Catalytic ozonation of dye wastewater using Fe-Ce@γ-Al2O3 catalyst

IF 6.7 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-09-11 DOI:10.1016/j.jwpe.2025.108707

Xiao Wang , Wenyan Yuan , Xiao Ye , Dexu Cheng , Xiaoyin Niu , Xuedong Feng , Yanfei Ma

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引用次数: 0

Abstract

Organic heterocyclic dyes have seen increased use as sectors, including textiles, rubber, paper, plastics, and cosmetics have grown in size. Rhodamine B (Rh B), a common organic heterocyclic dye, is a substantial environmental risk due to its complicated structure and great resistance to degradation. In this study, a Fe-Ce@γ-Al2O3 (FCAL) catalyst was synthesized using an impregnation-calcination method and applied to the catalytic ozonation degradation of Rh B. The preparation conditions of the catalyst were optimized, and the catalyst was characterized by SEM, XRD, FTIR, BET, and XPS. The effects of ozone flow rate, catalyst dosage, initial Rh B concentration, and initial pH on Rh B removal were optimized using the RSM. The results suggested the quadratic polynomial equation obtained possessed a high reliability, and the maximum predicted Rh B removal rate reached 99.81 %, which was consistent with the experimental Rh B removal rate (100 %). The FCAL catalyst maintained high activity after 5 repeated uses, with a Rh B removal rate of 96.82 %. Through electron transfer, the Fe³⁺/Fe²⁺ and Ce⁴⁺/Ce³⁺ redox couples create OVs, which facilitate the adsorption and breakdown of O₃ into reactive oxygen species (ROS). This process ultimately breaks down Rh B to H₂O, CO₂, and some organic molecules. This study provides an innovative method and theoretical foundation for treating wastewater containing organic dyes.

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Fe-Ce@γ-Al2O3催化剂催化臭氧氧化染料废水

随着纺织、橡胶、造纸、塑料和化妆品等行业规模的扩大，有机杂环染料的使用量也在增加。罗丹明B （Rhodamine B, Rh B）是一种常见的有机杂环染料，由于其结构复杂，不易降解，具有很大的环境风险。本研究采用浸渍-煅烧法合成了Fe-Ce@γ-Al2O3 （FCAL）催化剂，并将其应用于催化臭氧氧化降解Rh b。对催化剂的制备条件进行了优化，并用SEM、XRD、FTIR、BET和XPS对催化剂进行了表征。利用RSM优化了臭氧流量、催化剂用量、初始Rh B浓度和初始pH对Rh B去除率的影响。结果表明，所得到的二次多项式方程具有较高的可靠性，预测的最大Rh B去除率达到99.81%，与实验的Rh B去除率（100%）一致。FCAL催化剂经5次重复使用后仍保持较高的活性，Rh B去除率达96.82%。Fe3+/Fe2+和Ce4+/Ce3+氧化还原对通过电子转移产生OVs， OVs有利于O3的吸附和分解成活性氧（ROS）。这个过程最终将Rh B分解成H2O、CO2和一些有机分子。本研究为处理含有机染料废水提供了一种创新方法和理论基础。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies