TY - JOUR A1 - Wiedemann, Leonhard A1 - Conti, Fosca A1 - Saidi, Abdessamad A1 - Sonnleitner, Matthias A1 - Goldbrunner, Markus T1 - Modeling Mixing in Anaerobic Digesters with Computational Fluid Dynamics Validated by Experiments JF - Chemical Engineering & Technology UR - https://doi.org/10.1002/ceat.201800083 KW - Anaerobic digesters KW - Biomass KW - Computational fluid dynamics KW - Mixing KW - Rheology Y1 - 2018 UR - https://doi.org/10.1002/ceat.201800083 SN - 1521-4125 VL - 41 IS - 11 SP - 2101 EP - 2110 PB - Wiley CY - Weinheim ER - TY - CHAP A1 - Conti, Fosca A1 - Wiedemann, Leonhard A1 - Saidi, Abdessamad A1 - Sonnleitner, Matthias A1 - Goldbrunner, Markus T1 - Mixing of a Model Substrate in a Scale-down Laboratory Digester and Processing with a Computational Fluid Dynamics Model T2 - EUBCE 2018 Online Conference Proceedings UR - https://doi.org/10.5071/26thEUBCE2018-2CV.5.34 KW - anaerobic digestion KW - biomass KW - cellulose KW - laboratory digester KW - mixing process KW - fluid dynamic Y1 - 2018 UR - https://doi.org/10.5071/26thEUBCE2018-2CV.5.34 SN - 978-88-89407-18-9 SN - 2282-5819 SP - 811 EP - 815 PB - ETA s.r.l. CY - Florenz ER - TY - JOUR A1 - Conti, Fosca A1 - Wiedemann, Leonhard A1 - Sonnleitner, Matthias A1 - Saidi, Abdessamad A1 - Goldbrunner, Markus T1 - Monitoring the mixing of an artificial model substrate in a scale-down laboratory digester JF - Renewable Energy UR - https://doi.org/10.1016/j.renene.2018.08.013 KW - Laboratory digester KW - Anaerobic digestion KW - Artificial chemical substrate KW - Mixing KW - Particle image velocimetry (PIV) KW - Acoustic Doppler velocimetry (ADV) Computational fluid dynamics (CFD) Y1 - 2018 UR - https://doi.org/10.1016/j.renene.2018.08.013 SN - 0960-1481 VL - 2019 IS - 132 SP - 351 EP - 362 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Conti, Fosca A1 - Wiedemann, Leonhard A1 - Sonnleitner, Matthias A1 - Goldbrunner, Markus T1 - Thermal behaviour of viscosity of aqueous cellulose solutions to emulate biomass in anaerobic digesters JF - New Journal of Chemistry UR - https://doi.org/10.1039/C7NJ03199H Y1 - 2017 UR - https://doi.org/10.1039/C7NJ03199H SN - 1369-9261 VL - 42 IS - 2 SP - 1099 EP - 1104 PB - RSC CY - London ER - TY - JOUR A1 - Conti, Fosca A1 - Wiedemann, Leonhard A1 - Saidi, Abdessamad A1 - Goldbrunner, Markus T1 - Effect of mixing of waste biomass in anaerobic digesters for production of biogas JF - IOP Conference Series: Materials Science and Engineering N2 - Biogas technology is an important renewable bioenergy producer. The biogas generating process needs to be optimized to minimise the energy consumption due to the stirring of biomass slurry. Numerical simulations and laboratory experiments are economically and practically preferred over investigations of industrial scale biogas plants. Additionally, a strategic approach to model the reality in scientific laboratories is to use a rheological valid artificial chemical substrate to replace real biomass. The proposes of this study were (i) to investigate the mixing process in a 1:12 scaled-down home-made laboratory digester filled with a 0.3 wt% water-cellulose solution, (ii) to simulate the mixing process in the laboratory-scale digester using a computational fluid dynamics model, (iii) to validate the model by comparison of the simulation with laboratory experiments results obtained on the laboratory digester. Optical and acoustic measurements on the flow velocity inside the digester during the mixing process of the water-cellulose solutions indicate that the model based on computational fluid dynamics is valid. The data are presented and discussed in the paper. UR - https://doi.org/10.1088/1757-899X/446/1/012011 Y1 - 2018 UR - https://doi.org/10.1088/1757-899X/446/1/012011 UR - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:573-28021 SN - 1757-899X VL - 2018 IS - 446 PB - IOP Publishing CY - London ER -