Quantifying the Mineralization of C-13-Labeled Cations and Anions Reveals Differences in Microbial Biodegradation of Herbicidal Ionic Liquids between Water and Soil

Wiktoria Wilms, Marta Wozniak-Karczewska, Michal Niemczak, Piotr Lisiecki, Agnieszka Zgola-Grzeskowiak, Lukasz Lawniczak, Grzegorz Framski, Juliusz Pernak, Mikolaj Owsianiak, Carsten Vogt, Anko Fischer, Robin D. Rogers, Lukasz Chrzanowski

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Characterization of the biodegradability of herbicidal ionic liquids (HILs) using the industry standard activated sludge methodology is thought to be insufficient to fully understand the biodegradation of HILs in the environment because cations and anions of the HILs may have different potential for biodegradation in aquatic and terrestrial systems. To test this hypothesis, we conducted laboratory microcosm experiments using C-13-labeled cations and anions forming benzyldodecyldimethylammonium 4-chloro-2-methylphenoxyacetate ([C-12-BA][MCPA]) and evaluated their biodegradation potential in soil with a known history of herbicide exposure, and in water (mineral medium) augmented with microorganisms present in activated sludge. The biodegradability of the cation and anion was found to depend on the test system (water or soil). The cation was mineralized in water, whereas the anion was fully utilized in soil. These results suggest that performing biodegradation tests using differently C-13-labeled species of the target HIL and mimicking various environmental compartments (e.g., soil, activated sludge) is needed to provide a better understanding of the fate of HILs in the environment. They also indicate that biodegradation kinetic parameters of HILs derived from experiments performed in aqueous systems should not be used to estimate biodegradation rates in terrestrial environments.
Original languageEnglish
JournalACS Sustainable Chemistry and Engineering
Volume8
Issue number8
Pages (from-to)3412-3426
ISSN2168-0485
DOIs
Publication statusPublished - 2020

Cite this

Wilms, W., Wozniak-Karczewska, M., Niemczak, M., Lisiecki, P., Zgola-Grzeskowiak, A., Lawniczak, L., Framski, G., Pernak, J., Owsianiak, M., Vogt, C., Fischer, A., Rogers, R. D., & Chrzanowski, L. (2020). Quantifying the Mineralization of C-13-Labeled Cations and Anions Reveals Differences in Microbial Biodegradation of Herbicidal Ionic Liquids between Water and Soil. ACS Sustainable Chemistry and Engineering, 8(8), 3412-3426. https://doi.org/10.1021/acssuschemeng.9b07598