摘要
本文考察了H_(2)O_(2)、HCO_(3)^(-)、Mn^(2+)初始浓度、pH对Mn^(2+)活化HCO_(3)^(-)/H_(2)O_(2)(BAP)体系降解水中磺胺甲噁唑效能的影响,通过自由基淬灭实验和EPR分析,揭示了锰离子活化BAP系统中磺胺甲噁唑的降解机理。实验结果表明,羟基自由基(·OH)、碳酸根自由基(CO_(3)^(·-))、超氧自由基(O_(2)^(·-))、单线态氧(1O_(2))都参与了降解过程,它们通过攻击磺胺甲噁唑的分子结构,使其逐步分解并最终矿化为无毒的小分子物质。本研究不仅为磺胺甲噁唑等难降解有机污染物的处理提供了新的思路和方法,同时也使绿色、可持续的BAP高级氧化技术的应用成为可能。未来研究将进一步优化锰离子活化BAP系统的性能,探索其在实际水处理工程中的应用前景,并评估其环境效益和经济可行性。
The effects of initial concentrations of H_(2)O_(2),HCO_(3)^(-),Mn^(2+)and pH on the degradation of sulfamethoxazole in water in the Mn^(2+)activated HCO_(3)^(-)/H_(2)O_(2)(BAP)system were investigated in this paper.The radical quenching experiment and EPR analysis revealed the degradation mechanism of sulfamethoxazole in the manganese activated BAP system.The experimental results showed that hydroxyl radical(·OH),carbonate radical(CO_(3)^(·-)),superoxide radical(O_(2)^(·-))and singlet oxygen(^(1)O_(2))all participated in the degradation process.By attacking the molecular structure of sulfamethoxazole,they gradually decomposed and finally mineralized into non-toxic small molecule substances.This study not only provides a new idea and method for the treatment of refractory organic pollutants such as sulfamethoxazole,but also makes the application of green and sustainable advanced oxidation technology of BAP possible.Future studies will further optimize the performance of the Manganese-activated BAP system,explore its application prospects in practical water treatment projects,and evaluate its environmental benefits and economic feasibility.
作者
刘强
吴云
姜成春
LIU Qiang;WU Yun;JIANG Chengchun(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang 110168,China;School of Materials and Environmental Engineering,Shenzhen Polytechnic University,Shenzhen 518055,China)
出处
《水处理技术》
北大核心
2025年第9期29-34,40,共7页
Technology of Water Treatment
基金
国家自然科学基金(52170007)
深圳职业技术大学研究基金(6023310040K)。
关键词
高级氧化
过氧化氢
抗生素
碳酸氢钠
advanced oxidation
hydrogen peroxide
antibiotics
sodium bicarbonate
