Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1021/acs.est.2c07574 |
| Document | accepted manuscript |
| Title (Primary) | Combining Geobacter spp. dominated biofilms and anaerobic digestion effluents─The effect of effluent composition and electrode potential on biofilm activity and stability |
| Author | Dzofou Ngoumelah, D.; Kuchenbuch, A.; Harnisch, F.
; Kretzschmar, J. |
| Source Titel | Environmental Science & Technology |
| Year | 2023 |
| Department | UMB |
| Volume | 57 |
| Issue | 6 |
| Page From | 2584 |
| Page To | 2594 |
| Language | englisch |
| Topic | T7 Bioeconomy |
| Supplements | https://pubs.acs.org/doi/suppl/10.1021/acs.est.2c07574/suppl_file/es2c07574_si_001.pdf |
| Keywords | Biofilms; Electrodes; Filtration; Organic compounds; Peptides and proteins |
| Abstract | The combination of anaerobic digestion (AD) and microbial electrochemical technologies (METs) offers different opportunities to increase the efficiency and sustainability of AD processes. However, methanogenic archaea and/or particles may partially hinder combining MET and AD processes. Furthermore, it is unclear if the applied anode potential affects the activity and efficiency of electroactive microorganisms in AD-MET combinations as it is described for more controlled experimental conditions. In this study, we confirm that 6-week-old Geobacter spp. dominated biofilms are by far more active and stable in AD-effluents than 3-week-old Geobacter spp. dominated biofilms. Furthermore, we show that the biofilms are twice as active at −0.2 V compared to 0.4 V, even under challenging conditions occurring in AD-MET systems. Paired-end amplicon sequencing at the DNA level using 16S-rRNA and mcrA gene shows that hydrogenotrophic methanogens incorporate into biofilms immersed in AD-effluent without any negative effect on biofilm stability and electrochemical activity. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24987 |
| Dzofou Ngoumelah, D., Kuchenbuch, A., Harnisch, F., Kretzschmar, J. (2023): Combining Geobacter spp. dominated biofilms and anaerobic digestion effluents─The effect of effluent composition and electrode potential on biofilm activity and stability Environ. Sci. Technol. 57 (6), 2584 - 2594 10.1021/acs.est.2c07574 |
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