Conference Proceeding
Refine
Year of publication
- 2016 (66) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (13)
- Fachbereich Elektrotechnik und Informationstechnik (12)
- Fachbereich Luft- und Raumfahrttechnik (12)
- IfB - Institut für Bioengineering (12)
- Fachbereich Chemie und Biotechnologie (8)
- Fachbereich Bauingenieurwesen (7)
- Fachbereich Energietechnik (7)
- Fachbereich Maschinenbau und Mechatronik (6)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (4)
- ECSM European Center for Sustainable Mobility (3)
Language
- English (66) (remove)
Document Type
- Conference Proceeding (66) (remove)
Keywords
- Assessment (1)
- Building Systems (1)
- Business Simulations (1)
- Diversity (1)
- Drinking Water Supply (1)
- Engineering Education (1)
- Gamification (1)
- Gender (1)
- Higher Education (1)
- Mixed-Integer Nonlinear Optimisation (1)
Is part of the Bibliography
- no (66)
Air-water flows can be found in different engineering applications: from nuclear engineering to huge hydraulic structures. In this paper, a single tip fibre optical probe has been used to record high frequency (over 1 MHz) phase functions at different locations of a stepped spillway. These phase functions have been related to the interfacial velocities by means of Artificial Neural Networks (ANN) and the measurements of a classical double tip conductivity probe. Special attention has been put to the input selection and the ANN dimensions. Finally, ANN have shown to be able to link the signal rising times and plateau shapes to the air-water interfacial velocity.
Electromicrobial engineering is an emerging, highly interdisciplinary research area linking bioprocesses with electrochemistry. In this work, microbial electrosynthesis (MES) of biobutanol is carried out during acetone-butanol-ethanol (ABE) fermentations with Clostridium acetobutylicum. A constant electric potential of −600mV (vs. Ag/AgCl) with simultaneous addition of the soluble redox mediator neutral red is used in order to study the electron transfer between the working electrode and the bacterial cells. The results show an earlier initiation of solvent production for all fermentations with applied potential compared to the conventional ABE fermentation. The f inal butanol concentration can be more than doubled by the application of a negative potential combined with addition of neutral red. Moreover a higher biofilm formation on the working electrode compared to control cultivations has been observed. In contrast to previous studies, our results also indicate that direct electron transfer (DET) might be possible with C. acetobutylicum. The presented results make microbial butanol production economically attractive and therefore support the development of sustainable production processes in the chemical industry aspired by the “Centre for resource-efficient chemistry and raw material change” as well as the the project “NanoKat” working on nanostructured catalysts in Kaiserslautern.