Kaul, Anja and Boellmann, Andrea and Thema, Martin and Kalb, Larissa and Stoeckl, Richard and Huber, Harald and Sterner, Michael and Bellack, Annett (2022) Combining a robust thermophilic methanogen and packing material with high liquid hold-up to optimize biological methanation in trickle-bed reactors. BIORESOURCE TECHNOLOGY, 345: 126524. ISSN 0960-8524, 1873-2976
Full text not available from this repository. (Request a copy)Abstract
The hydrogen gas-to-liquid mass transfer is the limiting factor in biological methanation. In trickle-bed reactors, mass transfer can be increased by high flow velocities in the liquid phase, by adding a packing material with high liquid hold-up or by using methanogenic archaea with a high methane productivity. This study developed a polyphasic approach to address all methods at once. Various methanogenic strains and packings were investigated from a microbial and hydrodynamic perspective. Analyzing the ability to produce high-quality methane and to form biofilms, pure cultures of Methanothermobacter performed better than those of the genus Methanothermococcus. Liquid and static hold-up of a packing material and its capability to facilitate attachment was not attributable to a single property. Consequently, it is recommended to carefully match organism and packing for optimized performance of trickle-bed reactors. The ideal combination for the ORBIT system was identified as Methanothermobacter thermoautotrophicus IM5 and DuraTop (R).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BIOCATALYTIC METHANATION; CARBON-DIOXIDE; MASS-TRANSFER; HYDROGEN; THERMOAUTOTROPHICUS; NOV.; Optimized packing-organism combination; Liquid hold-up maximization; Methanothermobacter; Methanothermococcus; Methane production |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Biochemie, Genetik und Mikrobiologie > Lehrstuhl für Mikrobiologie (Archaeenzentrum) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jul 2022 07:35 |
| Last Modified: | 06 Jul 2022 07:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45770 |
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