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Fundamentals of energy storage in electrochemically active biofilms

The Institute of Environmental and Sustainable Chemistry, TU Braunschweig, Germany, is looking for an excellent Phd student to support our interdisciplinary research project “Fundamentals of canode biofilm electro-metabolism”. Microbial electrogenesis – the electricity production from organic compounds such as those found in wastes or marine sediments – and microbial electrosynthesis – the reduction of CO2 into organic energy storage molecules, are two prime application goals for microbial electrochemical technologies. Recent findings by the team of Dr. Leonard Tender from the Naval Research Laboratory in Washington, DC illustrate the possibility of combining electrotrophy and electrogenesis in one, switchable electrode-grown biofilm denoted as canode biofilm (cathode/anode). The canode opens new ways to combine bioelectrochemical energy storage and power generation in a single device. But what are the mechanisms of the underlying metabolic processes, and how is the electrotrophic and electrogenic metabolism coupled with the extracellular electron transfer that connects cellular processes with the electrode? Single investigation methods, such as voltammetry or spectroscopy alone, will not allow achieve sufficient information depth. Only by combining these methods (so-called hyphenated techniques) to probe real-times changes in molecular signatures of the canode, as it switched for energy storage to power generation modes, can information down to ...
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PhD position in bioelectrochemical enrichment of metals

The University of Bremen is offering (under the condition of job release) at the earliest possible date: Ph.D. position in bioelectrochemical enrichment of metals
Salary group 13 TV-L (75 %), 36 months in an interdisciplinary project at the interface of microbiology, electrochemistry and material sciences. The motivation of this PhD project is the search for new technological approaches for the extraterrestrial fabrication of metal alloys under tough environmental constraints, in particular the limitation of utilizing mineral and energy resources available in situ on Mars or Moon. More specifically, the project aims at exploring bio-based possibilities to extract iron species from regolith and enrich them as purified iron compounds. These compounds are then used in steel-making processes based on non-conventional metallurgy. In this sub project, microbial electrochemical technologies such as microbial fuel cells (MFCs) and microbial electrolysis cells (MECs) will be used for enhanced production and selective recovery of metal ion species. Microbial communities developing in MFCs will be characterized using state-of-the-art tools such as high-throughput sequencing, metagenomics and metatranscriptomics. Within the new research initiative in close collaboration with the Hochschule Bremen (HSB), Ph.D. students are supervised by a team of experienced scientists ranging from electrochemistry, material sciences to microbiology and biomimetics ...
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PhD position on electron conduction in cable bacteria

Cable bacteria are filamentous bacteria that can conduct electrons across centimetre-scale distances and thereby metabolize distantly located electron donors and acceptors in aquatic sediment. The DNRF Center for Electromicrobiology at Aarhus University is looking for a motivated and talented PhD student to investigate how cable bacteria and their electron conductors work, based on the numerous options and challenges that this exceptional scale of biological electron transport poses for experimental studies. Institution contact information Department of Biology, Ny Munkegade 114-116, Aarhus C, Denmark. Contact email address External link ...
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