Magnetic particles (MPs) coated with humic acid (HA) prepared under anoxic atmosphere were tested as heterogeneous photo-Fenton catalyst for the activation of hydrogen peroxide (H₂O₂) and persulfate (S₂O₈²⁻) using Bisphenol A (BPA) as a model pollutant. The role of HA coating, pH value and H₂O₂/S₂O₈²⁻ concentration were investigated. A positive contribution of HA coating on H₂O₂ and S₂O₈²⁻ activation was found. The highest BPA degradation rates were achieved at acidic conditions (pH 3) with both H₂O₂ and S₂O₈²⁻, however persulfate showed a significant efficiency even at pH 6, interesting feature in the light of decreasing the wastewater treatment costs. By the addition of selective quenching agents, OH and SO₄– were identified as the main reactive species involved in the BPA abatement. An important contribution of the S₂O₈²⁻ photolysis on the overall BPA transformation was highlighted. The reuse of the catalyst was investigated and similar efficiency using H₂O₂ and S₂O₈²⁻ activation was observed until the third catalytic cycle. Experiments carried out using real wastewater samples, showed a good, even if less efficient compared to pure water, BPA removal.

将在缺氧气氛下制备的涂覆有腐殖酸（HA）的磁性颗粒（MPs）作为非均相光芬顿催化剂进行了测试，以使用双酚A（A ₂）活化过氧化氢（H ₂ O ₂）和过硫酸盐（S ₂ O ₈ ^2-）。 BPA）作为模型污染物。研究了HA涂层，pH值和H ₂ O ₂ / S ₂ O ₈ ^2-浓度的作用。HA涂层对H ₂ O ₂和S ₂ O ₈ ^2-的积极贡献发现激活。H ₂ O ₂和S ₂ O ₈ ^2-均在酸性条件下（pH 3）达到了最高的BPA降解速率，但是过硫酸盐即使在pH 6时也显示出显着的效率，这是考虑到废水处理成本降低的有趣特征。 。通过添加选择性淬灭剂，OH和SO ₄ –被确定为减少BPA的主要反应性物质。突出了S ₂ O ₈ ^2-光解对整个BPA转化的重要贡献。对催化剂的再利用进行了研究，并使用H ₂ O ₂达到了类似的效率观察到S ₂ O ₈ ^2-活化直至第三催化循环。使用实际废水样品进行的实验显示，与纯水相比，BPA去除效果好，即使效率不高。