek, Frank (author), Willner, Alan E. (author), Yablonovich, Eli (author), Zheludev, Nikolay (author)
The Winter Colloquium on the Physics of Quantum Electronics (PQE) has been a seminal force in quantum optics and related areas since 1971. It is rather mind-boggling to recognize how the concepts presented at these conferences have transformed scientific understanding and human society. In January 2017, the participants of PQE were asked to...
journal article 2018
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Dereli, R.K. (author), Wang, Xiaofei (author), van der Zee, F. (author), van Lier, J.B. (author)
The impact of nitrogen on biological performance and sludge filterability of anaerobic membrane bioreactors was investigated in two lab-scale cross-flow anaerobic membrane bioreactors that were fed with cheese whey at two different COD:TKN ratios (50 and 190). Nitrogen deprivation adversely affected the biological treatment performance and...
journal article 2018
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Wang, R. (author), Sun, Xiaohui (author), Ould-Chikh, Samy (author), Osadchii, Dmitrii (author), Bai, Fan (author), Kapteijn, F. (author), Gascon, Jorge (author)
A nitrogen-doped carbon was synthesized through the pyrolysis of the well-known metal-organic framework ZIF-8, followed by a subsequent acid treatment, and has been applied as a catalyst in the electrochemical reduction of carbon dioxide. The resulting electrode shows Faradaic efficiencies to carbon monoxide as high as ∼78%, with hydrogen...
journal article 2018
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Namsaraev, Zorigto (author), Samylina, Olga (author), Sukhacheva, Marina (author), Borisenko, Gennadii (author), Sorokin, Dimitry Y. (author), Tourova, Tatiana (author)
Bitter-1 is a shallow hypersaline soda lake in Kulunda Steppe (Altai region, Russia). During a study period between 2005 and 2016, the salinity in the littoral area of the lake fluctuated within the range from 85 to 400 g/L (in July of each year). Light-dependent nitrogen fixation occurred in this lake up to the salt-saturating conditions....
journal article 2018
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van Dam, S.B. (author), Ruf, M.T. (author), Hanson, R. (author)
Defect centres in diamond are promising building blocks for quantum networks thanks to a long-lived spin state and bright spin-photon interface. However, their low fraction of emission into a desired optical mode limits the entangling success probability. The key to overcoming this is through Purcell enhancement of the emission. Open Fabry...
journal article 2018
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Hoekstra, M. (author), Geilvoet, Stefan P. (author), Hendrickx, Tim L.G. (author), van Erp Taalman Kip, Charlotte S. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
The aim of this research was to study the biological feasibility of the Partial Nitritation/Anammox (PN/A) technology to remove nitrogen from municipal mainstream wastewaters. During stable process operations at summer temperatures (23.2 ± 1.3°C), the total nitrogen removal rate was 0.223 ± 0.029 kg N (m<sup>3 </sup>d)<sup>−1</sup> while at...
journal article 2018
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Hoekstra, M. (author)
Currently wastewater treatment plants (WWTP) consume a lot of energy and surface area. While the incoming water contains chemical energy (BOD) and reusable resources which are not effectively utilized. The ideal is to develop a treatment scheme which allows for the efficient removal of pollutants while minimizing the energy input and maximizing...
doctoral thesis 2017
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Cueto Rojas, H.F. (author), Milne, Nicholas (author), van Helmond, W. (author), Pieterse, M.M. (author), Maris, Antonius J A (author), Daran, J.G. (author), Wahl, S.A. (author)
Background: Microbial production of nitrogen containing compounds requires a high uptake flux and assimilation of the N-source (commonly ammonium), which is generally coupled with ATP consumption and negatively influences the product yield. In the industrial workhorse Saccharomyces cerevisiae, ammonium (NH<sub>4</sub> <sup>+</sup>) uptake is...
journal article 2017
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Hoekstra, M. (author), de Weerd, F.A. (author), Kleerebezem, R. (author), van Loosdrecht, Mark C.M. (author)
The implementation of autotrophic nitrogen removal in the mainstream of a municipal wastewater treatment plant is currently pursued. Among the crucial unknown factors are the kinetic properties of anaerobic ammonium oxidising (anammox) bacteria at low temperatures. In this study we investigated the adaptation of a fast-growing anammox culture...
journal article 2017
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van Dam, S.B. (author), Humphreys, P.C. (author), Rozpedek, F.D. (author), Wehner, S.D.C. (author), Hanson, R. (author)
Quantum networks distributed over distances greater than a few kilometres will be limited by the time required for information to propagate between nodes. We analyse protocols that are able to circumvent this bottleneck by employing multi-qubit nodes and multiplexing. For each protocol, we investigate the key network parameters that determine...
journal article 2017
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Grewe, V. (author), Dahlmann, K. (author), Flink, J. (author), Frömming, C. (author), Ghosh, R. (author), Gierens, K. (author), Heller, R (author), Hendricks, J. (author), Jockel, P. (author), Kaufmann, S. (author), Kölker, K. (author), Linke, F. (author), Luchkova, T. (author), Lührs, B. (author), van Manen, Jesper (author), Matthes, S (author), Minikin, A. (author), Niklaß, Malte (author), Plohr, M. (author), Righi, M. (author), Rosanka, S. (author), Schmitt, A (author), Schumann, U (author), Terekhov, I. (author), Unterstrasser, S. (author), Vázquez-Navarro, M. (author), Voigt, C. (author), Wicke, K. (author), Yamashita, H. (author), Zahn, A. (author), Ziereis, H. (author)
The WeCare project (Utilizing Weather information for Climate efficient and eco efficient future aviation), an internal project of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt, DLR), aimed at finding solutions for reducing the climate impact of aviation based on an improved understanding of the atmospheric impact from...
journal article 2017
Searched for: subject:"nitrogen"
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