Nitrogen

  • Aerobic processes compete for nitrogen in oxygen minimum zones

    Methodically, this was pioneering work: Without highly-sensitive oxygen sensorsit would not have been possible. The developers of the so-called STOX sensors supported Bristow in this study. Laura Tiano

    At the margins of oxygen minimum zones (OMZs) at ultralow oxygen concentrations, aerobic ammonium and nitrite oxidizers compete for nitrogen with anaerobic microorganisms. Thus they play an important but so far overlooked role in controlling nitrogen loss in OMZs.

  • MIKE macht Biogasanlagen effizienter: Neues BMBF-Projekt zur stofflichen Nutzung von CO2 gestartet

    DECHEMA Forschungsinstitut

    Höhere Biogasausbeute, keine aufwändige CO2-Abtrennung und Überschussstrom wird sinnvoll genutzt: Das alles soll MIKE leisten, das BMBF-Projekt „Methanisierung von CO2 aus Biogas mittels mikrobieller Elektrosynthese“, das seit dem 1. September 2016 läuft. Koordinator des Projektes ist Dr.-Ing. Dirk Holtmann vom DECHEMA Forschungsinstitut. In Kooperation mit der ifn FTZ GmbH in Elsteraue, der Infraserv GmbH & Co. Höchst KG sowie der Provadis School of International Management and Technology soll ein elektrobiotechnologisches Verfahren zur Umsetzung des CO2 entwickelt werden.

  • Small bug, large impact: A new key player in the marine nitrogen cycle

    The small symbiosis of UCYN-A with a unicellular alga looks inconspicuous, but it seems to be a key player in the marine nitrogen cycle (green: UCYN-A-cell, orange/blue: algal cell). Clara Martínez-Pérez /Max-Planck-Institute for Marine Microbiology

    A study published in Nature Microbiology shows for the first time that a small nitrogen-fixing symbiosis contributes extensively to the total nitrogen fixation in the tropical North Atlantic. Nitrogen fixation is the largest source of nitrogen to the open ocean, and this symbiosis is thus a key player in the marine nitrogen cycle.