Work

Performance of CeO2-Z/O3 catalytic oxidation system for pre-treatment of wastewater containing organic peroxides

Year: 2026

Type: article

Abstract: This study aims to optimize the preparation conditions of CeO 2 -zeolite (CeO 2 -Z) catalyst and its application in the CeO 2 -Z/O 3 catalytic oxidation system for pretreatment of wastewater containing organic peroxides. Through the response surface experiment method, the single-factor influence degree and interactive influence degree of the concentration of Ce 3+ , exchange duration, and exchange number of the preparation catalyst CeO 2 -Z, as well as the optimization of these preparation conditions, were analyzed. The experimental results indicate that the optimal preparation conditions for the CeO 2 -Z catalyst are a Ce 3+ concentration of 0.25 mol/L, a water bath duration of 16 h, and an impregnation number of 2. The catalyst prepared under these conditions exhibited excellent performance and had low economic cost. When the catalyst is applied to the pretreatment of ozone-catalyzed oxidation wastewater containing organic peroxide, the removal efficiencies of chemical oxygen demand (COD) and Ultraviolet absorbance at 254 nm (UV 254 ) are 33.42% and 23.81%, which shows that the removal effect is good. The CeO 2 -Z catalyst was characterized by X-ray diffraction (XRD) and energy-dispersive spectroscopy (EDS), and the results showed that CeO 2 was successfully attached to the zeolite. The five-day biological oxygen demand (BOD 5 ) and COD ratio (B/C) of the wastewater treated with CeO 2 -Z/O 3 catalytic system pre-treatment increased from 0.093 to 0.105 to 0.154–0.158, indicating that the CeO 2 -Z catalyst can significantly improve the biodegradability of the wastewater. In conclusion, the CeO 2 -Z catalyst shows great promise for application in the ozone catalytic oxidation pretreatment of wastewater containing organic peroxides due to its straightforward preparation process and exceptional performance.

Source: Applied Water Science

DOI: 10.1007/s13201-026-02789-y

Authors: Zichun Yan, Shuichao Fan, Weibin Zhang, Mingxia Yang

Language: English

Topic: Advanced oxidation water treatment

Subfield: Water Science and Technology

Field: Environmental Science

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,490

Funders: Innovative Research Group Project of the National Natural Science Foundation of China, National Natural Science Foundation of China