Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1002/lol2.10253
Licence creative commons licence
Title (Primary) Microbial iron reduction does not release microplastics from organo-metallic aggregates
Author Leiser, R.; Wendt-Potthoff, K. ORCID logo
Source Titel Limnology and Oceanography Letters
Year 2022
Department SEEFO
Volume 7
Issue 3
Page From 244
Page To 250
Language englisch
Topic T5 Future Landscapes
Data and Software links https://doi.org/10.48758/ufz.11330
Supplements https://aslopubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1002%2Flol2.10253&file=lol210253-sup-0001-Supinfo.docx
UFZ wide themes Microplastics;
Abstract Iron flocculants play a major role in the remediation of water bodies, removing particulate pollutants such as microplastics through floc formation. Such flocs are prone to microbial iron reduction while lying on top of anoxic sediments, which possibly leads the release of bound microplastics. In this study, Shewanella oneidensis was employed to simulate the impact of microbial iron reduction on the release of polyethylene spheres from sunken flocs in 120 d batch experiments. Most of the flocs iron (oxyhydr)oxides were reduced (70–90%), but this did not affect their integrity. Only a negligible proportion (0.2–2.7%) of polyethylene spheres was released, while the majority remained bound inside the floc matrix. This study exemplifies that flocs are quite stable, even when experiencing microbial iron reduction under anoxic conditions. Thereby incorporation into such aggregates may display a potential mode of long-term microplastics storage in freshwater sediments.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=25926
Leiser, R., Wendt-Potthoff, K. (2022):
Microbial iron reduction does not release microplastics from organo-metallic aggregates
Limnol. Oceanogr. Lett. 7 (3), 244 - 250 10.1002/lol2.10253