Enzymatic post-treatment of ozonation: laccase-mediated removal of the by-products of acetaminophen ozonation.

ABSTRACT: Ozonation is a powerful technique to remove micropollutants from wastewater. As chemical oxidation of wastewater comes with the formation of varying, possibly persistent and toxic by-products, post-treatment of the ozonated effluent is routinely suggested. This study explored an enzymatic treatment of ozonation products using the laccase from Trametes versicolor. A high-performance liquid chromatography coupled with high-resolution mass spectrometry (HPLC-HRMS) analysis revealed that the major by-products were effectively degraded by the enzymatic post-treatment. The enzymatic removal of the by-products reduced the ecotoxicity of the ozonation effluent, as monitored by the inhibition of Aliivibrio fischeri. The ecotoxicity was more effectively reduced by enzymatic post-oxidation at pH 7 th

SUBMITTER: Schmiemann D 

PROVIDER: S-EPMC10119220 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature