Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1016/j.jhazmat.2023.131066
Title (Primary) Advanced oxidation processes for removal of monocyclic aromatic hydrocarbon from water: Effects of O3/H2O2 and UV/H2O2 treatment on product formation and biological post-treatment
Author Bein, E.; Seiwert, B.; Reemtsma, T.; Drewes, J.E.; Hübner, U.
Source Titel Journal of Hazardous Materials
Year 2023
Department ANA
Volume 450
Page From art. 131066
Language englisch
Topic T9 Healthy Planet
Abstract Several oxidative treatment technologies, such as ozonation or Fenton reaction, have been studied and applied to remove monocyclic hydroaromatic carbon from water. Despite decades of application, little seems to be known about formation of transformation products while employing different ozone- or OH-based treatment methods and their fate in biodegradation. In this study, we demonstrate that O3/H2O2 treatment of benzene, toluene, ethylbenzene (BTE), and benzoic acid (BA) leads to less hydroxylated aromatic transformation products compared to UV/H2O2 as reference system – this at a similar OH exposure and parent compound removal efficiency. Aerobic biodegradation tests after oxidation of 0.15 mM BA (12.6 mg C L−1 theoretical DOC) revealed that a less biodegradable DOC fraction > 4 mg C L−1 was formed in both oxidative treatments compared to the BA control. No advantage of ozonation over UV/H2O2 treatment was observed in terms of mineralization capabilities, however, we detected less transformation products after oxidation and biodegradation using high-resolution mass spectrometry. Biodegradation of BA that was not oxidized was more complete with minimal organic residual. Overall, the study provides new insights into the oxidation of monocyclic aromatics and raises questions regarding the biodegradability of oxidation products, which is relevant for several treatment applications.
Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=24533
Bein, E., Seiwert, B., Reemtsma, T., Drewes, J.E., Hübner, U. (2023):
Advanced oxidation processes for removal of monocyclic aromatic hydrocarbon from water: Effects of O3/H2O2 and UV/H2O2 treatment on product formation and biological post-treatment
J. Hazard. Mater. 450 , art. 131066 10.1016/j.jhazmat.2023.131066