Chemical Industry and Engineering Progress ›› 2025, Vol. 44 ›› Issue (12): 7270-7280.DOI: 10.16085/j.issn.1000-6613.2024-1988

• Resources and environmental engineering • Previous Articles    

Preparation of Fe/C catalyst from cold-rolled sludge for catalytic degradation of phenol

TANG Yan1,2,3,4(), ZHONG Guanghong1,2,3,4, LI Xitong5, GAO Xiaoya1,2,3,4, ZHU Wenjie1,2,3,4(), LUO Yongming2,3,4   

  1. 1.School of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China
    2.Volatile organic compounds pollution prevention and recycling provincial innovation team in Kunming University of Science and Technology, Kunming 650500, Yunnan, China
    3.Key Laboratory of Odor Volatile Organic Compounds Control in Universities in Yunnan Province, Kunming 650500, Yunnan, China
    4.Key Laboratory of Yunnan Province for Synthesizing Sulfur-containing Fine Chemical, Kunming 650500, Yunnan, China
    5.School of Energy and Environment, Yunnan Normal University，Kunming 650500, Yunnan, China
  • Received:2024-12-05 Revised:2025-03-11 Online:2026-01-06 Published:2025-12-25
  • Contact: ZHU Wenjie

冷轧污泥制备Fe/C催化剂催化降解苯酚

唐燕1,2,3,4(), 钟广宏1,2,3,4, 李曦同5, 高晓亚1,2,3,4, 朱文杰1,2,3,4(), 罗永明2,3,4   

  1. 1.昆明理工大学环境科学与工程学院，云南 昆明 650500
    2.昆明理工大学挥发性有机物污染防治与资源化创新团队，云南 昆明 650500
    3.云南省高校恶臭挥发性有机物控制重点实验室，云南 昆明 650500
    4.云南省含硫 精细化工重点实验室，云南 昆明 650500
    5.云南师范大学能源与环境学院，云南 昆明 650500
  • 通讯作者: 朱文杰
  • 作者简介:唐燕（1996—），女，硕士研究生，研究方向为高级氧化降解水体有机污染物。E-mail：1725183997@qq.com。

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Abstract:

A series of Fe/C catalysts were synthesized from cold-rolled sludge using an ammonia pretreatment-pyrolysis method. The physicochemical properties of these catalysts were characterized by X-ray diffraction, porosity measurement, Fourier transfrom infrared spectroscopy, Raman spectroscopy, and scanning electron microscope to evaluate their performance in degrading phenol via activated peroxodisulfate at different pyrolysis temperatures. The Fe/C catalyst prepared at 600℃ (NFC-600) demonstrated superior catalytic performance, achieving complete phenol removal within 30 minutes. The degradation kinetics of phenol followed a quasi-first-order model. The phenol degradation efficiencies ranged from 81.4%—100% after 30 minutes of reaction at pH between 3—10, with all samples reaching 100% degradation after 60 minutes. The primary active sites in NFC-600 were identified as C̿    O groups, defects, and Fe3O4. The degradation pathway involved initial oxidation of phenol to quinone via free radical reactions or electron transfer, followed by ring-opening reactions and C̿    C bond breaking to form small-molecule acids, which were ultimately mineralized to H2O and CO2. The results indicated that NFC-600 exhibited excellent catalytic performance and pH adaptability, providing an effective pathway for the resource utilization of cold-rolling sludge and the degradation of phenolic wastewater.

Key words: cold-rolled sludge, Fe/C catalyst, phenol, peroxydisulfate, resourceful utilization

摘要：

以冷轧污泥为原材料，采用氨水预处理-热解法制备得到系列Fe/C催化剂，通过X射线衍射、比表面积分析、傅里叶变换红外光谱、Raman光谱和扫描电子显微镜对催化剂的物理化学性质进行分析，探究不同热解温度下Fe/C催化剂活化过二硫酸盐对苯酚的降解性能，其中600℃下制备的Fe/C催化剂（NFC-600）30min可完全去除苯酚，苯酚的降解符合准一级动力学模型。当pH为3~10时，反应30min后苯酚降解率为81.4%~100%，60min后均达到100%。阐明了NFC-600的主要活性位点为C̿    O、缺陷和Fe3O4。揭示了降解路径，苯酚首先经过自由基反应或者电子转移生成酚类物质，继而被氧化为醌类，再经过开环反应和C̿    C键断裂生成小分子酸，最后矿化为H2O和CO2。实验结果表明，NFC-600具有良好的催化性能和优异的pH适用性，该研究为冷轧污泥资源化利用和酚类废水降解提供了有效路径。

关键词: 冷轧污泥, Fe/C催化剂, 苯酚, 过二硫酸盐, 资源化利用

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