Three-phase-bioreactor scalability and Anaerobic Digestion-retrofitting analysis.
Host – Technische Universität Wien, Austria
The retrofitting of existing Anaerobic Digestion (AD) reactors requires that existing AD units to be synergistically integrated as TBP’s 2nd phase reactors. However, AD configurations vary significantly with regard to geometries of mixers, power input requirements, feedstock rheology, fermenter geometry (size and presence of baffles etc.) and gas productivity. To find cost effective and optimally operated retrofitting, nowadays modelling is preferably applied to predict and quantify possible achievements before any pilot or full-scale deployment can be commissioned. Computational Fluid Dynamics (CFD) which allows the time-resolved calculation of 3D flow fields to analyse local velocities, turbulence, pressure, concentration, shear rate dependent viscosity effects, local reaction rates and more will be implemented to achieve this. The successful candidate will work with the experienced CFD researchers’ team at TUW.
Initially based in TUW and under the supervision of Prof. Harasek with input from Mr. Mandl (TBWR), the successful candidate will:
- Learn opensource CFD modelling focussing on the computation of large-scale AD reactors,
- Develop and implement modelling concepts based on DoE to improve the geometric design and to find optimal operating conditions under design constraints e.g. with regard to retrofitting,
- Be seconded to European Biogas Association (Belgium) to gather process data on existing AD systems,
- Stay with Enviro-Eye Engineering (Ireland) under the supervision of Mr. Galvin to learn about the application of “Energy Efficient Design” according to IS399/ISO50001 standards,
- Disseminate an open source CFD toolbox for the flow investigation of the TPB systems.