应用化学 ›› 2025, Vol. 42 ›› Issue (3): 330-344.DOI: 10.19894/j.issn.1000-0518.240236

• 研究论文 • 上一篇    下一篇

硅铝基负载金属催化臭氧氧化焦化废水有机物效能对比

刘文佳1,3, 杨梦鑫2,3, 王亚静2,3, 刘艳芳2,3(), 张妙雨2,3, 熊奕衡2   

  1. 1.河北科技大学建筑工程学院,石家庄 050018
    2.河北科技大学环境科学与工程学院,石家庄 050018
    3.河北省污染防治生物技术重点实验室,石家庄 050018
  • 收稿日期:2024-07-29 接受日期:2025-02-13 出版日期:2025-03-01 发布日期:2025-04-11
  • 通讯作者: 刘艳芳
  • 基金资助:
    河北省重点研发项目(19273601D);资助

Comparison of the Efficacy of Silica-Alumina-Based Metal-Loaded Catalytic Ozone Oxidation of Organic Matter in Coking Wastewater

Wen-Jia LIU1,3, Meng-Xin YANG2,3, Ya-Jing WANG2,3, Yan-Fang LIU2,3(), Miao-Yu ZHANG2,3, Yi-Heng XIONG2   

  1. 1.Hebei University of Science and Technology,School of Civil Engineering,Shijiazhuang 050018,China
    2.Hebei University of Science and Technology,College of Environmental Sciences and Engineering,Shijiazhuang 050018,China
    3.Hebei Key Laboratory of Pollution Prevention Biotechnology,Hebei Province,Shijiazhuang 050018,China
  • Received:2024-07-29 Accepted:2025-02-13 Published:2025-03-01 Online:2025-04-11
  • Contact: Yan-Fang LIU
  • About author:lyftry@126.com
  • Supported by:
    Hebei Province Key Research and Development Plan Project(19273601D)

摘要:

采用浸渍法分别制备了以硅铝基为载体的铁、铜和钛金属氧化物负载型催化剂,催化臭氧氧化处理焦化废水生化出水(BTCW),考察其对废水中典型有机物(苯酚、喹啉和乙二醇)的降解效果,并分析有机物降解机制。 结果表明,硅铝基负载铁催化剂(Fe@SA)催化性能最佳,对苯酚废水、喹啉废水和乙二醇废水(初始质量浓度均为200 mg/L),Fe@SA催化臭氧氧化体系中化学需氧量(Chemical oxygen demand,COD)的去除率(η)分别为84.56%、39.38%和17.40%,较单独臭氧氧化体系分别提高了5%、6.36%和10.06%; 总有机碳(Total organic carbon,TOC)的η分别为85.38%、15.07%和79.98%,较单独臭氧氧化体系分别提高了40.48%、15.07%和79.98%。 Fe@SA催化臭氧氧化体系对苯酚、喹啉和乙二醇的η分别为99.99%、72.79%和99.79%。 实际BTCW结果表明,Fe@SA催化臭氧氧化体系对COD和TOC的η分别达到48.40%和52.87%。稳定性测试表明,Fe@SA在重复使用5次后仍保持较高的催化活性,COD和TOC的η的下降幅度均不大于2%。 通过表征分析得到Fe@SA催化机理主要依赖于铁离子不同价态的电子转移及其对·OH产生的促进作用。 研究结果为高效催化剂的开发及焦化废水的深度处理提供了理论与技术支持。

关键词: 焦化废水, 催化臭氧氧化, 负载型催化剂

Abstract:

Iron, copper, and titanium metal oxide-loaded catalysts, with a silica-aluminum base as the carrier, were prepared using the impregnation method to catalyze the ozonation treatment of biochemical effluent from coking wastewater (BTCW). The degradation of typical organic compounds (phenol, quinoline, and ethylene glycol) in the wastewater and the corresponding degradation mechanisms were investigated. The results showed that the silica-alumina-supported iron catalyst (Fe@SA) exhibited the best catalytic performance. For phenol, quinoline, and ethylene glycol wastewaters (initial concentration of 200 mg/L), the Chemical Oxygen Demand (COD) removals in the Fe@SA catalytic ozone oxidation system were 84.56%, 39.38%, and 17.40%, respectively, which were 5%, 6.36%, and 10.06% higher than those in the ozone oxidation system alone. The Total Organic Carbon (TOC) removal rates were 85.38%, 15.07%, and 79.98%, respectively, representing improvements of 40.48%, 15.07%, and 79.98% compared to the ozone oxidation system alone. The removal efficiencies of phenol, quinoline, and ethylene glycol in the Fe@SA catalytic ozone oxidation system were 99.99%, 72.79%, and 99.79%, respectively. The results for actual BTCW showed that the Fe@SA catalytic ozone oxidation system achieved COD and TOC removal rates of 48.40% and 52.87%, respectively. Stability tests indicated that Fe@SA maintained high catalytic activity after five cycles of reuse, with COD and TOC removal rates decreasing by no more than 2%. Characterization analyses revealed that the Fe@SA primarily on electron transfer between different valence states of iron ions and its promotion of hydroxyl (—OH) generation. These findings provide theoretical and technical support for the development of efficient catalysts and the advanced treatment of coking wastewater.

Key words: Coking wastewater, Catalytic ozone oxidation, Catalyst characterization

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