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Journal of Shanghai University（Natural Science Edition） ›› 2025, Vol. 31 ›› Issue (2): 252-263.doi: 10.12066/j.issn.1007-2861.2637

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Oxytetracycline removal from aqueous solution using a hydroxyl radical filtrate containing highly active aluminum ions

WANG Xinyan, GUO Xiaohan, MA Genwang, GAI Weizhuo, DENG Zhenyan   

  1. 1. College of Sciences, Shanghai University, Shanghai 200444, China; 2. College of Physics & Electronic Information, Luoyang Normal University,Luoyang 471934, Henan, China
  • Received:2024-06-29 Online:2025-04-30 Published:2025-05-09

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Abstract: Advanced oxidation processes (AOPs) are widely used to degrade organic pollutants in aqueous solutions due to their ability to generate highly reactive radicals. However, the traditional Fenton reaction is limited by its required pH range of 2.8∼3.5 and the formation of Fe sludge. This study presents a hydroxyl radical filtrate containing highly active aluminum ions, prepared by filtering the reaction suspension of an Al+acid+H2O2 system. The filtrate effectively degraded oxytetracycline (OTC) in aqueous solution. The effects of Al dosage, reaction time, H2O2 concentration, and pH of filtrate preparation on oxytetracycline degradation efficiency were systematically investigated. Additionally, the mechanism underlying hydroxyl radical generation in the filtrate was analyzed.

Key words: high-activity aluminum ions, advanced oxidation processes, hydroxyl radicals, oxytetracycline, degradation

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