铜镁尖晶石活化过氧乙酸去除水中双酚A  

Removal of bisphenol A from water by peracetic acid activated by copper-magnesium spinel

作　　者：代鑫 刘邦海 高璐瑶 江奇志 金春姬[1] DAI Xin;LIU Banghai;GAO Luyao;JIANG Qizhi;JIN Chunji(College of Environmental Science and Engineering,Ocean University of China,Qingdao 266100,China;School of Environmental and Civil Engineering,Jiangnan University,Wuxi 214122,China;CNOOC Petrochemical Engineering Co.,Ltd.,Qingdao 266100,China)

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]江南大学环境与土木工程学院,江苏无锡214122 [3]中海油石化工程有限公司,山东青岛266100

出　　处：《工业水处理》2025年第4期139-147,共9页Industrial Water Treatment

摘　　要：为高效去除水中双酚A(BPA),采用溶胶-凝胶法制备了尖晶石材料Mg Cu_(2)O_(4)用于活化过氧乙酸(PAA),构建Mg Cu_(2)O_(4)/PAA高级氧化体系降解BPA。采用SEM、XPS、XRD、BET对Mg Cu_(2)O_(4)的形貌和微观结构进行表征,研究p H、PAA投加量、Mg Cu_(2)O_(4)投加量、水中常见阴离子和腐殖酸对Mg Cu_(2)O_(4)/PAA体系降解BPA的影响,并对Mg Cu_(2)O_(4)活化PAA的机制进行研究。结果表明:Mg Cu_(2)O_(4)被成功制备,材料比表面积达到63.4727 m^(2)/g。在初始BPA浓度为10μmol/L,p H为7,Mg Cu_(2)O_(4)投加量为0.2 g/L,PAA投加量为0.3 mmol/L时,体系11 min即可完全降解BPA,Mg Cu_(2)O_(4)在p H为4~10的范围内均表现出对BPA的高效降解。阴离子和腐殖酸对Mg Cu_(2)O_(4)/PAA体系的降解速率有不同程度的抑制作用。自由基猝灭实验、ESR和XPS分析共同揭示了Mg Cu_(2)O_(4)/PAA体系对BPA的降解存在自由基途径和非自由基途径,其中非自由基途径的~1O_2是体系的主要活性物质,自由基途径的CH_3C(O)OO·也有较大贡献。经过4次回收重复实验,Mg Cu_(2)O_(4)/PAA的BPA降解率可达87.39%,表明尖晶石Mg Cu_(2)O_(4)具有较好的重复利用性。Spinel material MgCu_(2)O_(4)was prepared by sol-gel to activate peracetic acid(PAA)for efficiently remove bisphenol A(BPA)from water.The MgCu_(2)O_(4)/PAA advanced oxidation system was constructed to degrade BPA.The morphology and microstructure of MgCu_(2)O_(4)were characterized by SEM,XPS,XRD and BET.The effects of pH,dos-age of peracetic acid,dosage of MgCu_(2)O_(4),common anion in water and humic acid on the degradation of bisphenol A in MgCu_(2)O_(4)/PAA system were studied,and the mechanism of MgCu_(2)O_(4)activating PAA was also investigated.The re-sults showed that MgCu_(2)O_(4)had been successfully prepared with a specific surface area of 63.4727 m^(2)/g.When the initial BPA concentration was 10µmol/L,pH was 7,MgCu_(2)O_(4)dosage was 0.2 g/L,and PAA dosage was 0.3 mmol/L,the system could completely degrade BPA in 11 min.MgCu_(2)O_(4)showed high efficiency in the degradation of BPA in the pH range of 4-10.Anion and humic acid could inhibit the degradation rate of MgCu_(2)O_(4)/PAA system to different degrees.Free radical quenching experiment,ESR and XPS analysis jointly revealed that there were free radical and non-free radical pathways for the degradation of bisphenol A by MgCu_(2)O_(4)/PAA system,among which 1O2 in the non-free radical pathway was the main active substance in the system,and CH3C(O)OO·in the free radical pathway also made a significant contribution.The BPA degradation rate of MgCu_(2)O_(4)/PAA could reach 87.39%after four recycling experiments,which indicated that spinel MgCu_(2)O_(4)had a good reuse ability.

关 键 词：双金属催化剂 尖晶石 过氧乙酸 双酚A 催化降解 

分 类 号：X703.1[环境科学与工程—环境工程]