Title data
Mlinar, Stanislava ; Weig, Alfons ; Freitag, Ruth:
Influence of mixing and sludge volume on stability, reproducibility, and productivity of laboratory-scale anaerobic digestion.
In: Bioresource Technology Reports.
Vol. 11
(2020)
.
- 100444.
ISSN 2589-014X
DOI: https://doi.org/10.1016/j.biteb.2020.100444
Related research data
Abstract in another language
Anaerobic digestion processes were compared in multiple reactors using glucose and starch as substrates. For reproducibility studies, five reactors were run in parallel as consecutive 7d-batches and supplied with increasing amounts of starch (2 to 13 g L−1). For concentration < 10 g L−1, production of biogas and organic acids as well as the population structure changed but remained similar, while populations split and statistically significant differences in metabolic intermediate concentration and biogas composition/volume were observed at higher starch concentrations. Based on this reproducibility study, the influence of sludge volume and mixing intensity were investigated using reactors with working volumes of 0.75 L and 1.5 L, with and without mechanical mixing. Mixing positively influenced reaction rates at lower substrate concentrations (up to 4 g L−1), while a negative influence on the process stability was observed at higher concentrations. In general, the larger reactors showed better productivities and stabilities than the corresponding smaller ones.
Further data
Item Type: | Article in a journal |
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Refereed: | Yes |
Keywords: | Anaerobic digestion; Reproducibility; Mixing; Productivity; Geometry |
Institutions of the University: | Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology Faculties > Faculty of Engineering Science Faculties > Faculty of Engineering Science > Chair Process Biotechnology Faculties > Faculty of Engineering Science > Chair Process Biotechnology > Chair Process Biotechnology - Univ.-Prof. Dr. Ruth Freitag Graduate Schools > TAO-Graduiertenkolleg Energieautarke Gebäude Graduate Schools |
Result of work at the UBT: | Yes |
DDC Subjects: | 500 Science > 570 Life sciences, biology |
Date Deposited: | 29 May 2020 08:37 |
Last Modified: | 01 Jun 2023 12:14 |
URI: | https://eref.uni-bayreuth.de/id/eprint/55187 |