Mechanism and toxicity evaluation of catalytic ozonation over Cu/Ce-Al₂O₃ system aiming at degradation of humic acid in real wastewater.

ABSTRACT: Humic acid (HA) is the main component of organic matter in effluent from wastewater treatment. The effective removal of HA is significant. In this study, a novel catalyst was prepared using a transition metal oxide as the active component and Al₂O₃ as a granular carrier. The mechanism of catalytic ozonation of HA under neutral pH conditions and its efficiency were investigated. Under the chosen conditions (an ozone concentration of 2.2 mg/L, 50 mg/L HA solution, catalyst dosage of 5 g/L and initial pH of 6.49), the Cu/Ce-Al₂O₃ bimetallic catalyst led to 54.79% TOC removal rate after 30 min; the removal rate by ozone alone was only 20.49%. The characteristics of organic compounds determined by FT-IR and GC-MS showed that organic compounds were deg

SUBMITTER: Tang X 

PROVIDER: S-EPMC8062596 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature